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2. Light-emitting diode - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode

   Main article: Light-emitting diode physics. In a light-emitting diode, the recombination of electrons and electron holes in a semiconductor produces light (be it infrared, visible or UV), a process called " electroluminescence ". The wavelength of the light depends on the energy band gap of the semiconductors used.

3. Light up Your Workshop or Garage With One of These Editor ...

   www.aol.com/lifestyle/led-shop-lights-best...

   Battery Powered LED Work Light. This portable LED flashlight features a rubberized hand grip for secure handling, a flat bottom to place on work spaces, and an integrated hook to hang in dark ...

4. Light-emitting diode physics - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode_physics

   Light-emitting diodes (LEDs) produce light (or infrared radiation) by the recombination of electrons and electron holes in a semiconductor, a process called "electroluminescence". The wavelength of the light produced depends on the energy band gap of the semiconductors used. Since these materials have a high index of refraction, [note 1] design ...

5. Red Light Therapy: Effectiveness, Treatment, and Risks - WebMD

   www.webmd.com/.../red-light-therapy

   Red light therapy is a treatment that may help skin, muscle tissue, and other parts of your body heal. It uses low levels of red light to target your skin and cells. It is thought to work by ...

6. LED Light Facial: Skin Conditions and Safety - WebMD

   www.webmd.com/beauty/what-is-led-light-therapy...

   These help make collagen, which are important parts of skin recovery. Some studies have found that red LED light therapy tightens skin, reduces wrinkles and fine lines, and makes skin smoother and ...

7. Wish Your Teeth Were Whiter? Learn About LED Tooth Whitening

   www.webmd.com/oral-health/features/what-is-tooth...

   Even if LED lights speed up the whitening process by only a small amount, the added convenience is undeniable. LED lights show promise when it comes to making the most of whitening results. The ...