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  2. Orders of magnitude (illuminance) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude...

    Shade illuminated by entire clear blue sky, midday 10 5: 100 kilolux 110 kilolux: ... Filament of a clear incandescent lamp [13] 10 8: 100 Mcd/m 2: Possible retinal ...

  3. Timeline of lighting technology - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_lighting...

    Stanley lit 23 businesses along a 4000 feet length of main street stepping a 500 AC volt current at the street down to 100 volts to power incandescent lamps at each location. [7] 1893 GE introduces first commercial fully enclosed carbon arc lamp. Sealed in glass globes, it lasts 100h and therefore 10 times longer than hitherto carbon arc lamps ...

  4. Electrical ballast - Wikipedia

    en.wikipedia.org/wiki/Electrical_ballast

    The top is a rapid start series autoregulator ballast for two 30–40 W lamps. The middle is a preheat reactor ballast for a single 30–40 W lamp while the bottom ballast is a simple inductor used with a 15 W preheat lamp. An American magnetic ballast for signs in an aluminum sign frame.

  5. Lunar Laser Ranging experiments - Wikipedia

    en.wikipedia.org/wiki/Lunar_Laser_Ranging...

    [13] [14] [15] MX-1E was set to launch in July 2020, [16] however, as of February 2020, the launch of the MX-1E has been canceled. [17] India's Chandrayaan-3 lunar lander successfully placed a sixth reflector on the Moon in August 2023. [3] MoonLIGHT will be launched in early 2024 with a Commercial Lunar Payload Services (CLPS) mission. [18]

  6. NYT ‘Connections’ Hints and Answers Today, Sunday, January 12

    www.aol.com/nyt-connections-hints-answers-today...

    Today's Connections Game Answers for Sunday, January 12, 2025: 1. FABRICATION: FAIRY TALE, FANTASY, FICTION, INVENTION 2. WOO: CHARM, COURT, PURSUE, ROMANCE 3 ...

  7. Metal-halide lamp - Wikipedia

    en.wikipedia.org/wiki/Metal-halide_lamp

    In a metal-halide lamp, the compact arc tube contains a mixture of argon or xenon, mercury, and a variety of metal halides, such as sodium iodide and scandium iodide. [7] The particular mixture of metal halides influences the correlated color temperature and intensity (making the light more blue or red, for example). When started, the argon gas ...