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2. Multi-junction solar cell - Wikipedia

   en.wikipedia.org/wiki/Multi-junction_solar_cell

   The shaded area under the red line represents the maximum work done by ideal infinite multi-junction solar cells. Hence, the limiting efficiency of ideal infinite multi-junction solar cells is evaluated to be 68.8% by comparing the shaded area defined by the red line with the total photon-flux area determined by the black line.

3. Light-emitting diode - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode

   Efficiency: LEDs emit more lumens per watt than incandescent light bulbs. [164] The efficiency of LED lighting fixtures is not affected by shape and size, unlike fluorescent light bulbs or tubes. Size: LEDs can be very small (smaller than 2 mm 2 [ 165 ] ) and are easily attached to printed circuit boards.

4. Full-spectrum light - Wikipedia

   en.wikipedia.org/wiki/Full-spectrum_light

   Full-spectrum light. Full-spectrum light is light that covers the electromagnetic spectrum from infrared to near- ultraviolet, or all wavelengths that are useful to plant or animal life; in particular, sunlight is considered full spectrum, even though the solar spectral distribution reaching Earth changes with time of day, latitude, and ...

5. Light-emitting diode physics - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode_physics

   yellow with red, orange or pink phosphor added afterwards, white with pink plastic, or white phosphors with pink pigment or dye over top. [28] Purple: Multiple wavelengths: 2.48 < ΔV < 3.7: Dual blue/red LEDs, blue with red phosphor, or white with purple plastic White: Broad spectrum: 2.8 < ΔV < 4.2: Cool / Pure White: Blue/UV diode with ...

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. See Inside the Glorious Red Carpet Premiere of “The Color Purple”

   www.aol.com/see-inside-glorious-red-carpet...

   While the movie isn’t hitting theaters quite yet, Oprah, the cast, and more joined together for an official red—well, purple—carpet event in Los Angeles on December 6.

8. Sodium-vapor lamp - Wikipedia

   en.wikipedia.org/wiki/Sodium-vapor_lamp

   A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. Two varieties of such lamps exist: low pressure and high pressure. Low-pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor ...

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