The High Pressure Sodium Lamp (HPS)
13:54
The High Pressure Sodium Light: Ubiquitous, effective, but good?
8:18
The Metal Halide Lamp (MH)
15:08
More vaguely-informative ramblings about low pressure sodium lamps
18:53
Who Invented The Light Bulb?
18:05
Light sucking flames look like magic
12:10
The Unexpected Genius of Dimpled Propellers
13:59
O Grande Engano Sobre a Eletricidade
12:25