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2. Flashlight - Wikipedia

   en.wikipedia.org/wiki/Flashlight

   In 1999, Lumileds Corporation of San Jose, California, introduced the Luxeon LED, a high-power white-light emitter. This made possible LED flashlights with lower power consumption and running time better than incandescent flashlights with similar light output. The first Luxeon LED flashlight was the Arc LS, designed in 2001.

3. List of battery sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_battery_sizes

   Used in some lighted watches and some LED decorator lights (electronic tea candles). CR1220: 5012LC: 35–40: 0.1 (CR) 0.03 (BR) 12.5 × 2.0 Used in keychain LED flashlights, and in some digital cameras to keep the time and date function running even when the main battery is taken out of the camera. [146] [147] CR1225: 5020LC: 50: 0.2: 12.5 × 2.5

4. LED circuit - Wikipedia

   en.wikipedia.org/wiki/LED_circuit

   and the LED's light frequency (which we perceive as color) increase with the band gap of the LED's materials. Consequently, V f {\displaystyle V_{f}} ranges from around 1.7 to 2.0 volts for red LEDs to around 2.8 to 4.0 volts for violet LEDs.

5. 31 of the best gifts for people who drive a lot - AOL

   www.aol.com/lifestyle/gifts-for-people-who-drive...

   Car LED Interior Lights. $17 at Amazon. Expandable Car Clothes Hanger Bar. ... Just grab your ThisWorx car vac from the trunk, plug it into the car’s 12-volt outlet and clean like a pro. Thanks ...

6. VRB-25 - Wikipedia

   en.wikipedia.org/wiki/VRB-25

   In the 2010s, LED lamps began replacing incandescent lamps in lighthouse applications, [4] so it seems likely the twenty year replacement will use an LED light source. In fact, several VLB-44 LED beacons, [5] also made by Vega Industries, have been installed by the USCG at several locations, including White Island Light [4] and Wood Island Light. [6]

7. Luminous flux - Wikipedia

   en.wikipedia.org/wiki/Luminous_flux

   Table of comparative luminous flux of several light sources [7] [8] [9] Source Luminous flux (lumens) 37 mW "Superbright" white LED: 0.20 15 mW green laser (532 nm wavelength) 8.4 1 W high-output white LED: 25–120 Kerosene lantern: 100 40 W incandescent lamp at 230 volts: 325 7 W high-output white LED: 450 6 W COB filament LED lamp: 600 18 W ...