This is so addicting! One more time? 😉 For step-by-step instructions go here: https://mel.sc/sOE/ For cool and safe experiments to do at home, sign up for MEL Science here: https://mel.sc/sOF/ | MEL Science

Reverse Cartesian Diver https://physicsfunshop.com/ Physics puzzle: On the left is a Cartesian diver- pressing on the bottle forces water into the glass diver, which then compresses the bubble in diver’s head allowing it to sink. On the right is a reverse Cartesian diver- again the bottle is pinched but this time the diver ascends- why? (See video in comments for hint) ➡️ Follow the linkabove for info on how to make this device and find other amazing items featured here on Physicsfun | Physicsfu

Cartesian Divers: increasing pressure on the water compresses the air bubbles in the small glass vials filling them further with water making them sink. Pascal’s principle states that any change in pressure on an enclosed fluid (such as pushing on the rubber cover) is transmitted evenly to every part of the fluid- the physics of hydraulic brakes! Named after the physicist and philosopher Rene Descartes. ➡️ Follow the link in my profile for info on where to get many of the amazing items featured