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Watch the rise and fall of hot and cold fluids.
Use soap film to model a cell membrane.
Make a reverse Cartesian diver.
Polarized light passing through sugar water reveals beautiful colors.
A balloon acts as a lens to focus sound.
Substitute coins for radiation.
Make the liquid in this toy rise and fall in a cycle.
Start your own electric flea circus.
A dipping bird seems to go forever—but it's not perpetual motion.
As René Descartes (almost) said, "I sink, therefore I am."
When a piece of iron gets too hot, it loses its attraction to a magnet.
"Cold" metal and "warm" wood may be the same temperature.
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