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Water density3/1/2023 ![]() Yet, in industrial applications water can be tremendously compressed and used to do things like cut through metal (especially if an abrasive material is added to the water and the water is hot). Even with this much pressure, water only compresses less than one percent.Ī waterjet computer-controlled cutting machine using high pressure water to make a decorative pattern in a piece of metal. At that depth, the weight of the water above, pushing downwards, is about 150 times normal atmospheric pressure ( Source: University of Illinois at Urbana-Champaign Ask the Van). Envision the water a mile deep in the ocean. Pressure and temperature can affect compressibilityīut, squeeze hard enough and water will compress-shrink in size and become more dense. Well, I was a kid, how was I to know that the compressibility of water at room temperature is only about 0.000053 for an increase of about 14.7 pounds per square inch in pressure? My theorem was (painfully) disproved, as the water squirted out rather than compress. I thought that since water was trapped in the sponge, I could squeeze the sponge and the water would compress. To test if water compressed, I added some red food color to the water, soaked it up, and sat on my parent's new white carpeting to prove my theorem. I was analyzing the compressibility of water by soaking a sponge with water, smushing it up, and watching how much water came back out. When I was 7 years old, water's incompressibility got me in big trouble. When you squeeze the balloon too much, the balloon's skin will fail before the water inside compresses-it will burst in your face long before the water will compress even an infinitesimal amount. Kids make good use of water's uncompressibility when they play a game of water-balloon tossing. If water was highly compressible, it would be harder to create enough pressure for water to shoot out of the nearest opening In these instances, some pressure is applied to a container full of water and rather than compress, it comes shooting out of an opening, such as the end of the hose or the end of a small pipe, as in this fountain. Water's lack of compressibility helps to push water out of water hoses (handy for putting out fires), water pistols (handy for bothering Dad), and in artistic water fountains (handy for relaxing). Incompressibility is a common property of liquids, but water is especially incompressible. ![]() If the water compressed, it wouldn't "push back" out of the straw. If you fill a sandwich bag with water and put a straw into it, when you squeeze the baggie the water won't compress, but rather will shoot out the straw. Water is essentially incompressible, especially under normal conditions. Water incompressibility allows fire hoses to work, makes hydraulically-driven tools to function, and for kids to have fun running underneath a fountain that shoots out water (under pressure).Ĭredit: Joe Mabel It is hard to "put the squeeze" on water Visit Media to see details.īeing incompressible, water makes a handy and useful tool for people to do work (and have fun). Sources/Usage: Some content may have restrictions.
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