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In visual perception, flicker is a human-visible change in luminance of an illuminated surface or light source which can be due to fluctuations of the light source itself, or due to external causes such as due to rapid fluctuations in the voltage of the power supply (power-line flicker) or incompatibility with an external dimmer.
A backlight is a form of illumination used in liquid-crystal displays (LCDs) that provides illumination from the back or side of a display panel. LCDs do not produce light by themselves, so they need illumination (ambient light or a special light source) to produce a visible image.
"Button, Button" is the second segment of the 20th episode of the first season of the revival of the television series The Twilight Zone. The segment is based on the 1970 short story of the same name by Richard Matheson; the same short story forms the basis of the 2009 film The Box.
I am having an electrical problem with my 2008 Nissan Altima — all the lights on the dashboard flicker on and off at random times.
A common dual dimmer module used in stage lighting A dimmer. A dimmer is a device connected to a light fixture and used to lower the brightness of the light. By changing the voltage waveform applied to the lamp, it is possible to lower the intensity of the light output.
Most modern ballasts are now also equipped with a dimmer, which uses pulse-width modulation to dim the lamp up to 50%, or as much as one stop of light. Unlike a tungsten-based light, which has a negative color temperature shift with a drop in power, the mercury emission spectra takes over with a drop in power (approximately 200 K bluer at 50% ...
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In my work, the bond between dogs and their environment is presented in an intimate way. Each image tells the story of a dog in harmony with its surroundings, whether it is a mystical forest or a ...