Do Radioactive Things Actually Glow Bright Green?

Soda + Mentos in Slow Mo with a High-Speed Robot

Gav of The Slow Mo Guys puts the Phantom in the hands (claw?) of an extremely fast robot to film some classic diet soda reactions from some slightly more advanced angles at 1,000 FPS.

World’s Largest “Elephant Toothpaste” Experiment

NASA scientist Mark Rober tries to break the world record for the most “elephant toothpaste” made at once.

Pouring a Liquid Mirror in 4K Slow Motion

Gav and Dan, aka The Slow Mo Guys, got a hold of some Gallium (like mercury, but much less poison-y).

Nitinol: The Shape Memory Effect and Superelasticity

Bill the engineerguy demonstrates the temperature-dependent shape memory of nitinol metal. He explains how “twinning” in the crystal structure of nitinol produces the memory effect. He shows a nitinol-based engine that is powered by temperature differences. He closes the video with a description of superelasticity, a phenomenon related to the memory effect, which he demonstrates with a cardiac stent.

My Dog Reviews Soap

YouTuber JennaMarbles has a dog who is obsessed with soap, so she did the obvious thing and brought home lots of different kinds of soap to see which one he wants to rub on the hardest. NATCH.

 

Hourglass Filled With Mercury

Don’t try this at home, kids.