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2. Photographic lighting - Wikipedia

   en.wikipedia.org/wiki/Photographic_lighting

   The light was warmed with an orange gel to match the sunset. Photographic lighting refers to how a light source, artificial or natural, illuminates the scene or subject that is photographed. Photographers can manipulate the positioning and the quality of a light source to create visual effects, potentially changing aspects of the photograph ...

3. Photoluminescence - Wikipedia

   en.wikipedia.org/wiki/Photoluminescence

   Photoluminescence (abbreviated as PL) is light emission from any form of matter after the absorption of photons (electromagnetic radiation). [1] It is one of many forms of luminescence (light emission) and is initiated by photoexcitation (i.e. photons that excite electrons to a higher energy level in an atom), hence the prefix photo-. [2]

4. 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 ...

5. How to upgrade your at-home videoconference setup: Lighting ...

   techcrunch.com/2020/05/29/how-to-upgrade-your-at...

   Two-point lighting. A very basic, but effective video lighting setup involves positioning not just one, but two lights pointed toward your face behind, or parallel with your camera. Instead of ...

6. Flash (photography) - Wikipedia

   en.wikipedia.org/wiki/Flash_(photography)

   A flash is a device used in photography that produces a brief burst of light (typically lasting 1⁄1000 to 1⁄200 of a second) at a color temperature of about 5,500 K (5,230 °C; 9,440 °F) [1] [citation needed] to help illuminate a scene. A major purpose of a flash is to illuminate a dark scene.

7. Light-emitting diode - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode

   The flat bottom surfaces of the anvil and post embedded inside the epoxy act as anchors, to prevent the conductors from being forcefully pulled out via mechanical strain or vibration. A light-emitting diode ( LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron ...