• Gormadt@lemmy.blahaj.zoneOP
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      3 hours ago

      Depends on what you mean by “press” really

      Moving your foot through a gas will displace the gas, and there will be a (albiet small) pressure difference around the foot as it moves through the gas. An increase on the side in direction of movement, a decrease on the opposite side of direction of movement, and some vortices on the sides.

      Basically a very poorly designed wing.

    • b34k@lemmy.world
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      8 hours ago

      I can imagine a scenario where you a gas is encased in a volume that you can reduce by stepping on it with your foot, thus pressurizing it.