Search results
Results from the WOW.Com Content Network
The flicker of a CRT monitor can cause various symptoms in those sensitive to it such as eye strain, headaches [9] in migraine sufferers, and seizures in epileptics. [10]As the flicker is most clearly seen at the edge of our vision there is no obvious risk in using a CRT, but prolonged use can cause a sort of retinal shock where the flickering is seen even when looking away from the monitor.
Flicker vertigo, sometimes called the Bucha effect, is "an imbalance in brain-cell activity caused by exposure to low-frequency flickering (or flashing) of a relatively bright light." [1] It is a disorientation-, vertigo-, and nausea-inducing effect of a strobe light flashing at 1 Hz to 20 Hz, approximately the frequency of human brainwaves.
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.
LCD-LED (light emitting diodes): This most common, and least expensive TV screen technology is comprised of a liquid crystal display panel backlit by an array of tiny but bright LEDs, often ...
Television has traditionally been the most common source of seizures in PSE. For people with PSE, it is especially hazardous to view television in a dark room, at close range, or when the television is out of adjustment and is showing a rapidly flickering image (as when the horizontal hold is incorrectly adjusted on analog television sets).
Here Today, Gone Tomorrow. If your vision of the Big Apple still includes bright yellow taxi cabs, flashing lights, and a phone booth on every corner, it's time to recalibrate.
[73] [74] The problems are characterized by a blank, staticky, or grayscale video output with a proper functioning audio output and no flashing red lights on the console. The complete video failure is sometimes preceded by other graphical glitches such as an irregular saturation of green and/or red colors.
Mintz’s devotion to the couple was so all-encompassing that he even installed a dedicated John and Yoko phone line, which was attached to a blinking red light in the ceiling of his bedroom to ...