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2. Flash (photography) - Wikipedia

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

   Video demonstration of high-speed flash photography. A flash is a device used in photography that produces a brief burst of light (lasting around 1⁄200 of a second) at a color temperature of about 5500 K [ 1 ][citation needed] to help illuminate a scene. The main purpose of a flash is to illuminate a dark scene.

3. Flashtube - Wikipedia

   en.wikipedia.org/wiki/Flashtube

   Helical xenon flashtube emitting greybody radiation as white light. (Animated version below.) A flashtube (flashlamp) produces an electrostatic discharge with an extremely intense, incoherent, full-spectrum white light for a very short time. A flashtube is a glass tube with an electrode at each end and is filled with a gas that, when triggered ...

4. Strobe light - Wikipedia

   en.wikipedia.org/wiki/Strobe_light

   Strobe light. Blue Strobe light. A strobe light or stroboscopic lamp, commonly called a strobe, is a device used to produce regular flashes of light. It is one of a number of devices that can be used as a stroboscope. The word originated from the Ancient Greek στρόβος (stróbos), meaning "act of whirling".

5. Stroboscope - Wikipedia

   en.wikipedia.org/wiki/Stroboscope

   A bouncing ball captured with a stroboscopic flash at 25 images per second. A strobe light flashing at the proper period can appear to freeze or reverse cyclical motion. A stroboscope, also known as a strobe, is an instrument used to make a cyclically moving object appear to be slow-moving, or stationary. It consists of either a rotating disk ...

6. Monolight - Wikipedia

   en.wikipedia.org/wiki/Monolight

   Modeling light — A continuous light that illuminates the subject and aids the photographer in composing the picture. Power connector — The receptacle for the power cord. Power switch — A switch to turn the monolight on and off. Slave sensor — A sensor that detects the flashes of other strobes and triggers the strobe of which it is a part.

7. Guide number - Wikipedia

   en.wikipedia.org/wiki/Guide_number

   Definition: In the context of photography, is the measure of the total energy, or quantity, of eye-adjusted visible light that impinged upon a unit area over a specified period of time. In common vernacular, it is the product the brightness of light measured at the surface of a photographic subject times the duration of that light.