Mark Rober shows how easily germs can spread using blacklight reactive powder and a classroom of kids.

posted by w1ndex 2 months 1 week ago • 197 views • 10:21

The Lahti L-39 is a Finnish 20 mm anti-tank rifle used during the Second World War. It had excellent accuracy, penetration and range, but its size made transportation difficult. It was nicknamed "Norsupyssy"... continue reading

posted by Mordhaus 3 years ago • 92 views • 10:14

Caesium is an alkali metal and has physical and chemical properties similar to those of rubidium and potassium. The metal is extremely reactive and pyrophoric, reacting with water even at −116 °C (−177... continue reading

posted by Mordhaus 3 years 2 months 4 weeks ago • 707 views • 7:36

I teamed up with Cody, from Cody’s Lab, to experiment and see what would happen if Sodium Metal got flushed down the toilet.

posted by Mordhaus 3 years 6 months 1 week ago • 27 views • 5:20

In this video we show Safety Matches lit with Sulfuric acid. Concentrated sulfuric acid found in drain cleaner may be used. What's happening is the sulfuric acid reacts with potassium chlorate to produce... continue reading