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2. Sodium-vapor lamp - Wikipedia

   en.wikipedia.org/wiki/Sodium-vapor_lamp

   A low-pressure sodium lamp running at full brightness An unlit 35 W LPS/SOX lamp LPS lamp warming up A running 35 W LPS/SOX lamp Spectrum of a low-pressure sodium lamp. The intense yellow band is the atomic sodium D-line emission, comprising about 90% of the visible light emission for this lamp type. Two Honda Fits under low-pressure sodium ...

3. Gas-discharge lamp - Wikipedia

   en.wikipedia.org/wiki/Gas-discharge_lamp

   High-pressure lamps have a discharge that takes place in gas under slightly less to greater than atmospheric pressure. For example, a high pressure sodium lamp has an arc tube under 100 to 200 torr pressure, about 14% to 28% of atmospheric pressure; some automotive HID headlamps have up to 50 bar or fifty times atmospheric pressure. Metal ...

4. High-intensity discharge lamp - Wikipedia

   en.wikipedia.org/wiki/High-intensity_discharge_lamp

   Metal-halide and ceramic metal-halide lamps can be made to give off neutral white light useful for applications where normal color appearance is critical, such as TV and movie production, indoor or nighttime sports games, automotive headlamps, and aquarium lighting. Low-pressure sodium-vapor lamps are extremely efficient.

5. Electric light - Wikipedia

   en.wikipedia.org/wiki/Electric_light

   The most efficient source of electric light is the low-pressure sodium lamp. It produces, for all practical purposes, a monochromatic orange-yellow light, which gives a similarly monochromatic perception of any illuminated scene. For this reason, it is generally reserved for outdoor public lighting applications.

6. Low-pressure sodium lamp - Wikipedia

   en.wikipedia.org/?title=Low-pressure_sodium_lamp&...

   Retrieved from "https://en.wikipedia.org/w/index.php?title=Low-pressure_sodium_lamp&oldid=626264217"https://en.wikipedia.org/w/index.php?title=Low-pressure_sodium_lamp

7. Talk:Sodium-vapor lamp - Wikipedia

   en.wikipedia.org/wiki/Talk:Sodium-vapor_lamp

   Marcello Pirani led the next major advancement in the low pressure sodium lamp. He worked for Osram in Germany where he developed a sodium-resistant glass in 1931. He used an oven to heat the lamp, which vaporized the sodium and started the lamp. 1932 - The first sodium lamps for commercial sale were made by Philips.