The Incandescent Lamp
7:50
The Electric Light Bulb Was Invented Centuries Before Edison
13:22
Lighting Then VS Now: Fire Before Electricity
8:18
The Fluorescent Lamp - How it Works - Inventors
27:59
Bright from the Start: GE's CFL with an incandescent trick up its sleeve
19:41
Professor Eric Laithwaite: Motors Big and Small - 1971
18:17
Restaurez vos vieilles piles AA dès aujourd'hui !
18:56
Why The First Computers Were Made Out Of Light Bulbs
18:34