Pythagorean cup
thingiverse
The Pythagoras Cup has numerous variations, but this one stands out for its simplicity. For an optimal viewing experience, I suggest printing it with a black filament and a transparent finish. Begin by observing the fascinating behavior of the Black Cup as students fill it with water stained with food coloring. Next, fill the cup with clear glass using a transparent filament, allowing them to see the suction system in action. To gain a deeper understanding, consider using the half-cup model available on Thingiverse at https://www.thingiverse.com/thing:3294486.
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