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2. Light-emitting diode - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode

   Efficiency: LEDs emit more lumens per watt than incandescent light bulbs. [63] 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 [64]) and are easily attached to printed circuit boards.

3. LED lamp - Wikipedia

   en.wikipedia.org/wiki/LED_lamp

   A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...

4. Lemon battery - Wikipedia

   en.wikipedia.org/wiki/Lemon_battery

   Note that incandescent light bulbs from flashlights are not used because the lemon battery is not designed to produce enough electric current to light them. Such a battery typically produces 0.001 A (1 mA) of current at a potential difference of 0.7 V; these values are multiplied together to determine the overall power of 0.0007 W (0.7 mW).

5. Phase-out of incandescent light bulbs - Wikipedia

   en.wikipedia.org/wiki/Phase-out_of_incandescent...

   LED lamps radiate much less heat than other technologies, and can be either multi-directional or unidirectional, eliminating the need for a mirrored reflector in the bulb or fixture. [21] LED lamps can emit saturated colored light. Disadvantages include spectrum limitations due to discrete emission colors.

6. 30 Surprising Ways Nature Helped Us Create Everyday Items - AOL

   www.aol.com/lifestyle/30-objects-were-directly...

   #15 LED Light Bulbs Fireflies help make LED light bulbs more efficient. The bugs' lanterns have microstructures, or asymmetrical microscopic projections, that release light.

7. Light-emitting diode physics - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode_physics

   A LED is a long-lived light source, but certain mechanisms can cause slow loss of efficiency of the device or sudden failure. The wavelength of the light emitted is a function of the band gap of the semiconductor material used; materials such as gallium arsenide , and others , with various trace doping elements , are used to produce different ...