Jellyfish Diver (TEDCO)

Science Fun!  A Cartesian diver or Cartesian devil is a classic science experiment, named for René Descartes, which demonstrates the principle of buoyancy (Archimedes’ principle) and the "ideal gas law". René Descartes is said to have invented the toy.

Add Jellyfish to a bottle of clean water and perform amazing tricks! Subtle changes in water pressure cause Jellyfish to move up and down a sealed bottle.  Check out the video below.  For ages 5+.

https://www.youtube.com/watch?v=XOtgKkQ0s-M