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: 13194 Michel van Biezen
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: 142467 GREENPOWERSCIENCE
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: 165805 Tyler DeWitt
This physics video tutorial provides a basic introduction into absolute pressure and gauge pressure. The gauge pressure is the difference between the absolute pressure and the atmospheric pressure. A positive gauge pressure means the absolute pressure is above the atmospheric pressure. A negative gauge pressure means the absolute pressure is less than the atmospheric pressure. This fluid mechanics video contains plenty of practice problems. This video explains how to calculate the gauge pressure of a two fluid mixture such as oil and water. New Physics Video Playlist: https://www.youtube.com/playlist?list=PL0o_zxa4K1BU6wPPLDsoTj1_wEf0LSNeR Access to Premium Videos: https://www.patreon.com/MathScienceTutor https://www.facebook.com/MathScienceTutoring/
Views: 48303 The Organic Chemistry Tutor
At standard sea level pressure, liquid nitrogen has a boiling point of -321 °F / -196 °C. That's just 77 °C above absolute zero. It's very cold stuff! Solid nitrogen is something few people have ever seen. In this lecture, ChefSteps explains why liquid nitrogen goes solid under an extreme vacuum: http://chfstps.co/1qfAoOt At ChefSteps, we don't tell you how to cook, we show you—with recipes designed to inspire and educate, tested techniques for successful results at home, and a lively forum where you'll chat with other chefs and home-cooking enthusiasts. Visit ChefSteps.com for more videos, recipes, classes, and techniques. http://chfstps.co/1paXXVd Become a member and be the first to know about new recipes, special offers, and goings-on around the kitchen. http://chfstps.co/1paXXVd Like us on Facebook to stay updated on our latest projects. http://chfstps.co/1thBubb Follow us on Instagram http://chfstps.co/1nDs8Fj and Pinterest http://chfstps.co/1koB9kI for peeks inside the daily workings of our Pike Place Market kitchen lab. Read our blog for inspiring ideas and behind-the-scenes updates. http://chfstps.co/1rhTgh0 Follow us on Twitter to stay up to speed on what's cooking in the ChefSteps kitchen. http://chfstps.co/1gMVbWA
Views: 894921 ChefSteps
The maximum height of a siphon is generally assumed to be dependent on barometric pressure—about 10 m at sea level. This limit arises because the pressure in a siphon above the upper reservoir level is below the ambient pressure, and when the height of a siphon approaches 10 m, the pressure at the crown of the siphon falls below the vapour pressure of water causing water to boil breaking the column. After breaking, the columns on either side are supported by differential pressure between ambient and the low-pressure region at the top of the siphon. Here we report an experiment of a siphon operating at sea level at a height of 15 m, well above 10 m. Prior degassing of the water prevented cavitation. This experiment provides conclusive evidence that siphons operate through gravity and molecular cohesion. The height limit of a siphon. A. Boatwright et al (2015), Scientific Reports http://dx.doi.org/10.1038/srep16790
Views: 241 Science Editor
PRESSURE INSTRUMENTATION 1. 1# Pressure Measurement • Pressure is the force exerted per unit area • Pressure is the action of one force against another force. Pressure is force applied to, or distributed over, a surface. The pressure P of a force F distributed over an area A is defined as P = F/A TOTAL VACUUM - 0 PSIA PRESSURE ABSOLUTE GAUGE COMPOUND BAROMETRIC RANGE ATMOSPHERIC PRESSURE NOM. 14.7 PSIA 2. 2# Pressure Measurement Pressure Units psi 100 bar 6.895 mbar 6895 mm of Hg 5171 mm of WC 70358 in of WC 2770 Kg/cm2 7.032 Pascal 689476 kPa 689.5 atm 6.805 3. 3# Pressure Measurement Terms • Absolute Pressure Measured above total vacuum or zero absolute. Zero absolute represents total lack of pressure. • Atmospheric Pressure The pressure exerted by the earth’s atmosphere. Atmospheric pressure at sea level is 14.696 psia. The value of atmospheric pressure decreases with increasing altitude. • Barometric Pressure Same as atmospheric pressure. • Gauge Pressure The pressure above atmospheric pressure. Represents positive difference between measured pressure and existing atmospheric pressure. Can be converted to absolute by adding actual atmospheric pressure value. • Differential Pressure The difference in magnitude between some pressure value and some reference pressure. In a sense, absolute pressure could be considered as a differential pressure with total vacuum or zero absolute as the reference. Likewise, gauge pressure (defined above) could be considered as Differential Pressure with atmospheric pressure as the reference. 4. 4# Pressure Gauge PRESSURE GAUGES: • A Pressure Gauge is used for measuring the pressure of a gas or liquid. • A Vacuum Gauge is used to measure the pressure in a vacuum. • A Compound Gauge is used for measuring both Vacuum and Pressure. • Pressure Gauges are used for Indication only. 5. 5# Pressure Gauge 6. 6# Measuring Principle Bourdon tube measuring element is made of a thin-walled C-shape tube or spirally wound helical or coiled tube. When pressure is applied to the measuring system through the pressure port (socket), the pressure causes the Bourdon tube to straighten itself, thus causing the tip to move. The motion of the tip is transmitted via the link to the movement which converts the linear motion of the bourdon tube to a rotational motion that in turn causes the pointer to indicate the measured pressure. Coiled Bourdon Helical Bourdon Pressure Gauge “C” Type Bourdon 7. 7# When selecting a Pressure Gauge, care should be given to a number of parameters which have an effect on the gauge’s accuracy, safety, and cost. • Accuracy required • Dial size • Operating pressure range • Chemical compatibility with gauge construction materials • Operating temperature range • Vibration, pulsation, and shock • Pressure fluid composition • Mounting requirement Pressure Gauge Selection Guideline 8. 8# Pressure Gauge Installation Gas Service Liquid Service • Top connection preferred for gas installations & side connection preferred for liquid installations. • The pressure gauge can be connected to the pipe by individual block and bleed valves or a two way manifold.
Views: 2388 Automation Forum
A fun, super cheap project yields an awesome tool/toy to play with. Can side tap: http://amzn.to/1NzRZbA You can salvage the same dual valve I use off of this side can tap Line tap to recharge fridges/ac units: http://amzn.to/1ThGmdG GREAT for science projects! I've gotten this pump to pull to approx 15 microns, but easily does 25microns. A theoretical perfect vacuum is 29.92inhg. You won't achieve this with any pump and need to adjust for your altitude. Every 1000 feet you are above sea level you need to subtract 1 inch of mercury. So I live at 4500 feet and that makes a perfect theoretical vacuum for me 25.42inhg(29.92 minus 4.5). The barometric pressure plays a role as well by it is negligible. This link has a good calculator: https://www.turntex.com/component/content/article?id=77:maximum-theoretical-vacuum-calculator&catid=36:main-data Water boiling point to vacuum: http://www.engineersedge.com/h2o_boil_pressure.htm More useful info: https://skunkpharmresearch.files.wordpress.com/2013/07/thc-boiling-point-of-thc-under-vacuum.jpg
Views: 73501 sixtyfiveford
Vacuum and pressure are two sides of the same coin. A manometer can measure both. In this episode, Harley shows how to make a DIY gauge to measure relatively low vacuums and pressures for shop use. Part 1: How to quiet a shop vac: https://www.youtube.com/watch?v=XQGOusi5x3E Part 2: Central shop vac efficiency: https://www.youtube.com/watch?v=UbLElnfZmno Unit conversion web site: http://www.theunitconverter.com/unit-conversion-calculator.html For a written transcript, go to http://www.house-of-hacks.com/2015/09/how-to-make-vacuum-or-pressure-gauge.html Music and photos under Creative Commons License By Attribution 3.0. Intro/Exit: "Hot Swing" by Kevin MacLeod (http://incompetech.com) Incidental music: “George Street Shuffle” by Kevin MacLeod (http://incompetech.com) “Mining by Moonlight” by Kevin MacLeod (http://incompetech.com) SU Carbs photo: by Cgxke at https://commons.wikimedia.org/wiki/File:Carbs-SU-HD8.jpg Photos under Creative Commons Attribution 2.5 Generic: Organ pipes photo: by Xauxa at https://commons.wikimedia.org/wiki/File:Forkarla_kyrka_organ_pipes.jpg
Views: 53716 House of Hacks
There were many iterations of the spacesuit before astronauts started wearing what they do today, but how do they work? How Do Astronauts Poop in Space? ►►►► http://bit.ly/1SBdlNe Sign Up For The TestTube Newsletter Here ►►►► http://bit.ly/1myXbFG Read More: Space Educator’s Handbook: The Spacesuit http://er.jsc.nasa.gov/seh/suitnasa.html “Earth's atmosphere is 20 percent oxygen and 80 percent nitrogen from sea level to about 75 miles up, where space begins. At 18,000 feet, the atmosphere is half as dense as it is on the ground, and at altitudes above 40/000 feet, air is so thin and the amount of oxygen so small that pressure oxygen masks no longer do the job. Above the 63,000-foot threshold, humans must wear spacesuits that supply oxygen for breathing and that maintain a pressure around the body to keep body fluids in the liquid state. At this altitude the total air pressure is no longer sufficient to keep body fluids from boiling.” Apollo Lunar Suit https://airandspace.si.edu/exhibitions/space-race/online/sec300/sec370.htm “This space suit was worn on the Moon by an Apollo 15 astronaut in 1971. Moon dust is still visible on the legs and boots.The space suits had to meet all the astronauts' life-support needs. Backpacks (left on the Moon) provided oxygen, temperature and humidity control, suit pressure, and power for their communications and data display systems. This suit, made of 22 layers of several different materials plus a 3-layer undergarment, also protected them against extreme lunar temperatures and micrometeoroids.” ____________________ 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: 145076 Seeker
Create fresh water from seawater inexpensively. The process of Vacuum Desalination takes advantage of the fact that water, when pulled upward by a vacuum, cannot rise more than 33 feet above the level of a surrounding body of water. So when a tube 50 feet tall (closed at the upper end) is inverted in a body of seawater, and a vacuum is applied, the seawater can only rise to 33 feet. The space above that water is at a very low pressure, and can be almost fully evacuated. When the pressure above the water level reaches 0.5 psi, the seawater will vaporize (boil) at only about 85 degrees F, which is the ambient temperature in the tropics. Once vaporization has occurred, the water vapor in the evacuated space can condense on a cold surface within that space, and liquid fresh water is produced on that cold surface. From there, gravity can be employed to collect the fresh water, and pump it to its destination. Copyright P. Lawton, 2009
Views: 35766 Tomahawk4196
16X speed first! Make a home made vacuum chamber in minutes! Place a car tire pump inside a gallon pickle jar and poke a small hole for the air tube and power wires in the lid. Seal the tube and wires with hot glue gun. A vacuum chamber is a rigid enclosure from which air and other gases are removed by a vacuum pump or in this case an ordinary pump on the inside pumping out. This results in a low pressure environment within the chamber, commonly referred to as a vacuum. A vacuum environment allows researchers to conduct physical experiments or to test mechanical devices which must operate in outer space (for example) or for processes such as vacuum drying or vacuum coating. Chambers are typically made of metals which may or may not shield applied external magnetic fields depending on wall thickness, frequency, resistivity, and permeability of the material used. Only some materials are suitable for vacuum use. Chambers often have multiple ports, covered with vacuum flanges, to allow instruments or windows to be installed in the walls of the chamber. In low to medium-vacuum applications, these are sealed with elastomer o-rings. In higher vacuum applications, the flanges have hardened steel knives welded onto them, which cut into a copper gasket when the flange is bolted on. A type of vacuum chamber frequently used in the field of spacecraft engineering is a thermal vacuum chamber, which provides a thermal environment representing what a spacecraft would experience in space. Contents  1 Vacuum chamber materials 2 Vacuum degassing 2.1 Process 3 Vacuum drying 4 See also 5 References Vacuum chamber materials Vacuum chambers can be constructed of many materials. "Metals are arguably the most prevalent vacuum chamber materials." The strength, pressure, and permeability are considerations for selecting chamber material. Common materials are: Stainless Steel Aluminum Mild Steel Brass High density ceramic Glass Acrylic Vacuum degassing "Vacuum degassing is the process of using vacuum to remove gases from compounds which become entrapped in the mixture when mixing the components." To assure a bubble-free mold when mixing resin and silicone rubbers and slower setting harder resins, a vacuum chamber is required. A small vacuum chamber is needed for de-airing (eliminating air bubbles) for materials prior to their setting. The process is fairly straight forward. The casting or molding material is mixed according to the manufacturers directions. Process Since the material will expand 4-5 times under a vacuum, the mixing container must be large enough to hold a volume of four to five times the amount of the original material that is being vacuumed to allow for the expansion; if not, it will spill over the top of the container requiring clean-up that can be avoided. The material container is then placed into the vacuum chamber; a vacuum pump is connected and turned on. Once the vacuum reaches 29 inches (at sea level) of mercury, the material will begin to rise (resembling foam). When the material falls, it will plateau and stop rising. The vacuuming is continued for another 2 to 3 minutes to make certain all of the air has been removed from the material. Once this interval is reached, the vacuum pump is shut off and the vacuum chamber release valve is opened to equalize air pressure. The vacuum chamber is opened, the material is removed and is ready to pour into the mold. Though a maximum vacuum one can theoretically achieve at sea level is 29.921 inches of mercury (Hg,) this will vary significantly as altitude increases. For example for a mold making in Denver, Colorado, which sits at 5280 feet above sea level, one can only achieve a vacuum on the mercury scale of 24.896 Hg in their vacuum chamber. To keep the material air-free, it must be slowly poured in a high and narrow stream starting from the corner of the mold box, or mold, letting the material flow freely into the box or mold cavity. Usually, this method will not introduce any new bubbles into the vacuumed material. To insure that the material is totally devoid of air bubbles, the entire mold/mold box may be placed in the chamber for an additional few minutes, this will assist the material in flowing into difficult areas of the mold/mold box. Vacuum drying Water and other liquids may accumulate on a product during the production process. "Vacuum is often employed as a process for removing bulk and absorbed water (or other solvents) from a product. Combined with heat, vacuum can be an effective method for drying."  See also Bell jar Optical window Thermal vacuum chamber Vacuum engineering
Views: 2779 hoskand
This is an interesting way to turn a classic science experiment into a functioning addition to a fish tank. It makes a pretty cool display! Be sure if you try this to have plenty of water circulation in your tank or the water in the suspended area could become oxygen deprived. There really shouldn't be any problems if the tank is well functioning prior to adding the new compartment. You may also want to put a wide base of some kind below the supports so the extra weight is spread over a larger area and you won't risk cracking the bottom of your tank. I learned the trick with the styrofoam float from this video: https://youtu.be/miAfNiVWjqw #NightHawkInLight -~-~~-~~~-~~-~- Check out my latest video: "How To View Invisible Air Currents With Lasers" https://www.youtube.com/watch?v=K94Cc21KEIA -~-~~-~~~-~~-~-
Views: 4317926 NightHawkInLight
In order to get the very lowest pressure, we decided to launch our new nEXT85 to the edge of space, 32km above the earth.... but it turns out all we had to do was turn it on. At 40 kilometres above sea level, the atmospheric pressure is 0.5mbar - but did you know that the nEXT85 can actually reach 5x10-10 mbar? That's the pressure you would find in low earth orbit, at approximately 600 kilometres above earth. FIND OUT MORE! www.edwardsvacuum.com/nEXT85_UK www.edwardsvacuum.com/nEXT85_DE www.edwardsvacuum.com/nEXT85_FR www.sentintospace.com
Views: 1975 Edwards Vacuum
n this post we will learn how to Interface BMP180 Sensor with Arduino to measure Altitude, Pressure & Temperature using Arduino. Here we will learn about the barometric sensor BMP180 for Altitude, Pressure & Temperature Measurement using Arduino. The BMP180 Sensor is a barometric sensor capable of measuring pressure, temperature & altitude as well. The BMP180 Arduino Code is given below. But before that you can go through our easy tutorial about BMP180 through this link:How to interface BMP180 with Arduino With Arduino Barometric condition is one of the criteria used to predict coming change in weather and deduce altitude above sea level. Here is a demo to show you how to read the barometric data from this Grove – Barometer Sensor (BMP180). Like most pressure sensors, the BMP180 measures absolute pressure. This is the actual ambient pressure seen by the device, which will vary with both altitude and weather. Before taking a pressure reading you must take a temperature reading................ Arduino Source Code/Library Link: http://www.how2electronics.com/bmp180-for-altitude-pressure-temperature-measurement/ Drop a like if you liked the video. Don't forget to subscribe to our channel for more Electronics project and tutorials. Website: http://how2electronics.com/ Facebook: https://www.facebook.com/electronicsbyalex/
Views: 1371 How To Electronics
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: 4683671 Curious Droid
Bringing back to life a forgotten 7up refrigerator vending machine. Line tap: http://amzn.to/1ThGmdG Can side tap: http://amzn.to/1NzRZbA Watch me make the "LIL Sucker" vacuum pump: https://youtu.be/CMe25d_KVP0 A theoretical perfect vacuum is 29.92inhg. You won't achieve this with any pump and need to adjust for your altitude. Every 1000 feet you are above sea level you need to subtract 1 inch of mercury. So I live at 4500 feet and that makes a perfect theoretical vacuum for me 25.42inhg(29.92 minus 4.5). The barometric pressure plays a role as well by it is negligible. This link has a good calculator: https://www.turntex.com/component/content/article?id=77:maximum-theoretical-vacuum-calculator&catid=36:main-data Water boiling point to vacuum: http://www.engineersedge.com/h2o_boil_pressure.htm More useful info: https://skunkpharmresearch.files.wordpress.com/2013/07/thc-boiling-point-of-thc-under-vacuum.jpg This is a Cornelius Slider Vending Machine made in 1964. It's cheap to run at around .9 kwh a day . For me that equates to around 12cents a day or around $40 a year.
Views: 32570 sixtyfiveford
In this video Cody and I are teaming up to show you why vacuum suction is measured in "inches of Mercury" Check out Cody's homemade Barometer: https://goo.gl/bUKDXp Subscribe to Cody's Lab: https://goo.gl/f3eQ5f Subscribe & “Ring the Bell”: https://goo.gl/618xWm 3 Gal Vacuum Chamber: http://amzn.to/2jfcXqq Yard Stick: http://amzn.to/2uCddab Electrical Tape: http://amzn.to/2uC0kfZ See What Else I’m Up To: Instagram: https://goo.gl/C0Q1YU Facebook: https://goo.gl/mQbwtK Pinterest: https://goo.gl/Gbffq4 Business Inquiries: For business and sponsorship inquiries please contact us directly: https://goo.gl/Z2L6yM Music by AlexGrohl - "Upfliting Indie Rock" Commercial rights purchased from audiojungle.net WARNING: This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume the responsibility for the results. Have fun, but always think ahead, and remember that every project you try is at YOUR OWN RISK. ✌️👑 RANDOM NATION: TRANSLATE this video and you'll GET CREDIT! Click Here: https://goo.gl/RnStGe Want credit TRANSLATING other videos? Click Here to see where else you can contribute: https://goo.gl/Dmpwbq
Views: 1064224 The King of Random
Cold water about 23 degree Celsius water is placed in a vacuum chamber and boils when the pressure in the chamber approximates the vapor pressure. I placed a thermometer inside the chamber and observed a decrease in temperature as it boils.
Views: 203093 MrGrodskiChemistry
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: 224167 It's AumSum Time
How to use a vacuum gauge on a carbureted engine to diagnose problems like a sticky valve, ignition component problems or too much advanced timing, a dirty air filter, vacuum leaks, worn piston rings, improper cam timing, rich or lean mixture, and more. More information is located on Holley's website: http://forums.holley.com/entry.php?429-How-To-Adjust-The-Idle-Mixture-On-Holley-Carbs
Views: 252253 HolleyPerformance
Click to subscribe for free! http://bit.ly/POIaN7 Links to learn more and sources below. http://www.twitter.com/tweetsauce http://www.facebook.com/VsauceGaming Music by Jake Chudnow: https://soundcloud.com/jakechudnow http://www.YouTube.com/JakeChudnow Great video from Veritasium about the WORLD'S LONGEST POSSIBLE STRAW: https://www.youtube.com/watch?v=HUmZrtiXDik Vsauce video about nothing: http://www.youtube.com/watch?v=K93zcgFsynk Vsauce video about helium running out (and other things): http://www.youtube.com/watch?v=DU3OdTLuHf0 Vsauce video about being naked in space: http://www.youtube.com/watch?v=lD08CuUi_Ek Earth mass gained and lost: http://gizmodo.com/5882517/did-you-know-that-earth-is-getting-lighter-every-day Earth mass gained from sunlight: http://image.gsfc.nasa.gov/poetry/ask/a11325.html Limit of atmospheric pressure: http://en.wikipedia.org/wiki/Suction Buoyancy: http://en.wikipedia.org/wiki/Buoyancy Buoyancy caused by air: http://www.madsci.org/posts/archives/2010-03/1267798222.Ph.r.html Awesome diagram of Earth's atmosphere: http://library.thinkquest.org/C003124/en/atmos.htm Pic of meteor falling to Earth: http://www.nasa.gov/mission_pages/station/multimedia/gallery/iss028e024847.html PDF about space-matter entering Earth: http://static.icr.org/i/pdf/technical/Moon-Dust-and-the-Age-of-the-Solar-System.pdf Links about breathes and molecules: http://www.vendian.org/envelope/dir2/breath.html http://rsloan.newsvine.com/_news/2009/05/03/2768580-the-odds-that-youll-breathe-a-single-molecule-of-air-that-once-traveled-through-the-lungs-of-jesus http://www.thehappyself.com/happiness-challenge-1-100-breaths Brain metabolism: http://www.acnp.org/g4/gn401000064/ch064.html Components of inhaled and exhaled air: http://en.wikipedia.org/wiki/Breathing#Breathing_in_gas
Views: 7715345 Vsauce
Check out http://www.engineer4free.com for more free engineering tutorials and math lessons! Fluid Mechanics Tutorial: Water and oil are in a tank, calculate pressure at the bottom Please support my work: PATREON | https://www.patreon.com/Engineer4Free Every dollar is seriously appreciated and enables me to continue making more tutorials
Views: 64347 Engineer4Free
Check out http://www.engineer4free.com for more free engineering tutorials and math lessons! Fluid Mechanics Tutorial: How to calculate pressure at a given depth in a tank Please support my work: PATREON | https://www.patreon.com/Engineer4Free Every dollar is seriously appreciated and enables me to continue making more tutorials
Views: 64603 Engineer4Free
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: 154799 Wayne Breslyn
you put the card on the glass, turn it upside down, and let it go. If there were no atmospheric pressure surrounding the glass and us and everything on the surface of the earth, the air inside the glass, above the water, would expand, into the vacuum, and burst forth through the water, busting the card right off, in fact, I would not be able to hold the card on the with the pressure exerted by the gas at atmospheric pressure, in a vacuum, is would just blast everywhere, and I would be showered with water, and also die in the vacuum with no air. but you've gotta have dedication to your bit, right. But thankfully, for us all, there is an atmosphere here, and it exerts around one atmosphere of pressure on everything at sea level. And because it is there, is is pushing against the card, too, and, for the air to expand, and burst forth through the water, freeing itself from the tyranny of enclosure, and assume its true form, it must become less in pressure, but if it did, it would just get squished back down by the atmospheric pressure around it, pressing on the card, so the potential vacuum caused by the air inside wanting to expand but not being able to because of the pressure everywhere on the surface of the earth, that is enough to hold it there. So basically, it proves the atmosphere is there, because it is holding it there, bam, woo science.
Views: 29 Ché Lydia Xyang
Virgin Hyperloop One set a test speed record of nearly 240 miles per hour during its third phase of testing at its site in Nevada. The company also tested a new airlock which helped transition test pods between atmospheric and vacuum conditions during a test campaign which was completed on December 15, 2017. The tests were conducted in a tube depressurized down to the equivalent air pressure experienced at 200,000 feet above sea level. A Virgin Hyperloop One pod quickly lifts above the track using magnetic levitation and glides at airline speeds for long distances due to ultra-low aerodynamic drag. Tech Insider tells you all you need to know about tech: gadgets, how-to's, gaming, science, digital culture, and more. Subscribe to our channel and visit us at: http://www.businessinsider.com/sai TI on Facebook: https://www.facebook.com/techinsider TI on Instagram: https://www.instagram.com/tech_insider/ TI on Twitter: https://twitter.com/techinsider
Views: 14490 Tech Insider
I put some water in a vacuum chamber to see if i can get to boil from the lack of pressure but I could only get some air bubbles to form my alt. is 3500 ft above sea level and it's a hand pump so it didn't happen bummer I did get it down to 22 inches of mercury Please support projects on Patreon https://www.patreon.com/Permofit you can find me on Facebook https://www.facebook.com/Permofit/ and Twitter https://twitter.com/permofit
Views: 692 permofit
My Earth Science Review course: https://www.gazdonianproductions.com/regents-review-earth-science.html Boiling point shown at elevation of 7,400 ft in Pecos, New Mexico. Big thanks to Jeannie and Joel! Copyright Tom Gazda 2014
Views: 1345 GazdonianProductions
The Testo 511 is normally used to measure absolute pressure, e.g. for density compensation in flow measurement in ducts, laboratories and production processes. Other measurement parameters are barometric air pressure (= air pressure at sea level) and altitude above sea level. For more info and direct purchase of this instrument visit https://instrukart.com/pressure-transmitters/336-testo-511-pocket-sized-absolute-pressure-meter.html Kindly Subscribe our Channel for more updates. Connect With Us: Website: https://www.instrukart.com/ Facebook: https://www.facebook.com/InstrukartHo... Call Us: +91-7331110506
Views: 414 Instrukart Holdings
Chinese researchers at Southwest Jiaotong University in Chengdu have successfully tested a prototype megathermal superconducting maglev train. The super-maglev, like current magnetic levitation trains, makes use of a strong electric current to power magnets enabling the train to float above its rail. This avoids the track friction experienced by regular high-speed trains. But that's where the similarity ends. The world's fastest maglev train is limited by air resistance. It has reached a top speed of 431 kilometers per hour. A super-maglev could break this speed barrier by operate in a vacuum tube with 10 times less than normal atmospheric pressure at sea level. Such a train could reach speeds as high as 3,000 kilometers per hour.
Views: 42870 News Direct
This video will show you how to vacuum and remove algae off of the bottom of your swimming pool so that it does not go back into the water. -~-~~-~~~-~~-~- Please watch: "Super Clean Free Tee Giveaway - Home Owner Repair " https://www.youtube.com/watch?v=EZJuTZ8rjWM -~-~~-~~~-~~-~-
Views: 227759 Homeowner Repair
실험실에서 탄생한 대기권...기상관측 정확도 높인다 Korean researchers have developed technology to help bring about more accurate long-term climate predictions. Park Se-young has more. Radiosondes are carried by weather balloons to altitudes exceeding 35 kilometers above sea level, ...and their sensors measure pressure, temperature and relative humidity. Made up of sensors and transmitters, the instruments are cheap and can be used any time and in any weather conditions. However, measurements can be influenced by sunlight, wind and atmospheric pressure before the instruments reach the target altitude. Korean researchers have developed a new technology that can accurately observe weather by eliminating these external factors. "The pressure, temperature and wind speed all change when the radiosonde is ascending into the atmosphere, and the technology replicates those same weather conditions." The simulation system and temperature control technology can be precisely controlled to create the meteorological elements of the actual atmosphere. The temperatures of the troposphere 10 to 15 kilometers above ground are mostly used for short-range forecasts, …and stable temperatures of the stratosphere are used for long-term climatic predictions. The technology works at altitudes up to 35 kilometers above sea level and in temperatures as low as minus 70 degrees Celsius. "Application of our technology is expected to contribute not only to short-term forecasts, but also in preparation measures to adapt to long-term climate change." By localizing radiosondes, the technology is expected to pave the way for Korea to become a Weather-Ready Nation. Park Se-young, Arirang News. Arirang News Facebook: http://www.facebook.com/arirangtvnews
Views: 82 ARIRANG NEWS
WEBSITE: http://www.swimmingpoollearning.com/ YouTube Video Index -- A list of all of my videos: http://poolmandave.blogspot.com/2014/03/swimming-pool-tips-reviews-how-to-video.html Emptying your pump basket is essential in maintaining your pool as leavers and debris will enter the pump basket through vacuuming your pool, an automatic cleaner or through the skimmer area of the pool. You MUST to the pool OFF first before doing this or the pressure created can be dangerous. If you have an Above Ground Pool or your Equipment is located below the pool's water line watch this video also: http://youtu.be/GVPhqvNcrZ4 I walk you through a variety of different pumps in this video: Covered in detail: Pentair Wisperflow Jandy Stealth Hayward North Star Briefly covered: Hayward Super II Pump Sta-rite Jandy Purex Brass Pump I wanted to show the different types of pumps and some tips on each. There are a variety of pumps but it is the same basic technique: Turn the pool equipment off Take off the lid Clean the basket Fill the pump with water Put lid back on Turn the pool on Let air out of the filter Note that all the examples shown are for pools as the same level as the equipment. If your pool is below sea level you will have to stop the water by closing a ball valve or other valve or stick a Tennis Ball in the pool skimmer. For Specific videos (all are in the playlist too) click on one of these: Pool Pump not Priming Part 1: http://youtu.be/_k-BLL98bFU Manually priming your pump, not priming part 2: http://youtu.be/oshWO3zq17o Pump Lid O-ring, Pool Pump not priming Part 3: http://youtu.be/pCzVDJzzuJw Clogged Impeller, pool pump not priming Part 4: You are watching it now. Skimmer Weir stuck, pump not priming Part 5: http://youtu.be/iKWJIFcK4MA Pump Impeller & Diffuser Issues, Pool Pump Not Priming Part 6: http://youtu.be/YQl0W5doYSIHow to Unclog a Pool Skimmer Line, Pool Pump Not Priming Part 7: http://youtu.be/5nt6t1vMrQM Pool Skimmer Weir replacement & Install: http://youtu.be/DTDWA-la33w Pool motor tips, motor burning out: http://youtu.be/IdpoNzrBV8M Pool Water Level, proper water level: http://youtu.be/6dXIY0YN7bE Repairing a Pump Suction Leak: http://youtu.be/RYXEvOzPgi8 Replacing a Pool Pump Housing Gasket: http://youtu.be/r0ReyYVpVM8 Variable Speed Pumps, Dual Speed Pumps, a quick overview: http://youtu.be/YgOq1X65Kvg For more Pool Pump Priming Issues see this Playlist on my Channel: Pool Pump Not Working http://www.youtube.com/playl Mrdgvb1 Social Media Links: Google +: https://plus.google.com/b/107735343574734346096/ Blogger: http://poolmandave.blogspot.com/ Facebook: https://www.facebook.com/pages/Youtube-Mrdgvb1/381257741926763?ref=hl
Views: 287289 Swimming Pool Tips, Reviews & How To - SPL
If I did live on a giant floating ball and looked out on a plane, what would I see? With this video, I try to answer this question with a very small model. Of course, my Galaxy s8+ camera lense is way too far away from the surface of the exercise ball to replicate someone standing at sea level. I remember hearing the atmosphere described as being "as thick as the varnish on a model globe. 300 miles of atmosphere is tiny when compared to the GIANT ROUND earth. A Couple of other answers for people who believe the earth is flat: The atmosphere does not move independently of the surface of the earth. When have you ever heard of a 1000mph wind? This means that when a plane takes off, it doesn't have to "catch up" with a runway moving at 1000mph, like the rotation of the earth. A pilot doesn't have to "dip his nose" to compensate for the earth's curvature. To put more distance between the plane and the earth, the pilot would need to increase the plane's altitude. During level flight, the plane's trajectory matches the curve. The spirit level on the plane experiment was misguided and stupid. Flat and level are not the same thing. The vacuum of space could never "suck the atmosphere" off of the earth. Our atmosphere is a gradient of gas pushed onto the earth by.... gravity! At sea level, air pressure is high because of all the air above it pushing down on the air below. As you get higher into the atmosphere the air gets "thinner", less compressed because there is less air above to compress it. Eventually, there is no more air, pressure is non existent. The outer reaches of the atmosphere is roughly 300 miles above sea level. There is no dome up there, the gas just runs out.
Views: 88 Aaron L
"What Is The Boiling Point Of Water At Sea Level? Watch more videos for more knowledge What Is The Boiling Point Of Water At Sea Level ... https://www.youtube.com/watch/QOVXiRTyABE How elevation affects boiling point of water: 7,400 ... https://www.youtube.com/watch/o6G3aucU2c8 To find out the boiling point of water at sea level ... https://www.youtube.com/watch/ifFDrahHBlo Boiling Point of Water as a Function of Altitude ... https://www.youtube.com/watch/ewh354jrYso Why Does The Boiling Point Of Water Drop With ... https://www.youtube.com/watch/ULoUojZNwFc What Is The Boiling Point Of Water In A Vacuum ... https://www.youtube.com/watch/DlccjkMDfd4 Boiling Point of Water - MeitY OLabs - YouTube https://www.youtube.com/watch/nZXoe0fgJ8Q Science Rap: Elevation and Boiling Point - YouTube https://www.youtube.com/watch/k3sX00JIeCI What Is The Effect Of Pressure On The Boiling Point ... https://www.youtube.com/watch/En2OTthAgSQ Effect of Pressure on the Boiling Point of Water - YouTube https://www.youtube.com/watch/AFARWpoaSJA Boiling Water at Altitude - YouTube https://www.youtube.com/watch/9zbiyB4f50s Why Is Boiling Point Affected By Altitude - YouTube https://www.youtube.com/watch/JW9SLSJeLCs The Effect of Altitude on Boiling Point and Pressure ... https://www.youtube.com/watch/PGzteRXVkkg Boiling point and Melting point-Physical Properties ... https://www.youtube.com/watch/AW8v2Fx0Y8c What Is The Boiling Point Of Milk? - YouTube https://www.youtube.com/watch/qjOEj8uRFO8 How to Boil Water - YouTube https://www.youtube.com/watch/kieGBkOdyMU Boiling Water On Mount Everest! | Earth Lab - YouTube https://www.youtube.com/watch/8lyqFkFsH28 Why Does Water Boil At A Lower Temperature In ... https://www.youtube.com/watch/lR1h6lcLXjA How Does Altitude Affect The Freezing Point Of ... https://www.youtube.com/watch/4s4YMfq3zbk What Is The Boiling Point Of Salt Water? - YouTube https://www.youtube.com/watch/1rgEc5foe8s"
Views: 228 S AnswerZ
It is surely the stuff of science fiction: An extraordinary being arrives on Earth that can withstand a tortuous array of conditions: boiling, freezing, tremendous atmospheric pressure, near total dehydration, and exposure to massive amounts of ionizing radiation. While many joke that "cockroaches would be the only thing to survive an extreme global nuclear war", in fact, cockroaches would not. These creatures would. They are also the only life form known to be able to survive the near vacuum of space for extended periods. (Note: humans can actually survive the near vacuum of space for about 90 seconds without long term damage, but we have nothing on this creature.) They can lie dormant for 10-100 years and then come back to life with a drop of water. When it comes to durability, nothing on Earth can match the very real "Water Bear"- a tiny creature the size of a grain of sand (averaging about a millimeter long) that is lauded as the toughest creature on planet Earth. There are over 1000 known species of Water Bears (called such because when they walk, their gait loosely resembles plump little bears ambling along on eight legs). Also known as "tardigrades" (from the Latin "tardigradus" meaning 'slow walker'), they thrive in the most extreme environments on every corner of the Earth- from the Equator to the Polar regions- forests, swamps, deserts, tundras, mountains, glaciers, hot springs- from the highest point on Earth along the Himalayan mountain range, to the deepest parts of the sea, tardigrades are there. Less excitingly, they can also be found in your backyard where you can usually find them in common moss, lichens and ferns, feeding on natural detritus in the undergrowth. Although the scientific community has long known about tardigrades (since 1773), it is still somewhat of a mystery how they manage the amazing feat of cryptobiosis, that is, the ability to almost completely halt their metabolic processes, losing up to 97%-99% of their total moisture. When they then encounter water again, they reanimate, with the current record being 120 years to reanimation (though that particular creature simply moved a little and then died when reanimated. But when we go to spans such as 10 years, most tardigrades are able to fully reanimate with no problem.) One of the keys to this hardy creature's success seems to be the presence of a cellular sugar called trehalose which preserves the membranes that form their bodies. Although hardly the answer to human suspended animation, scientists are looking at trehalose as a viable way to preserve human eggs during freezing for later fertilization. In any event, when tardigrades dry up, they become "tuns", little capsules that are easily transported and dispersed over the Earth via the wind, the oceans, or in an animal's gut. (Yes, they can sometimes survive there too.) Besides their dehydration abilities, these little creatures can also go without oxygen for a time and withstand temperatures ranging from well above water's boiling point to nearly absolute zero. (They've been shown to be able to survive as low as 1 degree above absolute zero for several minutes.) Not remarkable enough for you? Tardigrades can also survive as high as 5,000 grays or 500,000 rads of ionizing radiation, though above 100,000 rads does seem to make them sterile. For reference, humans die around a "mere" 1,000-2,000 rads and will suffer significant damage with much less. In order to test some of the tardigrade's amazing abilities, in 2007, the European Space Agency launched the FOTON-M3 spacecraft hurtling a capsule full of science experiments into the heavens. Its subjects included live tardigrades, who returned from space after orbiting Earth for 12 days, all the while being subjected to the near vacuum of space and the full spectra of deadly solar and cosmic radiation. How did the Water Bears hold up? No problem for a large percentage of them. About 68% of them were just fine and kept on amblin' once back on Earth. For reference, besides surviving the near vacuum of space, some species of tardigrade can also withstand up to 6,000 times atmospheric pressure at sea level. This is about 6 times more pressure than at the deepest point in the ocean. I, for one, welcome our new tardigrade overlords. From www.todayifoundout.com.
Views: 76613 Craig Smith
UPDATED RANKING ►► https://wiki.ezvid.com/best-above-ground-pool-vacuums Disclaimer: These choices may be out of date. You need to go to wiki.ezvid.com to see the most recent updates to the list. Our complete review, including our selection for the year's best above ground pool vacuum, is exclusively available on Ezvid Wiki. Above ground pool vacuums included in this wiki include the milliard sea-thru triangle, pentair kreepy krauly, aquabot x4, dolphin escape, zodiac ranger, poolmaster big sucker, water tech pool blaster max, poolsupplytown mini jet vac, hayward aquabug, and aura paradise. Most Recent Picks: https://wiki.ezvid.com/best-above-ground-pool-vacuums
Views: 110 Ezvid Wiki
This video will show you how to easily siphon water off of your pool cover, or out of your pool using a garden hose. -~-~~-~~~-~~-~- Please watch: "Super Clean Free Tee Giveaway - Home Owner Repair " https://www.youtube.com/watch?v=EZJuTZ8rjWM -~-~~-~~~-~~-~-
Views: 453748 Homeowner Repair
So can you really achieve combustion in a vacuum? Yes, but it has to be done a certain way. The question is, can rocket engines, the way they are designed produce combustion in a vacuum? Why or why not? https://www.youtube.com/watch?v=3NJI3ZG6G_U Also, don't forget to watch this one. https://www.youtube.com/watch?v=GxBRQXxBRic Yes, rockets could fly in a vacuum. Look, I am a flat earther, but in order to really believe in the perspective of flat earth, everything has to fit. To deny that we are in orbit, or that rockets could fly in a vacuum is stupid. We are up there. The question is, what are we circling above. Denying simply observable things does more harm than good to the flat earth. So the real question is, how do rockets work over the flat earth, and what is inner space?
Views: 347 Chris Curtis
"Why Does The Boiling Point Of Water Drop With Altitude Watch more videos for more knowledge Why Does The Boiling Point Of Water Drop With ... https://www.youtube.com/watch/ULoUojZNwFc How elevation affects boiling point of water: 7,400 ... https://www.youtube.com/watch/o6G3aucU2c8 Why Is Boiling Point Affected By Altitude - YouTube https://www.youtube.com/watch/JW9SLSJeLCs The Effect of Altitude on Boiling Point and Pressure ... https://www.youtube.com/watch/PGzteRXVkkg Boiling Water at Altitude - YouTube https://www.youtube.com/watch/9zbiyB4f50s How Does Pressure Affect The Boiling Point Of A ... https://www.youtube.com/watch/YohrHv4Gh9w Effect of Pressure on the Boiling Point of Water ... https://www.youtube.com/watch/AFARWpoaSJA What Is The Boiling Point Of Water At Sea Level ... https://www.youtube.com/watch/QOVXiRTyABE How Does Altitude Affect The Freezing Point Of ... https://www.youtube.com/watch/4s4YMfq3zbk Why Does It Take Longer To Boil Water At High ... https://www.youtube.com/watch/swWyUE2mqW0 How Long Does It Take Water To Boil In Denver ... https://www.youtube.com/watch/buJhtL5K32s Atmospheric Pressure and Boiling - YouTube https://www.youtube.com/watch/aiwynTBdln8 Why Does Altitude Affect Temperature? |James May ... https://www.youtube.com/watch/cimgIhtN-AU What Is The Boiling Point Of Water In A Vacuum ... https://www.youtube.com/watch/DlccjkMDfd4 Effect of Air Pressure on Boiling Point of Water ... https://www.youtube.com/watch/1UkkCtcFJso How Do You Change The Boiling Point Of Water ... https://www.youtube.com/watch/18J3x7OQXQo If heat rises, why do higher altitudes have lower ... https://www.youtube.com/watch/2RqmTh3K6yk Vapor Pressure and Boiling - YouTube https://www.youtube.com/watch/ffBusZO-TO0 Boiling Water On Mount Everest! | Earth Lab - YouTube https://www.youtube.com/watch/8lyqFkFsH28 What is the boiling point of water in hindi | How ... https://www.youtube.com/watch/x0z5Sl5iWQA"
Views: 197 S AnswerZ
https://flowdefence.com.au Self contained unit, inlet grates located above the interception chamber and barrier does not need to be removed to clean the sump. Watch the full length video: https://www.youtube.com/watch?v=Ktbh17OyFvE Hydrostatic Fluid Containment System (HFCS) Intellectual Property: WO/2015/120516, AU2015218181, EU2015749524, US14902550 More videos at https://www.youtube.com/c/FlowDefence https://www.flowdefence.com.au [email protected] Flow Defence products are passive flood barriers which require no human intervention to activate. The flood barrier will rise into position from buoyant forces by intercepting flood water at the crest of the driveway (or other ground surface) and storing it in an underground channel before water can enter the underground carpark. Flow Defence (FD) flood barriers intercept floodwater only when it reaches the crest of the driveway and will therefore not open prematurely. With ~10mm of water depth over the 6000mm wide grated inlet, the interception chamber will fill in just over 60seconds raising the barrier whilst filling. Warning lights mounted on either side of the barrier illuminate and flash during operation. SEALING MECHANISM The Flow Defence flood barrier is a self-contained unit where the collection channel also houses the barrier. The barriers sealing operation is all done from the downstream side of the channel which allows full unrestricted access to the upstream side of the barrier for maintenance where optional pre-screening baskets can also be installed. The seals remain above water level as the barrier is displaced and the sealing mechanism becomes watertight before floating debris can be caught between the barrier and sealing frame A key feature of the design are angled lugs that guide the seals during compression and act as a canter lever point by providing a fixed connection between vertical barrier supports and the concrete chamber. This configuration reduces barrier deflection from hydrostatic forces. RETAINED FLOODWATER The FD barrier will remain in the upright position until flood waters recede and the collection channel is drained. The barrier can be lowered using one of three methods: • Submersible pump installed within the FD channel collection sump. This is activated by a float switch, draining the pit automatically and lowering the barrier provided power is still available to the site during a flood event. • The self-siphon system will prime when flood water fills the collection channel. A tamper proof valve (valve with no handle) can be open after flood water recedes. The retained water captured by the FD interception channel will then be drained into the underground carpark (~3,000L) lowering the barrier at the same time. • Any pump on a maintenance vehicle with a suction hose can access the FD interception channel by removing access grates from the property boundary at ground level. Water in the collection chamber can then be discharged to the street kerb or landscaped area while lowering the barrier. MAINTENANCE PROCEDURES Flow Defence flood barriers should be de-sludged using an educator truck after every flood event in which the barrier activates. The barrier is not required to be removed during maintenance. The sealing mechanisms are located below ground level and are out of direct sunlight minimising any environmental or impact hazards. • Advise all concerned parties of the proposed date and time of cleaning. • Obtain approvals from the appropriate authorities. • Prepare necessary Safe Work Method Statements. • Provide barricades in working areas and signs to prevent injuries to public or staff. • Remove inlet grates. • Lower vacuum hose, remove debris and sediment while cleaning all components with a high pressure hose (most Wet Vac combination trucks have this facility). • Remove vacuum hose and replace inlet grates. • Record site location, date and time of clean and duration of clean. INSPECTIONS We believe that the unit life will be enhanced significantly by using Flow Defence staff to monitor and maintain the flood barrier. Flow Defence flood barriers should be inspected (half yearly) and serviced (annually) to ensure they are clean and free from material buildup. 6 Month Inspection: • Interception channel sump inspected for material build up (water, sediment or debris). • Flexible seal and guide frame inspection. • Full maintenance report. • Determine if service is required. Cleaning After Unit Operation: • Remove sludge and sediment using Vac Truck. • Clean components with high pressure spray. • Flexible seal and guide frame inspection. • Full cleaning report. If you require further information or details about our competitive inspection, cleaning and reporting service please contact Flow Defence. https://www.flowdefence.com.au [email protected]
Views: 508 Flow Defence
Best Science Magic Trick Candle & Water Wonderful magic trick that you can do at home ! Water defying gravity , as it fills drinking glass , which is upside down. Ingredients: Plate, candle , lighter, glass of water, food coloring . The text of the video explains the scientific principles . CSAV uses this demonstration to teach school children in science; It is also a great trick you can do birthday parties . Note: This is very similar to the old " CSAV Hawaii : Best Science Magic Trick Water " In addition, the new version has more details about the causes of the formation of a partial vacuum within a glass . viewers asked for more details about how this magic works , so if you want more details , keep reading. First, you must recognize that the air has weight . Above sea level , the air above you put accumulated 14.7 pounds of pressure per square inch ( PSI ) contact surface exposure . Air is made up of several gases , including oxygen , and fire needs oxygen to burn . You can prove it to light a small candle and then place it in a drinking glass ; Candle burning oxygen trapped in the ice, then the flame, because the air outside the window can not be changed . But , as the candle burns up oxygen , carbon dioxide is produced and water vapor , as the candle consisting of paraffinic hydrocarbon ( C25H52 ) . The formula for this reaction : 2 ( C25H52 ) + 38 (2 ) = 25 ( CO2 ) + 26 ( H 2 ) You know that drinking a glass of cold , room temperature , but the candle is hot gases . When the candle by touching a cold drink a glass of steam hot water , it condenses into a liquid . There is no liquid water appears on the very surface of the glass, but the volume change is a wonderful converter liquid to vapor is about 1000 times smaller. When the interior of a drinking glass shrinks , it creates a partial vacuum of space, where there is only very little gas. But the vacuum is visible . The best way to show this gap is for students to repeat the action , but ditch water ( food coloring ) next to the candle . Arstudentebis predict what will happen ; Children tend to think that the flame of the candle draw fresh oxygen to water ( H 2 formula involves O ) , so you need to explain why O is not easily separated from H 2 - lucky thing for firefighters to use water to extinguish the fire . In this second demonstration , to avoid a partial vacuum within a glass , outside air ( 14.7 PSI ) , which pushes down the ditch water, all the water in time to push the . edge of the glass, causing a " challenge gravity " and begin to fill the glass in mind that water does not completely fill the glass has reached equilibrium Most students begin immediately. analyze , how to get more water to increase the glass , a candle , a glass of cold water fun ! -------------------------------------- http://feeds.feedburner.com/Crazy-Boy http://youtu.be/bBS_CacFY50 tags: ----- here, Best, Science, Magic, Trick, Candle, Water, CO2, C25H52, Plate, candle , Justin Willman was in the house to wow our audience with magic! His last trick was a real tweet! Watch it right
Views: 15018 Crazy boy