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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. High-intensity discharge lamp - Wikipedia

   en.wikipedia.org/wiki/High-intensity_discharge_lamp

   Low-pressure sodium-vapor lamps are extremely efficient. They produce a deep yellow-orange light and have an effective CRI of nearly zero; items viewed under their light appear monochromatic. This makes them particularly effective as photographic safelights. High-pressure sodium lamps tend to produce a much whiter light, but still with a ...

4. Gas-discharge lamp - Wikipedia

   en.wikipedia.org/wiki/Gas-discharge_lamp

   A flicker light bulb, flicker flame light bulb or flicker glow lamp is a gas-discharge lamp which produces light by ionizing a gas, usually neon mixed with helium and a small amount of nitrogen gas, by an electric current passing through two flame shaped electrode screens coated with partially decomposed barium azide. The ionized gas moves ...

5. History of street lighting in the United States - Wikipedia

   en.wikipedia.org/wiki/History_of_street_lighting...

   Low-pressure sodium vapor street lights produce a strong monochromatic yellow light, which also reveals more detail to the human eye, even at low levels of luminance. In the 1930s, sodium vapor lamps were not efficient enough to make them a compelling alternative to incandescents.

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

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