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Atmospheric Pressure
 
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Atmospheric pressure plays an essential role in respiration and the function of many devices, including water pumps, syringes and drinking straws. The video explains pascals and psi and includes a demonstration revealing the presence of atmospheric pressure.
Views: 356186 ScienceOnline
Atmospheric Pressure
 
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This video explains the basic concepts of Atmospheric Pressure! To view the entire course for free, visit our website here: https://dontmemorise.com/course/index.php?categoryid=52 Don’t Memorise brings learning to life through its captivating FREE educational videos. To Know More, visit https://DontMemorise.com New videos every week. To stay updated, subscribe to our YouTube channel : http://bit.ly/DontMemoriseYouTube Register on our website to gain access to all videos and quizzes: http://bit.ly/DontMemoriseRegister Subscribe to our Newsletter: http://bit.ly/DontMemoriseNewsLetter Join us on Facebook: http://bit.ly/DontMemoriseFacebook Follow us on Twitter: https://twitter.com/dontmemorise Follow us : http://bit.ly/DontMemoriseBlog
Views: 169514 Don't Memorise
Professor Proves There Is No 14.7psi Atmospheric Pressure at Sea Level
 
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This atmospheric hoax has been going on too long and needs to come to a stop. You are being pressurized into accepting pseudoscience as real science. The so called 'Earth' is flat and the sooner you can get you head around the idea the sooner you can move on.
Views: 477 THE LIGHT IS ON
What is the average amount of air pressure in the sea level?
 
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Views: 204 Question & Answer
Physical Geography:-(वायुदाब/Air Pressure) जानिए वायुदाब क्या होता है? [Hindi]
 
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Atmospheric pressure, sometimes also calledbarometric pressure, is the pressure within the atmosphere of Earth (or that of another planet). In most circumstances atmospheric pressure is closely approximated by thehydrostatic pressure caused by the weight ofair above the measurement point. Aselevation increases, there is less overlying atmospheric mass, so that atmospheric pressure decreases with increasing elevation. Pressure measures force per unit area, with SI units of Pascals (1 pascal = 1 newton per square metre, 1 N/m2). On average, a column of air with a cross-sectional area of 1 squarecentimetre (cm2), measured from mean (average) sea level to the top of Earth's atmosphere, has a mass of about 1.03kilogram and exerts a force or "weight" of about 10.1 newtons or 2.37 lbf, resulting in a pressure at sea level of about 10.1 N/cm2 or 101 kN/m2 (101 kilopascals, kPa). A column of air with a cross-sectional area of 1 in2 (6.45 cm2) would have a mass of about 6.65 kg and a weight of about 65.4 N or 14.7 lbf, resulting in a pressure of 10.1 N/cm2 or 14.7 lbf/in2. In the United States, atmospheric pressure near sea level is commonly rounded to 15 lbf/in2, and expressed as "15 psi" (15 pounds per square inch.) https://youtu.be/_0rqRMm_Eew https://youtu.be/Ngz6wFPtKvI https://youtu.be/xUp-X0jAvCc
Views: 15320 Study Lovers
What is Sea Level?
 
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FREE FACT: An oblate spheroid is a special case of an ellipsoid where two of the semi-principal axes are the same size. A special thanks to our Subbable.com supporters: Robby Weisenfeld Gustav Delius Ike https://www.youtube.com/TheNilFacts And to Audible.com - FREE audiobook at http://www.audible.com/minutephysics MinutePhysics is on Google+ - http://bit.ly/qzEwc6 And facebook - http://facebook.com/minutephysics And twitter - @minutephysics Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute! Music by Nathaniel Schroeder http://www.soundcloud.com/drschroeder Thanks to Nima Doroud for contributions. Created by Henry Reich
Views: 3085162 minutephysics
What Is the Pressure of Earth's Atmosphere at Sea Level? : Astronomy & the Solar System
 
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Subscribe Now: http://www.youtube.com/subscription_center?add_user=ehoweducation Watch More: http://www.youtube.com/ehoweducation The pressure of Earth's atmosphere at sea level has about 20 different answers, all of which are right. Find out about the pressure of Earth's atmosphere at sea level with help from an experienced educator in this free video clip. Expert: Eylene Pirez Filmmaker: bjorn wilde Series Description: The solar system is one of the most unique and interesting topics that we as humans have the pleasure of studying. Learn about astronomy and the stars with help from an experienced educator in this free video series.
Views: 4407 eHowEducation
Atmospheric Pressure and Boiling
 
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The pressure of gas above a liquid affects the boiling point. In an open system this is called atmospheric pressure. The greater the pressure, the more energy required for liquids to boil, and the higher the boiling point. Higher Pressure = More Energy Required to Boil = Higher Boiling Point In an open system this can be visualized as air molecules colliding with the surface of the liquid and creating pressure. This pressure is transmitted throughout the liquid and makes it more difficult for bubbles to form and for boiling to take place. If the pressure is reduced, the liquid requires less energy to change to a gaseous phase, and boiling occurs at a lower temperature. See http://chemwiki.ucdavis.edu/Core/Physical_Chemistry/Physical_Properties_of_Matter/States_of_Matter/Phase_Transitions/Boiling
Views: 47878 Wayne Breslyn
Physics - Thermodynamics: (1 of 1) Air Pressure at Altitude
 
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Visit http://ilectureonline.com for more math and science lectures! In this video I will show you how to calculate the change in air pressure from the bottom to the top of a mountain.
Views: 12064 Michel van Biezen
Water Lift Atmospheric Pressure Torricelli Vacuum 10 meter potential
 
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This water is held in place with atmospheric pressure pushing on the surrounding pond water. The Maximum lift of water is about 10 meters with regular air pressure. This is how mercury barometers worked. This is a RERELEASE of the video Uploaded on Jun 4, 2011 less the cool dramatic ending with music. The music used was 100% ROYALTY FREE garageband loops/music. TWO valves can allow for lift without losing much water. Amazing Water Trick! How to Suspend Water Without a Cup!
Views: 135938 GREENPOWERSCIENCE
What is the average pressure of the atmosphere on the sea level?
 
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Views: 26 Question & Answer
What is Atmospheric Pressure in simple words? | Value of  1 atm | DiscoverPhysics
 
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What is atmospheric pressure in simple words? That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth.Atmospheric pressure is commonly measured with abarometer. ... One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury. What is the value for atmospheric pressure? The altimeter setting in aviation is an atmospheric pressure adjustment. Average sea-level pressure is 1013.25 mbar (101.325 kPa; 29.921 inHg;760.00 mmHg). What is atmospheric pressure on human body? Yes, to some extent we are also carrying a huge amount of pressure. At sea level, the atmospheric pressure is about14.7 psi. This mea What is the value for atmospheric pressure? The altimeter setting in aviation is an atmospheric pressure adjustment. Average sea-level pressure is 1013.25 mbar (101.325 kPa; 29.921 inHg;760.00 mmHg). What is atmospheric pressure in a nutshell? An atmosphere (atm) is a unit of measurement equal to the average air pressure at sea level at a temperature of 15 degrees Celsius (59 degrees Fahrenheit).One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury. Atmospheric pressure drops as altitude increases. What is atmospheric pressure on human body? Yes, to some extent we are also carrying a huge amount of pressure. At sea level, the atmospheric pressure is about14.7 psi. This means that the atmosphere is exerting 14.7 pounds of force on every square inch of our body which is really huge. What is considered low atmospheric pressure? When the air pressure drops, so does the mercury level."Atmospheric pressure can also be measured in millibars (mb), with a "bar" being roughly equivalent to one atmosphere ofpressure (one atmosphereequals 1.01325 bars). One bar is equivalent to 29.6 in. Hg.A barometer reading of 30 inches (Hg) is considered normal. Pascal's law (also Pascal's principle or the principle of transmission of fluid-pressure ) is a principle in fluid mechanics that states that pressure at a point, has infinite direction, and thus a pressure change at any point in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere. The law was established by French mathematician Blaise Pascal in 1647–48. What is the value for atmospheric pressure? Standard sea-level pressure, by definition, equals 760 mm (29.92 inches) of mercury, 14.70 pounds per square inch, 1,013.25 × 103dynes per square centimetre,1,013.25 millibars, one standard atmosphere, or 101.325 kilopascals. What is atmospheric pressure on human body? Yes, to some extent we are also carrying a huge amount of pressure. At sea level, the atmospheric pressure is about14.7 psi. This means that the atmosphere is exerting 14.7 pounds of force on every square inch of our body which is really huge. What is considered low atmospheric pressure? When the air pressure drops, so does the mercury level."Atmospheric pressure can also be measured in millibars (mb), with a "bar" being roughly equivalent to one atmosphere ofpressure (one atmosphereequals 1.01325 bars). One bar is equivalent to 29.6 in. Hg.A barometer reading of 30 inches (Hg) is considered normal. How do you calculate water pressure? Find Water Pressure of Upright Cylinder. Determine the water pressure at the bottom of a full, upright cylinder by dividing the volume by the product of pi (?) multiplied by radius squared (R^2): V = ?R^2. This gives the height. If the height is in feet, then multiply by 0.4333 to get pounds per square inch (PSI). How do you calculate hydrostatic pressure? The pressure in a liquid at a given depth is called the hydrostatic pressure. This can be calculatedusing the hydrostatic equation: P = rho * g * d, where P is thepressure, rho is the density of the liquid, g is gravity (9.8 m/s^2) and d is the depth (or height) of the liquid. Learn about what physics actually is, why it's awesome, and why you should come with me on a ride through understanding the wacky universe in which we live. ######################### DiscoverPhysics is a Collection of Best Videos of ... CREATIVE COMMONS VIDEOS (reuse allowed) FROM YOUTUBE.COM. DiscoverPhysics is an Educational Non-Profit with a Mission to expand free Education, access to Scientific Research. Your Advice & Suggestions will be much Appreciated and Welcomed. [email protected] For details please visit the following site's. https://physics.uchicago.edu/ https://en.m.wikipedia.org/wiki/Physics https://www.britannica.com/physics Will update soon. https://m.facebook.com/DiscoverPhysics https://www.quora.com/profile/Amir-Khan-2092/ https://DiscoverPhysics.business.site/ https://www.patreon.com/developers https://yahoo.com/DiscoverPhysics https://twitter.com/DiscoverPhysics http://baidu.com/DiscoverPhysics
Views: 9 DiscoverPhysics
Average Daily Sea Level Height Anomalies During El Niño
 
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This animation shows the progression of anomalous sea level heights (SLH) during the 2015-16 El Niño event. Higher than normal SLH's develop over the equatorial tropical eastern Pacific, corresponding to the area if higher sea surface temperatures. These higher heights correspond to a deeper thermocline (depth above which temperatures are more uniform) and thicker layer of warmer water which expands thus creating higher sea levels. East-west movement seen within this large region of warm water is an indication of large-scale oceanic Rossby and Kelvin waves. Many smaller scale features such as oceanic eddies are also seen in this animation. (Credit: NOAA/ESRL Physical Sciences Division) http://www.esrl.noaa.gov/psd/
Views: 280 NOAAESRL
Atmospheric pressure - Video Learning - WizScience.com
 
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"Atmospheric pressure" is the pressure exerted by the weight of air in the atmosphere of Earth . In most circumstances atmospheric pressure is closely approximated by the hydrostatic pressure caused by the weight of air above the measurement point. On a given plane, low-pressure areas have less atmospheric mass above their location, whereas high-pressure areas have more atmospheric mass above their location. Likewise, as elevation increases, there is less overlying atmospheric mass, so that atmospheric pressure decreases with increasing elevation. On average, a column of air one square centimeter in cross-section, measured from sea level to the top of the atmosphere, has a mass of about 1.03 kg and weight of about 10.1 N . Atmospheric pressure is sometimes called barometric pressure. The standard atmosphere is a unit of pressure equal to 101325 Pa or 1013.25 hectopascals or millibars. Equivalent to 760 mmHg , 29.92 inHg, 14.696 psi. The mean sea level pressure is the atmospheric pressure at sea level or the station pressure adjusted to sea level assuming that the temperature falls at a lapse rate of 6.5 K per km in the fictive layer of air between the station and sea level. This is the atmospheric pressure normally given in weather reports on radio, television, and newspapers or on the Internet. When barometers in the home are set to match the local weather reports, they measure pressure adjusted to sea level, not the actual local atmospheric pressure. Wiz Science™ is "the" learning channel for children and all ages. SUBSCRIBE TODAY Disclaimer: This video is for your information only. The author or publisher does not guarantee the accuracy of the content presented in this video. USE AT YOUR OWN RISK. Background Music: "The Place Inside" by Silent Partner (royalty-free) from YouTube Audio Library. This video uses material/images from https://en.wikipedia.org/wiki/Atmospheric+pressure, which is released under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . This video is licensed under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . To reuse/adapt the content in your own work, you must comply with the license terms.
Views: 2202 Wiz Science™
What is air pressure?
 
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Views: 1540 Question & Answer
The atmosphere of the sea wind storm formation?
 
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Sea level anomalies from satellite altimetry
 
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This shows the difference from time average of sea level as measured by satellite over 20 years, from 1993 to 2012. It is based on the AVISO gridded dataset, and has had tides and the direct response to atmospheric pressure (the inverse barometer response) removed. Particularly prominent is the 1997-1998 El Niño event.
Views: 323 Chris Hughes
Vapor Pressure and Boiling
 
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The molecules leaving a liquid through evaporation create an upward pressure as they collide with air molecules. This upward push is called the vapor pressure. Different substances have different vapor pressures and therefore different boiling points. This is due to differing intermolecular forces between molecules. The vapor pressure of a liquid lowers the amount of pressure exerted on the liquid by the atmosphere. As a result, liquids with high vapor pressures have lower boiling points. Vapor pressure can be increased by heating a liquid and causing more molecules to enter the atmosphere. At the point where the vapor pressure is equal to the atmospheric pressure boiling will begin. In effect, without any external pressure the liquid molecules will be able to spread out and change from a liquid to a gaseous phase. The gas, as bubbles in the liquid, will rise to the surface and be released into the atmosphere. See: http://chemwiki.ucdavis.edu/Core/Physical_Chemistry/Physical_Properties_of_Matter/States_of_Matter/Phase_Transitions/Boiling
Views: 139291 Wayne Breslyn
50 years of Sea Level Pressure Data for the US in R
 
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50 years of annually-average Sea Level Pressure (SLP) anomalies (=deviations from the long-term mean) in millibars for 16 cities in the U.S at or near the following locations. Video produced with R.
Views: 56 Jess the Geologist
Vapor Pressure Basic Introduction, Normal Boiling Point, & Clausius Clapeyron Equation - Chemistry
 
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This chemistry video tutorial provides a basic introduction into vapor pressure. Vapor pressure is the partial pressure at which a substance's rate of evaporation is equal to the rate of condensation. This tutorial explains how to calculate the vapor pressure and normal boiling point of a substance using the clausius clapeyron equation. The normal boiling point is the temperature at which the vapor pressure of the liquid is equal to the atmospheric pressure at sea level. Vapor pressure increases with temperature. The boiling point of a substance is inversely related with elevation. Substances with high intermolecular forces tend to have a high boiling point and a low vapor pressure. Intermolecular forces included in this tutorial are london dispersion forces and hydrogen bonds - a special kind of dipole dipole interaction. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/
What Is The Meaning Of The Word Air Pressure?
 
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Air pressure french meanings of word air hamariweb. Meaning, pronunciation, example sentences, and more from oxford dictionaries define air pressure (noun) get synonyms. 325 kpa define air pressure pressure exerted by air air pressure in a sentence. Air pressure french meanings of word air. Dictionary and word of the day air pressure gauge definition, meaning, english dictionary, synonym, see also 'atmospheric pressure',back pressure',barometric pressure',blood pressure', jun 1, 2011. Pressure (chemistry glossary definition) thoughtco. Air pressure dictionary definition air. May 13, 2016 this is the definition of pressure as term used in chemistry, physics, and engineering, a look at units how to calculate dictionarythe exerted by atmosphere search meaning over one hundred thousand words!. Googleusercontent searchthe force exerted by air, whether compressed or unconfined, on any surface in contact with itorigin of air pressure pressurethe definition is the onto a weight. Normal low air pressure and background noises further impact the way we taste, by repressing ability to taste sweet salty foods, according spenceair synonyms, pronunciation, translation, english dictionary definition of pressurethe force exerted mnemonicdictionary meaning a memory aid (called for word pressurepressure. Define air pressure at dictionary browse url? Q webcache. What is air pressure (noun)? Air (noun) meaning, pronunciation and more by macmillan dictionary aug 29, 2013 atmospheric the force exerted against a surface weight of on weather so eloquently put it earth does not hang in sea usually indicator dial you will also see words such as sunny, an area pushed earth's atmosphere. Atmospheric pressure simple english wikipedia, the free atmospheric meaning in cambridge dictionary. Atmospheric pressure synonyms, atmospheric antonyms air gauge definition explained youtube. Air pressure definition and meaning what is air pressure? Kids fun science. You must there are over 200,000 words in our free online dictionary, but you air pressure definition the force of pressing down on an area. Scientists use the term one atmosphere to describe pressure at sea level. Air pressure meaning definition of air by mnemonic in english (noun) and synonyms atmospheric & facts live science. Air pressure definition of air by the free dictionary. Au dictionary definition air pressure. Meaning, pronunciation, translations and examples air pressure is the weight of molecules pressing down on earth. The earth is covered in a layer of air. An example of air pressure is the average sea level 101. However atmospheric pressure meaning, definition, what is the force with which atmosphere presses down on surface of earth synonyms for at thesaurus free online thesaurus, antonyms, and definitions. French to english dictionary gives you the best and accurate french meanings of air pressure. Define air pressure at dictionary defineddefinition of by merriam webster. Air pressure dictionary definition air. Air pressure dictionary definition vocabulary.
Views: 5 slim dictionary
How Can You Breathe On An Airplane?
 
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Oxygen is sparse at high altitudes but flying in a plane couldn’t be more comfortable. Where do planes get their oxygen? Sign Up For The TestTube Newsletter Here ►►►► http://bit.ly/1myXbFG The Truth About Phones on Airplanes ►►►►http://bit.ly/1S4g9ip Read More: Oxygen Use in Aviation http://www.aopa.org/Pilot-Resources/PIC-archive/Pilot-and-Passenger-Physiology/Oxygen-Use-in-Aviation “...you have to use supplemental oxygen if you fly more than 30 minutes at cabin pressure altitudes of 12,500 feet or higher.” Outdoor Action Guide to High Altitude: Acclimatization and Illnesses https://www.princeton.edu/~oa/safety/altitude.html “The major cause of altitude illnesses is going too high too fast. Given time, your body can adapt to the decrease in oxygen molecules at a specific altitude. This process is known as acclimatization and generally takes 1-3 days at that altitude.” Development of severe hypoxaemia in chronic obstructive pulmonary disease patients at 2,438 m (8,000 ft) altitude http://erj.ersjournals.com/content/erj/15/4/635.full.pdf “Patients with lung disease are more vulnerable to low atmospheric pressure than healthy individuals.” ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos twice daily. Watch More DNews on TestTube http://testtube.com/dnews Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel DNews on Twitter http://twitter.com/dnews Trace Dominguez on Twitter https://twitter.com/tracedominguez Lissette Padilla on Twitter https://twitter.com/lizzette DNews on Facebook https://facebook.com/DiscoveryNews DNews on Google+ http://gplus.to/dnews Discovery News http://discoverynews.com Download the TestTube App: http://testu.be/1ndmmMq Sign Up For The TestTube Mailing List: http://dne.ws/1McUJdm
Views: 267539 Seeker
Manometer Pressure Problems, Introduction to Barometers - Measuring Gas & Atmospheric Pressure
 
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This chemistry video tutorial explains how to solve manometer pressure problems in addition to explaining how manometers work. It also provides an introduction into barometers which are used to measure atmospheric pressure. Manometers are used to measure the pressure of a gas by measure the height difference between the fluid based mercury columns and adding or subtracting that value from the atmospheric pressure. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/
What is air pressure in every square inch of the sea surface?
 
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Views: 95 Question & Answer
Mod-01 Lec-02 Atmosphere-A brief survey (Pressure, Temperature and Chemical composition)
 
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Introduction to Atmospheric Science by Science Prof. C. Balaji,Department of Mechanical Engineering,IIT Madras.For more details on NPTEL visit http://nptel.ac.in
Views: 4589 nptelhrd
Why don't we get crushed by atmospheric pressure? | #aumsum #kids #education #science #learn
 
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Topic: Atmospheric Pressure Why don't we get crushed by atmospheric pressure? Hey. Did you hear that? His ears popped. Is this related to atmospheric pressure? Yes. We know that our earth is surrounded by a layer of air called the atmosphere. The gravitational force of earth constantly pulls this atmosphere towards itself. Due to this, the atmosphere exerts a pressure on the surface of the earth as well as on the objects present on its surface. This pressure exerted by the atmosphere is called the atmospheric pressure. This atmospheric pressure outside our body is balanced by the air pressure present inside our body. When the atmospheric pressure decreases, it becomes less than the air pressure inside us. Now, to balance the pressure inside and outside our ears, the air present inside rushes out. Whereas, when the atmospheric pressure increases, it becomes more than the air pressure inside us. So, to balance the pressure inside and outside our ears, the outside air rushes in. This movement of air results in that sudden pop. Have you noticed this before? Has your water bottle ever got crushed once your airplane landed? This happens because of changes in the atmospheric pressure. Generally, the atmospheric pressure in the bottle is equal to that on the surface of the earth. Whereas, in an airplane the atmospheric pressure is low as compared to that on the surface of the earth. During the flight, when you open the bottle and drink some water in the airplane, the atmospheric pressure in the bottle becomes low. This is because the low pressure air present in the airplane occupies the place of water which you just drank. However, when the airplane lands and you come out of the plane, the pressure outside the bottle, that is, the atmospheric pressure on the surface of earth is high as compared to the pressure inside the bottle. Hence, the outside air exerts a greater pressure on the surface of the bottle than the inside air. As a result, the bottle gets crushed. Wow. How is he able to lift such a heavy car? Are we also powerful enough to handle such a huge amount of pressure? Yes, to some extent we are also carrying a huge amount of pressure. At sea level, the atmospheric pressure is about 14.7 psi. This means that the atmosphere is exerting 14.7 pounds of force on every square inch of our body which is really huge. So, why don't we feel this immense pressure? This is because various parts of our body such as ears, nose, lungs and stomach also contain air which exerts pressure on the atmosphere which is equal to the atmospheric pressure. In this way, the atmospheric pressure and the air pressure present inside our body cancel each other. As a result, we don't get crushed by the atmospheric pressure.
Views: 204259 It's AumSum Time
Measuring Gas Pressure and Atmospheric Pressure
 
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To see all my Chemistry videos, check out http://socratic.org/chemistry We'll learn about the amount of pressure that the air around us exerts, and we'll see how to measure pressure using a U tube barometer or a manometer with a vacuum. The units that we get are in mmH2O and mmHg. The amount of pressure changes depending on the altitude above or below sea level.
Views: 157413 Tyler DeWitt
What is air pressure in the human body?
 
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Views: 150 Question & Answer
Atmospheric pressure
 
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Atmospheric pressure Atmospheric pressure, sometimes also called barometric pressure, is the pressure exerted by the weight of air in the atmosphere of Earth or that of another planet In most circumstances atmospheric pressure is closely approximated by the hydrostatic pressure caused by the weight of air above the measurement point Low-pressure areas have less atmospheric mass above their location, whereas high-pressure areas have more atmospheric mass above their location Likewise, as elevation increases, there is less overlying atmospheric mass, so that atmospheric pressure decreases with increasing elevation On average, a column of air one square centimetre cm2 016sqin in cross-section, measured from sea level to the top of the atmosphere, has a mass of about 103 kilograms 23lb and weight of about 101 newtons 23lbf That force across one square centimeter is a pressure of 101 N/cm2 or 101,000 N/m2 A column 1 square inch 65cm2 in cross-section would have a weight of about 147lb 67kg or about 654N Contents 1 Standard atmospheric 2 Mean sea level pre Atmospheric pressure Click for more; https://www.turkaramamotoru.com/en/atmospheric-pressure-5659.html There are excerpts from wikipedia on this article and video
Views: 1 Search Engine
Atmospheric pressure
 
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Atmospheric pressure is the force per unit area exerted on a surface by the weight of air above that surface in the atmosphere of Earth (or that of another planet). In most circumstances atmospheric pressure is closely approximated by the hydrostatic pressure caused by the weight of air above the measurement point. On a given plane, low-pressure areas have less atmospheric mass above their location, whereas high-pressure areas have more atmospheric mass above their location. Likewise, as elevation increases, there is less overlying atmospheric mass, so that atmospheric pressure decreases with increasing elevation. On average, a column of air one square centimeter in cross-section, measured from sea level to the top of the atmosphere, has a mass of about 1.03 kg and weight of about 10.1 N (2.28 lbf) (A column one square inch in cross-section would have a weight of about 14.7 lbs, or about 65.4 N). This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 295 Audiopedia
Julius Sumner Miller: Lesson 10 - Atmospheric Pressure
 
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Put out your open hand - grab hold of a handful of air - there is NOTHING there! Or so it seems! But there is - there's a powerful lot of STUFF there -an enormous array of it! The ATMOSPHERE is a massive thing. The pressure of the air is about 15 pounds per square inch at sea level. On every square inch of everything there is a load of 15 pounds - very nearly. The average human being bears a load of some TWENTY TONS! The whole blanket of atmosphere which envelops the Earth weighs some 5000 million million tons! Fantastic! We show an array of enchanting DEMONSTRATIONS on THE PUSH OF THE AIR. A - We boil water in a tin can. We drive out all the air. We now stopper up the can. The water vapor in the can condenses - that is - it goes back into the liquid state. The pressure in the can is reduced. The atmosphere squeezes the can! The PUSH of the air is terrific. B - We do the same thing with another can but in this case we evacuate the can - we take out SOME of the air - with a vacuum pump. Again the great push of the air squeezes the can. C - A funnel has its open end covered with a stout rubber sheet. We take out some of the air. The atmosphere PUSHES the sheet in — the more air we take out the more it pushes in - and suddenly BANG - the sheet is burst apart by the PUSH of the air. D - "Suction" cups! This is bad language! There is NO SUCTION! We squeeze the "suction" cups together; we drive out the air between them. Then what? The atmosphere OUTSIDE pushes them together! And very strongly. E - We do the classic experiment of Otto von Guericke with the Magdeburg Hemispheres. In the original demonstration in the Public Square SIXTEEN HORSES pulled the hemispheres apart. But only eight were really necessary. See why? F - On a sheet of newspaper about 20" by 30" - that is - on an area of 600 square inches - there rests a load of atmosphere of some 9000 pounds. Fantastic! Now we wish to put this enormous load - this massive MASS - into motion by a short-lived impulsive blow. Remember the Sack of Bricks in Inertia? Newton said: "A body at rest wishes to remain at rest". And 9000 pounds - over FOUR TONS - has just too much inertia to be put into motion suddenly. So BANG! The board is broken because the great load of air does not wish to move. When the air is quiet the PUSH of the air is something to think about. Imagine what happens when this massive air is on the move - as in a hurricane or in a tornado. Cities are destroyed!
Views: 13266 Matthew Bryant
Engineering Science (Air Pressure)
 
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The definition of air pressure is the force exerted onto a surface by the weight of the air. An example of air pressure is the average sea- level air pressure of 101.325 kPA
Views: 44 PTSN Official
ATMOSPHERIC PRESSURE | INTRODUCTION | Value For Atmospheric Pressure ? DiscoverPhysics
 
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What is atmospheric pressure in simple words? That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth.Atmospheric pressure is commonly measured with abarometer. ... One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury. What is the value for atmospheric pressure? The altimeter setting in aviation is an atmospheric pressure adjustment. Average sea-level pressure is 1013.25 mbar (101.325 kPa; 29.921 inHg;760.00 mmHg). What is atmospheric pressure on human body? Yes, to some extent we are also carrying a huge amount of pressure. At sea level, the atmospheric pressure is about14.7 psi. This mea What is the value for atmospheric pressure? The altimeter setting in aviation is an atmospheric pressure adjustment. Average sea-level pressure is 1013.25 mbar (101.325 kPa; 29.921 inHg;760.00 mmHg). What is atmospheric pressure in a nutshell? An atmosphere (atm) is a unit of measurement equal to the average air pressure at sea level at a temperature of 15 degrees Celsius (59 degrees Fahrenheit).One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury. Atmospheric pressure drops as altitude increases. What is atmospheric pressure on human body? Yes, to some extent we are also carrying a huge amount of pressure. At sea level, the atmospheric pressure is about14.7 psi. This means that the atmosphere is exerting 14.7 pounds of force on every square inch of our body which is really huge. What causes atmospheric pressure? The weight of the air above you creates atmospheric pressure. Same for diving deep underwater with hydrostatic pressure.Atmospheric pressure is caused by the weight of the Earth's atmosphere. ... At higher elevations, more and more of the atmosphere is below you, so the pressure at that elevation is less. What is considered low atmospheric pressure? When the air pressure drops, so does the mercury level."Atmospheric pressure can also be measured in millibars (mb), with a "bar" being roughly equivalent to one atmosphere ofpressure (one atmosphereequals 1.01325 bars). One bar is equivalent to 29.6 in. Hg.A barometer reading of 30 inches (Hg) is considered normal. Pascal's law (also Pascal's principle or the principle of transmission of fluid-pressure ) is a principle in fluid mechanics that states that pressure at a point, has infinite direction, and thus a pressure change at any point in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere. The law was established by French mathematician Blaise Pascal in 1647–48. What is the value for atmospheric pressure? Standard sea-level pressure, by definition, equals 760 mm (29.92 inches) of mercury, 14.70 pounds per square inch, 1,013.25 × 103dynes per square centimetre,1,013.25 millibars, one standard atmosphere, or 101.325 kilopascals. What is atmospheric pressure on human body? Yes, to some extent we are also carrying a huge amount of pressure. At sea level, the atmospheric pressure is about14.7 psi. This means that the atmosphere is exerting 14.7 pounds of force on every square inch of our body which is really huge. What is considered low atmospheric pressure? When the air pressure drops, so does the mercury level."Atmospheric pressure can also be measured in millibars (mb), with a "bar" being roughly equivalent to one atmosphere ofpressure (one atmosphereequals 1.01325 bars). One bar is equivalent to 29.6 in. Hg.A barometer reading of 30 inches (Hg) is considered normal. How do you calculate water pressure? Find Water Pressure of Upright Cylinder. Determine the water pressure at the bottom of a full, upright cylinder by dividing the volume by the product of pi (?) multiplied by radius squared (R^2): V = ?R^2. This gives the height. If the height is in feet, then multiply by 0.4333 to get pounds per square inch (PSI). How do you calculate hydrostatic pressure? The pressure in a liquid at a given depth is called the hydrostatic pressure. This can be calculatedusing the hydrostatic equation: P = rho * g * d, where P is thepressure, rho is the density of the liquid, g is gravity (9.8 m/s^2) and d is the depth (or height) of the liquid. ######################### DiscoverPhysics is a Collection of Best Videos of ... CREATIVE COMMONS VIDEOS (reuse allowed) FROM YOUTUBE.COM. DiscoverPhysics is an Educational Non-Profit with a Mission to expand free Education, access to Scientific Research. Your Advice & Suggestions will be much Appreciated and Welcomed. [email protected] For details please visit the following site's. https://physics.uchicago.edu/ https://en.m.wikipedia.org/wiki/Physics https://www.britannica.com/physics Will update soon. https://m.facebook.com/DiscoverPhysics https://www.quora.com/profile/Amir-Khan-2092/ https://DiscoverPhysics.business.site/ https://w
Views: 0 DiscoverPhysics
What is Atmospheric Pressure - for kids
 
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Visit http://www.makemegenius.com for more free science videos. What is air pressure,how it helps living organisms,why air pressure is important, why we can't see atmospheric pressure....answer to these and many other questions...
Views: 125524 makemegenius
What is known as air pressure? atmospheric pressure barometric pressure | troposphere
Tutorial
 
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What is known as air pressure? Meteorologists use barometers to measure this atmospheric pressure (also called barometric pressure ). At sea level the atmospheric pressure is approximately 1 kilogram per square centimeter (14.7 pounds per square inch), which will cause a column of mercury in a mercury barometer to rise 760 millimeters (30.4 inches). Which atmospheric layer has the highest air pressure? The troposphere is the first layer above the surface and contains half of the Earth's atmosphere. Weather occurs in this layer. What is the normal range of barometric pressure? “Sunny,” for instance, can usually be found in the range of high barometric pressure — 30.2 or 30.3 inches. “Stormy,” on the other hand would be found in the range of low barometric pressure — 29.2 or lower, perhaps even on occasion below 29 inches. Is cold air high or low pressure? Since stronger high-pressuresystems contain cooler or drier air, the air mass is more dense and flows towards areas that are warm or moist, which are in the vicinity of low pressure areas in advance of their associated cold fronts. Pascal's law (also Pascal's principle or the principle of transmission of fluid-pressure ) is a principle in fluid mechanics that states that pressure at a point, has infinite direction, and thus a pressure change at any point in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere. The law was established by French mathematician Blaise Pascal in 1647–48. What is the value for atmospheric pressure? Standard sea-level pressure, by definition, equals 760 mm (29.92 inches) of mercury, 14.70 pounds per square inch, 1,013.25 × 103dynes per square centimetre,1,013.25 millibars, one standard atmosphere, or 101.325 kilopascals. What is atmospheric pressure on human body? Yes, to some extent we are also carrying a huge amount of pressure. At sea level, the atmospheric pressure is about14.7 psi. This means that the atmosphere is exerting 14.7 pounds of force on every square inch of our body which is really huge. What is considered low atmospheric pressure? When the air pressure drops, so does the mercury level."Atmospheric pressure can also be measured in millibars (mb), with a "bar" being roughly equivalent to one atmosphere ofpressure (one atmosphereequals 1.01325 bars). One bar is equivalent to 29.6 in. Hg.A barometer reading of 30 inches (Hg) is considered normal. What is called pressure? pressure. Posted by: Margaret Rouse. Pressure is an expression of force exerted on a surface per unit area. The standard unit of pressure is the pascal (Pa), equivalent to one newton per meter squared (N/m 2 or N. What are 5 units of pressure? pascalpound per square inchPapsi1 atm1.01325 ×10514.6961 Torr133.32219.337×10−31 psi6.895×103≡ 1 lbf/in2 How do you calculate the pressure? Pressure and force are related, and so you cancalculate one if you know the other by using the physics equation, P = F/A. Becausepressure is force divided by area, its meter-kilogram-second (MKS) units are newtons per square meter, or N/m2. What is a pressure in science? Pressure, in the physical sciences, the perpendicular force per unit area, or the stress at a point within a confined fluid. ... Absolutepressure of a gas or liquid is the total pressure it exerts, including the effect of atmospheric pressure. What are some examples of pressure? Examples of fluid motion because of pressure include breathing, and air currents (weather). When you breathe in, you move a diaphragm that lowers the pressure inside your lungs. Higher pressureair outside your body is sucked into the lungs to fill the gap. Sea and land breezes work similarly. How do you calculate water pressure? Find Water Pressure of Upright Cylinder. Determine the water pressure at the bottom of a full, upright cylinder by dividing the volume by the product of pi (?) multiplied by radius squared (R^2): V = ?R^2. This gives the height. If the height is in feet, then multiply by 0.4333 to get pounds per square inch (PSI). How do you calculate hydrostatic pressure? The pressure in a liquid at a given depth is called the hydrostatic pressure. This can be calculatedusing the hydrostatic equation: P = rho * g * d, where P is thepressure, rho is the density of the liquid, g is gravity (9.8 m/s^2) and d is the depth (or height) of the liquid. ######################### DiscoverPhysics is a Collection of Best Videos of ... CREATIVE COMMONS VIDEOS (reuse allowed) FROM YOUTUBE.COM. DiscoverPhysics is an Educational Non-Profit with a Mission to expand free Education, access to Scientific Research. Your Advice & Suggestions will be much Appreciated and Welcomed. [email protected] For details please visit the following site's. https://physics.uchicago.edu/ https://en.m.wikipedia.org/wiki/Physics https://www.britannica.com/physics Will update soon. h
Views: 0 DiscoverPhysics
TOPEX/JASON Sees 22-year Sea Level Rise
 
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This visualization shows total sea level change between 1992 and 2014, based on data collected from the TOPEX/Poseidon, Jason-1, and Jason-2 satellites. Blue regions are where sea level has gone down, and orange/red regions are where sea level has gone up. Since 1992, seas around the world have risen an average of nearly 3 inches. The color range for this visualization is -7 cm to +7 cm (-2.76 inches to +2.76 inches), though measured data extends above and below 7cm(2.76 inches). This particular range was chosen to highlight variations in sea level change. Download the visualization: http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=4345.
Views: 62078 NASA Climate Change
An example of air pressure is the average sea-level
 
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Views: 10 Net wild
DSAT Vs No Fly, Do You Know The Difference
 
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DSAT Vs No Fly, Do You Know The Difference Understanding the difference between D-Saturation and No Fly is very important to a diver's safety. D-Saturation is the amount of time it takes for a diver to bleed off residual nitrogen while at sea level, and No Fly is the amount of time a diver must wait prior to ascending to altitude. Even if the D-Sat time has expired it is still based off of normal atmospheric pressure at sea level and a diver must wait until 24 hrs to assure decompression sickness does not set in during ascent to altitude. http://www.youtube.com/user/LakeHickoryScuba Lake Hickory Scuba Center & Marina www.youtube.com/user/lakehickoryscuba www.lakehickoryscuba.com www.facebook.com/lakehickoryscuba www.twitter.com/lhscuba www.pinterest.com/LHSCUBAMARINA/ Instagram – Lake Hickory Scuba [email protected] 420 Taylorsville Beach Ct. Taylorsville, NC 28681 828-632-7649
Views: 577 LakeHickoryScuba
All About Hyperbaric Therapy or Hyperbaric Oxygen Therapy (HBOT)
 
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http://www.balancedhealthtoday.com/products.html "Hyperbaric chambers, used in hyperbaric therapy (HBOT), are any number of enclosures, which can be pressurized to allow a person inside to experience higher atmospheric pressures than the normal environmental pressures. For example, a treatment at an elevation of 12,000 feet above sea level using a 4 psi (1.27 ATA) can simulate a decent of ~5,843 feet to 6,157 feet above sea level. At higher elevations, the barometric pressure is lower. This decrease of pressure also decreases the oxygenation of blood, and is known as anoxia—where molecules of oxygen exert less pressure on the walls of the alveoli (Daltons Law). Hyperbaric Oxygen Therapy (HBOT) follows this law. How does hyperbaric oxygen therapy (HBOT) work? Hyperbaria - Increased atmospheric pressure as a means of increasing oxygen uptake without an enriched oxygen source Hyperoxia - Increased total oxygen content Hyperbaria is based on the concept of the relationship of gas pressure and uptake in liquids (blood, plasma and tissues). Henrys Law states that a gas is dissolved by a liquid in direct proportion to its partial pressure. For example, at sea level, atmospheric pressure is 760 mm Hg, the oxygen concentration is 21% and the bodys oxygen content or partial pressure, pO2, in blood and plasma is ~ 40 mm Hg. Red blood cells have a limitation as to how much oxygen can bind with hemoglobin. The plasma portion of the blood typically has about a 3% oxygen concentration. By placing someone in a 3 psi pressure hyperbaric environment, the increase in atmospheric pressure at sea level goes from 760 mm Hg to 915 mm Hg. This increase in gas pressure, increases the partial pressure of the oxygen gas and thus forces more oxygen to be dissolved in the plasma. This saturation of oxygen in the blood, due to the Hyperbaric Oxygen Therapy or HBOT, allows the extra oxygen to be diffused or transported to the surrounding body tissues. Thus, oxygen transport by plasma is significantly increased under hyperbaric therapy (HBOT). At three atmospheres pressure, enough oxygen can be dissolved in the plasma to support the oxygen demands of the body at rest in the Wilmington, North Carolina Greensboro, North Carolina Elizabeth, New Jersey UK, London City of Canada Bay, Australia The Hague, Netherlands Greece, Athens Grand Prairie, Texas Al Fulayyah, United Arab Emirates, Al Fulayyah, UAE Tunisia, Tunis http://www.balancedhealthtoday.com/hyperbaric-chamber.html http://www.balancedhealthtoday.com/Hyperbairc-Oxygen-Therapy-Autism.html
Views: 994 hyperbaricchamber
What is the unit of air pressure measurement?
 
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Views: 1604 Question & Answer
10 Atm Labyrinth
 
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In this context "ATM" is short for atmospheres, where 1 atmosphere is the normal pressure at sea level. It is a rating for water resistance. So 10 atmospheres means the watch can withstand 10 times the pressure at sea level without allowing water in. This is equivalent to being 100m underwater, but moving water exerts more pressure than still, so you couldn't literally dive to 100 meters with it. Swimming at the surface of a swimming pool could subject a watch to 3 atmospheres of pressure, and jumping or diving in would add more. A 10-atmosphere (or 10-bar) rating is good enough for swimming at the surface or snorkeling at a shallow depth, but not enough for SCUBA diving.
Views: 96 Thalian Demon
Hypsometric Equation |Thickness Equation | Atmospheric Pressure  at Sea Level Explanation Tutorial
 
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The hypsometric equation, also known as the thickness equation, relates an atmospheric pressure ratio to the equivalent thickness of an atmospheric layer under the assumptions of constant temperature and gravity. It is derived from the hydrostatic equation and the ideal gas law. Pascal's law (also Pascal's principle or the principle of transmission of fluid-pressure ) is a principle in fluid mechanics that states that pressure at a point, has infinite direction, and thus a pressure change at any point in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere. The law was established by French mathematician Blaise Pascal in 1647–48. What is the value for atmospheric pressure? Standard sea-level pressure, by definition, equals 760 mm (29.92 inches) of mercury, 14.70 pounds per square inch, 1,013.25 × 103dynes per square centimetre,1,013.25 millibars, one standard atmosphere, or 101.325 kilopascals. What is atmospheric pressure on human body? Yes, to some extent we are also carrying a huge amount of pressure. At sea level, the atmospheric pressure is about14.7 psi. This means that the atmosphere is exerting 14.7 pounds of force on every square inch of our body which is really huge. What is considered low atmospheric pressure? When the air pressure drops, so does the mercury level."Atmospheric pressure can also be measured in millibars (mb), with a "bar" being roughly equivalent to one atmosphere ofpressure (one atmosphereequals 1.01325 bars). One bar is equivalent to 29.6 in. Hg.A barometer reading of 30 inches (Hg) is considered normal. What is the definition of pressure in science? Pressure, in the physical sciences, the perpendicular force per unit area, or the stress at a point within a confined fluid. ... Absolute pressure of a gas or liquid is the total pressure it exerts, including the effect of atmospheric pressure. An absolute pressure of zero corresponds to empty space or a complete vacuum. What is the simple definition of pressure? Pressure means how much something is pushing on something else. It is expressed as force per unit area: P=F/A. In technology, pressure is often specified in multiples of atmospheric pressure. It can also be defined as the thrust [compressive force acting perpendicularly to the surface of a body] acting per unit area. What is called pressure? pressure. Posted by: Margaret Rouse. Pressure is an expression of force exerted on a surface per unit area. The standard unit of pressure is the pascal (Pa), equivalent to one newton per meter squared (N/m 2 or N. What are 5 units of pressure? pascalpound per square inchPapsi1 atm1.01325 ×10514.6961 Torr133.32219.337×10−31 psi6.895×103≡ 1 lbf/in2 How do you calculate the pressure? Pressure and force are related, and so you cancalculate one if you know the other by using the physics equation, P = F/A. Becausepressure is force divided by area, its meter-kilogram-second (MKS) units are newtons per square meter, or N/m2. What is a pressure in science? Pressure, in the physical sciences, the perpendicular force per unit area, or the stress at a point within a confined fluid. ... Absolutepressure of a gas or liquid is the total pressure it exerts, including the effect of atmospheric pressure. What are some examples of pressure? Examples of fluid motion because of pressure include breathing, and air currents (weather). When you breathe in, you move a diaphragm that lowers the pressure inside your lungs. Higher pressureair outside your body is sucked into the lungs to fill the gap. Sea and land breezes work similarly. How do you calculate water pressure? Find Water Pressure of Upright Cylinder. Determine the water pressure at the bottom of a full, upright cylinder by dividing the volume by the product of pi (?) multiplied by radius squared (R^2): V = ?R^2. This gives the height. If the height is in feet, then multiply by 0.4333 to get pounds per square inch (PSI). How do you calculate hydrostatic pressure? The pressure in a liquid at a given depth is called the hydrostatic pressure. This can be calculatedusing the hydrostatic equation: P = rho * g * d, where P is thepressure, rho is the density of the liquid, g is gravity (9.8 m/s^2) and d is the depth (or height) of the liquid. ######################### DiscoverPhysics is a Collection of Best Videos of ... CREATIVE COMMONS VIDEOS (reuse allowed) FROM YOUTUBE.COM. DiscoverPhysics is an Educational Non-Profit with a Mission to expand free Education, access to Scientific Research. Your Advice & Suggestions will be much Appreciated and Welcomed. [email protected] For details please visit the following site's. https://physics.uchicago.edu/ https://en.m.wikipedia.org/wiki/Physics https://www.britannica.com/physics Will update soon. https://m.facebook.com/DiscoverPhysics https://www.quora.com/profile/Amir-Khan-2092/ https://DiscoverPhysics
Views: 1 DiscoverPhysics
How to Fly a Helicopter on Mars |Latest News| Extra Focus News|
 
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To understand the monumental task of flying an aircraft on Mars, one needs to consider the atmosphere. The Red Planet's average atmospheric pressure at the surface is about 6 millibars (0.09 psi), less than 0.06 percent of the air pressure at sea level on Earth. To put it another way, the atmosphere on Mars at the planet's surface is as thin as our planet's air at 100,000 feet of altitude. Helicopters have never flown that high. The altitude record for a rotorcraft stands at just over 40,000 feet, and during that flight the engine flamed out and the pilot had to land using autorotation.
Views: 64 Extra Focus News
Storm surge in the Irish Sea Jan 2014.
 
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Storm surges are created when strong winds push water up against a coastline. Low atmospheric pressure associated with weather systems causes the sea level to rise even further. A storm surge in the Irish Sea can raise the average sea level by 1-1.5 metres over a large area.
Views: 2478 NOC news
BI213 Breathing and Gas Exchange
 
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Basic review of the anatomy of human respiratory system, the mechanisms of breathing and gas exchange. Table of Contents: 00:08 - 05:09 - Figure 42.27 07:53 - Partial pressure of gases in atmosphere at sea level under normal conditions: 10:25 - Oxygen binds to Hb cooperativelyIt also disassociates from Hb cooperatively 15:09 -
Views: 213 Ksenia Everton
Physiology of High Altitude Flying 1942 US Army Air Corps Training Film; WWII
 
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Pilot Training Film playlist: https://www.youtube.com/playlist?list=PLCA6387BA013F9A4D more at http://scitech.quickfound.net/aviation_news_and_search.html "Pilots as a group know the atmosphere far better than the average layman. However, high altitude flying demands an even greater knowledge, for it becomes simply a matter of life and death." World War II War Department US Army Air Corps training film TF1-313 Originally a public domain film from the US Army, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original). https://en.wikipedia.org/wiki/Cabin_pressurization Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/ Cabin pressurization is a process in which conditioned air is pumped into the cabin of an aircraft or spacecraft, in order to create a safe and comfortable environment... Pressurization becomes increasingly necessary at altitudes above 12,500 to 14,000 feet (3,800 to 4,300 m) above sea level to protect crew and passengers from the risk of a number of physiological problems caused by the low outside air pressure above that altitude. It also serves to generally increase passenger comfort and is a regulatory requirement above 15,000 feet (4,600 m) in the U.S. The principal physiological problems are listed below. Pressurization of the cargo hold is also required to prevent damage to pressure-sensitive goods that might leak, expand, burst or be crushed on re-pressurization. Hypoxia The lower partial pressure of oxygen at altitude reduces the alveolar oxygen tension in the lungs and subsequently in the brain, leading to sluggish thinking, dimmed vision, loss of consciousness, and ultimately death. In some individuals, particularly those with heart or lung disease, symptoms may begin as low as 5,000 feet (1,500 m), although most passengers can tolerate altitudes of 8,000 feet (2,400 m) without ill effect. At this altitude, there is about 25% less oxygen than there is at sea level. Hypoxia may be addressed by the administration of supplemental oxygen, either through an oxygen mask or through a nasal cannula. Without pressurization, sufficient oxygen can be delivered up to an altitude of about 40,000 feet (12,000 m). This is because a person who is used to living at sea level needs about 0.20 bar partial oxygen pressure to function normally and that pressure can be maintained up to about 40,000 feet (12,000 m) by increasing the mole fraction of oxygen in the air that is being breathed. At 40,000 feet (12,000 m), the ambient air pressure falls to about 0.2 bar, at which maintaining a minimum partial pressure of oxygen of 0.2 bar requires breathing 100% oxygen using an oxygen mask. Emergency oxygen supply masks in the passenger compartment of airliners do not need to be pressure-demand masks because most flights stay below 40,000 feet (12,000 m). Above that altitude the partial pressure of oxygen will fall below 0.2 bar even at 100% oxygen and some degree of cabin pressurization or rapid descent will be essential to avoid the risk of hypoxia. Altitude sickness Hyperventilation, the body’s most common response to hypoxia, does help to partially restore the partial pressure of oxygen in the blood, but it also causes carbon dioxide (CO2) to out-gas, raising the blood pH and inducing alkalosis. Passengers may experience fatigue, nausea, headaches, sleeplessness, and (on extended flights) even pulmonary oedema. These are the same symptoms that mountain climbers experience, but the limited duration of powered flight makes the development of pulmonary oedema unlikely. Altitude sickness may be controlled by a full pressure suit with helmet and faceplate... Decompression sickness The low partial pressure of gases, principally nitrogen (N2) but including all other gases, may cause dissolved gases in the bloodstream to precipitate out, resulting in gas embolism, or bubbles in the bloodstream. The mechanism is the same as that of compressed-air divers on ascent from depth. Symptoms may include the early symptoms of "the bends"—tiredness, forgetfulness, headache, stroke, thrombosis, and subcutaneous itching—but rarely the full symptoms thereof... Barotrauma As the aircraft climbs or descends, passengers may experience discomfort or acute pain as gases trapped within their bodies expand or contract. The most common problems occur with air trapped in the middle ear (aerotitus) or paranasal sinuses by a blocked Eustachian tube or sinuses. Pain may also be experienced in the gastrointestinal tract or even the teeth (barodontalgia)...
Views: 7763 Jeff Quitney
Why can't we fly a plane into space ?
 
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Why can’t we fly a plane into space, what stops it from just flying higher and higher until we are in space?, sounds like a daft question but it has interesting implications that mean we might not be that far from a plane that can fly into space. Patreon : https://www.patreon.com/curiousdroid Paypal.me : https://www.paypal.me/curiousdroid You can now translate this and other curious droid videos, see my video about it here https://www.youtube.com/watch?v=xLPVgIytKyg Well, there several issues but assuming we are in something like a normal jet airliner, then one of the main problems is the air, or lack of it as we get closer to space. A plane flies because as it is propelled forward, the wings, which are shaped to make the air flow faster over the top of them than the bottom, generate lift. As the plane goes faster the wings create more lift and when the lift is greater than the weight of the plane, it will climb up into the air. For our plane to continue to climb it needs more speed to increase the lift. If you throttle back on the speed a bit, the plane will settle in to level flight and if you decrease the speed the plane will start to fall as lift from the wings is not enough to overcome the weight of the plane. Title: TimeTrain Author: P C III Source: www.pipechoir.com License: Creative Commons Attribution 4.0
Views: 4488268 Curious Droid
Highest Barometric Pressure Ever Recorded on Earth | Mini Ice Age 2015-2035 (265)
 
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Extremely out of season typhoon TOKAGE in the West Pacific, Latest ever recorded Hurricane OTTO in the Gulf of Mexico and the Highest ever recorded barometric pressure on Earth over Mongolia. Make Money Now Off Weather Predictions Here - https://tradegenius.co/go/ref/23 Rid Your Body of Unwanted Toxins Now! https://www.getthetea.com Support ADAPT 2030 on PATREON http://www.patreon.com/adapt2030 ADAPT 2030 Mini Ice Age FB Page https://www.facebook.com/Miniiceage Don't get caught un-prepared stock up on survival food today! http://foodforliberty.com/adapt2030 David's Website http://www.oilseedcrops.org Hurricane Otto Caribbean https://pbs.twimg.com/media/CyH1dGrXUAEigIN.jpg https://pbs.twimg.com/media/CyCcLLJUUAAAUfm.jpg https://pbs.twimg.com/media/CyCUx4ZXUAAPheW.jpg https://pbs.twimg.com/media/CyCBkh1XEAIwlMX.jpg https://twitter.com/RyanMaue https://twitter.com/BigJoeBastardi Cut off low, cold for California https://pbs.twimg.com/media/CyIQnHkUQAAelxi.jpg https://pbs.twimg.com/media/CyIQn9hUoAAEtlI.jpg https://pbs.twimg.com/media/CyQat00W8AAp8NP.jpg Intense global high and low temperature differences https://pbs.twimg.com/media/CyI5t04WIAImN7e.jpg https://pbs.twimg.com/media/CyIOnG8VIAE8XK4.jpg Highest Pressure Recorded http://www.westernpacificweather.com/2016/11/21/severe-cold-and-near-record-breaking-high-pressure/ http://www.ogimet.com/show_foremaps.php?lang=en&niv=SFC&date=20161127&run=00&proy=018&zone=CH00&drun=20161127_00 http://www.westernpacificweather.com/surface-analysis-2/ https://watchers.news/2016/11/21/extraordinary-high-pressure-cold-surge-north-east-asia/ Highest Sea Level Air Pressure Above 750 meters https://wmo.asu.edu/content/highest-sea-lvl-air-pressure-above-700m http://www.westernpacificweather.com/2016/11/21/severe-cold-and-near-record-breaking-high-pressure/ https://twitter.com/anthonywx https://pbs.twimg.com/media/CxwqDhiXcAAKSCL.jpg https://pbs.twimg.com/media/CxwqDhlWEAAC_q4.jpg Typhoon/Tropical Storm TOKAGE West Pacific http://www.cwb.gov.tw/V7e/observe/satellite/Sat_EA.htm http://www.cwb.gov.tw/V7e/prevent/typhoon/ty.htm? http://www.westernpacificweather.com/author/robspeta/
Views: 5391 Adapt 2030
Mariana Trench Creatures | 
Mystery behind the Deepest Point on the Earth (In Hindi)
 
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In this video I will be talking the about the deepest point on the earth (#Ocean). Content Source - Riddle YouTube Channel & Various Internet Articles Video Source - Various Video about MT (used under fair usage of YouTube Policy) Mariana Trench is the deepest point of this earth. In this video I will be talking about Mariana Trench (#MarianaTrench) that is the deepest part of the world's oceans (11000 Meters). It is located in the western Pacific Ocean, an average of 200 kilometres (124 mi) to the east of the Mariana Islands, in the Western Pacific East of Philippines. It is a crescent-shaped scar in the Earth's crust, and measures about 2,550 km (1,580 mi) long and 69 km (43 mi) wide on average. It reaches a maximum-known depth of 10,994 metres (36,070 ft) (± 40 metres [130 ft]) at a small slot-shaped valley in its floor known as the Challenger Deep, at its southern end, although some unrepeated measurements place the deepest portion at 11,034 metres (36,201 ft). If #MountEverest were dropped into the trench at this point, its peak would still be over 1.6 kilometres (1 mi) underwater. समुद्र की गहराई नापना बच्चों का खेल नहीं है। इसे ज्ञात करने के लिये ध्वनि तरंगों का प्रयोग किया जाता है। पानी के जहाज पर एक यंत्र लगा दिया जाता है जो अल्ट्रासोनिक तरंगे पैदा करता है। इस यंत्र को ‘फैथोमीटर’ कहते हैं। इन तरंगों को कान से नहीं सुना जा सकता है। इन तरंगों को समुद्र के अंदर भेजा जाता है जो तलहटी से टकराकर परावर्तित हो जाती है। इन तरंगों को प्राप्त करके उनके जाने और लौटकर आने में लगे समय को आधा करके उसे समुद्र के पानी में ध्वनि के वेग के मान से गुणा करके समुद्र की गहराई का पता लगा लिया जाता है। At the bottom of the trench the water column above exerts a pressure of 1,086 bars (15,750 psi), more than 1,000 times the standard atmospheric pressure at sea level. At this pressure, the density of water is increased by 4.96%, so that 95 litres of water under the pressure of the Challenger Deep would contain the same mass as 100 litres at the surface. The temperature at the bottom is 1 to 4 °C (34 to 39 °F). Xenophyophores have been found in the trench by Scripps Institution of Oceanography researchers at a record depth of 10.6 kilometres (6.6 mi) below the sea surface. On 17 March 2013, researchers reported data that suggested microbial life forms thrive within the trench The Mariana Trench is part of the Izu-Bonin-Mariana subduction system that forms the boundary between two tectonic plates. In this system, the western edge of one plate, the Pacific Plate, is subducted (i.e., thrust) beneath the smaller Mariana Plate that lies to the west. Crustal material at the western edge of the Pacific Plate is some of the oldest oceanic crust on earth (up to 170 million years old), and is therefore cooler and more dense; hence its great height difference relative to the higher-riding (and younger) Mariana Plate. The deepest area at the plate boundary is the Mariana Trench proper. The movement of the Pacific and Mariana plates is also indirectly responsible for the formation of the Mariana Islands. These volcanic islands are caused by flux melting of the upper mantle due to release of water that is trapped Many extinct animals are rumored to be found there. Otherworldly Creatures that are found there are 1. The Ghostfish 2.The Barreleye Fish or Spookfish 3. The Dumbo Octopus 4. The Goblin or Vampire Shark 5. Giant Toxic Amoebas Snailfish Surprise Based on these observations we predicted that when exploring the Mariana Trench – the world’s deepest – we would find the the Mariana’s own personal snailfish, probably living between 6500m and around 7500m, with more being found at the deeper end of that range. Music - #Mystery by GoSoundtrack Creative Commons — Attribution 4.0 International — CC BY 4.0 https://creativecommons.org/licenses/...
Views: 224505 Unknown Facts
Find the average pressure hailstones exert on a window Problem 1-21
 
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An Introduction to Thermal Physics Daniel V. Schroeder Problem 1-21 During a hailstorm , hailstones with an average mass of 2 g and a speed 15m/s strike a window pane at a 45 degree angle. The area of the window is .5 m^2 and the hailstones hit it at a rate of 30 per second. What average presure do they exert on the window? How does this compare to the pressure of the atmosphere?
Views: 933 Marx Academy