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2. LED lamp - Wikipedia

   en.wikipedia.org/wiki/LED_lamp

   LED lamp - Wikipedia ... LED lamp

3. Navigation light - Wikipedia

   en.wikipedia.org/wiki/Navigation_light

   Navigation light

4. Bulbous bow - Wikipedia

   en.wikipedia.org/wiki/Bulbous_bow

   Bulbous bow - Wikipedia ... Bulbous bow

5. Viking ship - Wikipedia

   en.wikipedia.org/wiki/Viking_ship

   Viking ship - Wikipedia ... Viking ship

6. 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 ...

7. LED filament - Wikipedia

   en.wikipedia.org/wiki/LED_filament

   A 230-volt LED filament light bulb, with a B22 base. The filaments are visible as the four yellow vertical lines. A LED filament light bulb is a LED lamp which is designed to resemble a traditional incandescent light bulb with visible filaments for aesthetic and light distribution purposes, but with the high efficiency of light-emitting diodes (LEDs).