Red sprites, secondary jets and newly discovered green afterglow called "ghosts" triggered by red sprites. A dozen vibrant red sprites were recorded on this evening and only two events had the green afterglow.... continue reading

posted by newtboy 1 year 9 months 3 weeks ago • 978 views • 2:32

Aluminum Oxynitride (AlON) is a ceramic composed of aluminium, oxygen and nitrogen

posted by newtboy 4 years 3 months ago • 1,125 views • 4:03

Youtube: Modern cities are designed for cars. But the city of Barcelona is testing out an urban design trick that can give cities back to pedestrians.

posted by RedSky 5 years 7 months 3 weeks ago • 813 views • 5:31

His girlfriend is a hell of a good sport. ------------------------------------------------------------ I made a freeze ray! Im basically a bonafide evil genius now. Freeze your cat, girlfriend, or... continue reading

posted by Mordhaus 5 years 9 months 2 weeks ago • 35 views • 4:36

YouTube description: What happens when you pour liquid nitrogen on a flame? What about when you blow on the flame with a cup in the way? Try these five unusual ways to extinguish a candle. Pour out... continue reading

posted by Aard Vark (oritteropo) 6 years 3 months ago • 270 views • 5:17

A Mobius strip is one of the best ways to demonstrate both the attractive as well as repulsive forces at work with superconducting magnets. Also one of the best explanations of superconducting magnets... continue reading

posted by nock 8 years 10 months 3 weeks ago • 491 views • 7:30

Sixty Symbols

posted by BoneRemake 1 decade 9 months 3 weeks ago • 958 views • 9:17