PASCAL'S PRINCIPLE
  • Imagine you could go into this piece of glass, and travel about in the red fluid.
  • When the fluid was poured into the left tube, it filled all 4 tubes up to the same height.
  • If you went to the bottom (horizontal) part of the tube, do you think you would feel more pressure if you were under any specific tube?
  • No, you would not feel any difference.  The pressure you'd feel depends only on your depth... remember the equation Pressure=Dhg.  The equation takes into account only gravity, depth, and the density of the fluid.
  • The particles of the fluid transmit the pressure to neighboring particles throughout the fluid.


  • Blaise Pascal was a really smart guy.  Here is a site made by a fan of his.  It describes some really wild math that Pascal thought about, 300 years ago:   http://members.tripod.com/~absolutebow/ptri2.html