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This is a list of sources of light, the visible part of the electromagnetic spectrum.Light sources produce photons from another energy source, such as heat, chemical reactions, or conversion of mass or a different frequency of electromagnetic energy, and include light bulbs and stars like the Sun. Reflectors (such as the moon, cat's eyes, and mirrors) do not actually produce the light that ...
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 ...
In physics, the term "light" may refer more broadly to electromagnetic radiation of any wavelength, whether visible or not. [ 4 ][ 5 ] In this sense, gamma rays, X-rays, microwaves and radio waves are also light. The primary properties of light are intensity, propagation direction, frequency or wavelength spectrum, and polarization.
Color temperature for white light sources also affects their use for certain applications. The color temperature of a white light source is the temperature in kelvins of a theoretical black body emitter that most closely matches the spectral characteristics (spectral power distribution) of the lamp. An incandescent bulb has a color temperature ...
List of brightest natural objects in the sky. List of brightest stars. Stellar corona. STEVE. Sun. Sunlight. Supernova. List of supernova remnants. Swedish torch.
Three-point lighting is a standard method used in visual media such as theatre, video, film, still photography, computer-generated imagery and 3D computer graphics. [1] By using three separate positions, the photographer can illuminate the shot's subject (such as a person) however desired, while also controlling (or eliminating) the shading and ...
Available light. Photography of the sound reinforcement system prior to a pop concert, wherein the room was mainly dark except the blue spotlight. Though the exposure time of 1⁄4 second at 180 mm focal length (equivalent to 35 mm film) would typically result in a relatively strong blur, the image is quite sharp which is the result of the ...
Many different units of measure are used for photometric measurements. The adjective "bright" can refer to a light source which delivers a high luminous flux (measured in lumens), or to a light source which concentrates the luminous flux it has into a very narrow beam (candelas), or to a light source that is seen against a dark background.