About neutrally buoyant particles, popcorn, and more bubbles
When you see all our pretty images of currents and swirling eddies and everything, what you actually see are the neutrally buoyant particles that get lit by the laser in…
Tag: buoyancy
On buoyancy
This is an experiment that Martin brought to Ratzeburg and that he let me use on my blog: Using a beam balance to talk about buoyancy. So at first we…
Sink or swim – experiments using tin foil
A pet peeve of mine are books on handcrafts or experiments or any kind of activity that come with drawings instead of pictures, because I always suspect that it was…
Which displaces more water, a boat with the anchor onboard or in the water?
Not that this is a big effect in the ocean, but still, it’s a nice demo. A body submerges into the water until it displaces an amount of water that is…
Cartesian divers – theoretical considerations
A bit more reflection on cartesian divers. When I wrote the two previous posts, I had known cartesian divers for a very long time in many contexts, for example as…
Cartesian diver – organic version
Using orange peel as cartesian divers. Guess what my mom told me when we were playing with cartesian divers the other day? That orange peel works really well as a…
Cartesian diver
Compressibility of water and air. Today I want to talk about the different compressibilities of water and air. Actually, no, I just want to show you an experiment. One way…