Taking apart a very nice deep-UV flashlight (365nm)
22:59
Fixing a faulty ice maker
23:35
High voltage LED tester with VERY clever circuitry (and hidden features)
17:04
TOO BRIGHT Car Headlamps!?! | Laser LEP vs. LED vs. Halogen | Stronger than Sunlight
28:31
Accelerating Gallium Ions to 0.056% light speed
22:33
Potassium hydroxide and carbonate from wood ashes.
15:10
Hacking an annoying flashlight into something useful (PWJ255)
13:50
Building an Electric Bike Without Electronics
10:53