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2. Adaptive optics - Wikipedia

   en.wikipedia.org/wiki/Adaptive_optics

   Illustration of a (simplified) adaptive optics system. The light first hits a tip–tilt (TT) mirror and then a deformable mirror (DM) which corrects the wavefront. Part of the light is tapped off by a beamsplitter (BS) to the wavefront sensor and the control hardware which sends updated signals to the DM and TT mirrors.

3. History of the LED - Wikipedia

   en.wikipedia.org/wiki/History_of_the_LED

   LED display of a TI-30 scientific calculator (c. 1978), which uses plastic lenses to increase the visible digit size X-Ray of a 1970s 8-digit LED calculator display. Until 1968, visible and infrared LEDs were extremely costly, on the order of US$200 per unit, and so had little practical use. [23]

4. Light-emitting diode - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode

   One-color light is well suited for traffic lights and signals, exit signs, emergency vehicle lighting, ships' navigation lights, and LED-based Christmas lights Because of their long life, fast switching times, and visibility in broad daylight due to their high output and focus, LEDs have been used in automotive brake lights and turn signals.

5. 9 Best LED Light Masks to Help Achieve Glowing Skin At Home ...

   www.aol.com/9-best-led-light-masks-215900515.html

   Here are the best dermatologist-recommended LED light face masks. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us ...

6. 8 of the Best LED Christmas Lights to Jazz Up Your Roof ... - AOL

   www.aol.com/8-best-led-christmas-lights...

   Christmas lights are the ultimate way to add a festive glow to your home, in. PureWow Editors select every item that appears on this page,, and the company may earn compensation through affiliate ...

7. 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 ...