The Low Pressure Sodium Lamp
4:25
Homemade sodium-vapor lamp LPS (first attempt)
12:03
THIS LAMP SOXs! "Yellow" tech of bright metal vapor lamp. Beats modern LEDs in brightness per watt?
7:52
The High Pressure Sodium Lamp (HPS)
13:54
The High Pressure Sodium Light: Ubiquitous, effective, but good?
29:08
How the gas mantle made lamps 10X brighter
15:39
How HID BULBS/LAMPS AND BALLASTS Work- Metal Halide, High Pressure Sodium, & Mercury Vapor
5:20
How to Wire High Pressure Sodium Lamps?
21:40