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2. LED lamp - Wikipedia

   en.wikipedia.org/wiki/LED_lamp

   Learn about LED lamps, electric lights that use light-emitting diodes to produce light efficiently and last longer than other lamps. Find out how LED lamps evolved from red indicators to white general lighting, and how they compare with incandescent, fluorescent and metal-halide lamps.

3. Light-emitting diode - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode

   A light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. The color of the light depends on the energy gap of the semiconductor material. Learn about the history, types, applications, and advantages of LEDs.

4. Headlamp - Wikipedia

   en.wikipedia.org/wiki/Headlamp

   A headlamp is a lamp attached to the front of a vehicle to illuminate the road ahead. Learn about the origins, mechanics and evolution of headlamps, from candles and gas to electric and halogen, and how they differ by region and vehicle type.

5. List of automotive light bulb types - Wikipedia

   en.wikipedia.org/wiki/List_of_automotive_light...

   Find the filament, halogen, HID and LED bulbs used for various lighting applications in vehicles. Compare the specifications, approvals and equivalents of different bulb types according to international and national regulations.

6. AOL Mail

   mail.aol.com

   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. Light-emitting diode physics - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode_physics

   Learn how LEDs produce light by recombination of electrons and holes in a semiconductor, and how the wavelength depends on the band gap energy. Find out how the refractive index, optical coatings and die shape affect the light emission efficiency and color of LEDs.