Bizarre traveling flame discovery
11
votes
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When you make a mathematical knot using elastic material you get jumping loops, and challenging puzzles
8 votes -
The bizarre patterns that emerge when you heat any fluid
11 votes -
Watch gravity pull two metal balls together
9 votes -
If you try to pass a bouncy ball under a table, if it hits the underside of the table it will just bounce back out the way it came
8 votes -
The golf ball paradox
11 votes -
Steffen's polyhedron is a flexible concave polyhedron. Euler thought such a shape was impossible. I also show infinitesimally flexible polyhedrons and bistable polyhedrons.
13 votes -
The spool paradox
4 votes -
Wire EDM is an insanely precise manufacturing method. But there's a trick behind these objects that appear to have no seam.
7 votes -
Can water solve a maze?
11 votes -
This microscope uses touch. Gelsight is a microscope that presses gel into the object of study.
9 votes -
The turntable paradox: A ball on a spinning turntable won't fly off as you might expect. In fact the ball will have it's own little orbit exactly 2/7th the angular speed of the table. Here's why.
6 votes -
Logic gates made of DNA beat me at tic-tac-toe
5 votes -
How petrol pumps know when to turn themselves off
10 votes -
Penrose Unilluminable Room is a room with mirrored walls that can't be fully illuminated by a single point source of light
3 votes -
Electric kettles turn off automatically when the water starts to boil. So what happens when you boil alcohol that has a lower boiling point?
6 votes -
Fractal ink jets that power spiral motion
2 votes -
The spring paradox
4 votes -
The Mould Effect: A new theory
7 votes -
Why your pee looks like a chain
10 votes -
Laser + mirror + sound — Visualizing sound waves with a laser
6 votes -
Why PVC cement spins like crazy in water
5 votes -
The self-levitating Kingsbury aerodynamic bearing
9 votes -
Revealing motion invisible to the naked eye using Motion Amplification and Video Magnification
6 votes -
Piezoelectricity - Why hitting crystals makes electricity
7 votes