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Re: Most Powerful FIRST Team created T-Shirt Cannon
Quote:
Originally Posted by sdcantrell56
Water is most definitely incompressible.
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Quote:
Originally Posted by John_1102
Umm Yeah the principle of compressing water has to happen other wise when you put your finger over the end of a hose nothing would happen. Water is compressable. 1000psi water jets are used to cut steel.....so again logic isn't following here. It's compressable to a very very small degree.
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You are both mistaken.
SDCantrell - Water will compress when you press upon it, just like every ordinary real material will. However, as John said, it compresses very little, and for that reason pretending it is incompressible is a useful approximation.
John - Water's compression has nothing (or at least very little) to do with whether a 1000psi waterjet can cut something. That pressurized water will fly out of a nozzle and cut things is a separate topic from how much or how little it's volume changes when it is put under pressure.
Blake
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