McGraw Edison 175watt Mercury Vapor Area Light
34:02
Regent 70watt High Pressure Sodium Mini Area Light
33:20
Creating a Mini Mercury Vapor Low Bay Light Fixture! - 43
24:33
Fun with Transistors
16:20
A General Electric Power/Bracket in 400W Mercury Vapor
6:39
Iwasaki H100 mercury vapor lamp
13:54
The High Pressure Sodium Light: Ubiquitous, effective, but good?
26:09
Testing New SUPER LASERS... These will take over the maker industry!
27:46