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.
The problem of flickering exists only when using the bulb in combination with magnetic ballast (electronic ballasts produce flicker-free light). HMI bulbs (running with magnetic ballast) present an inherent problem of possibly producing light on film or video with a noticeable flicker. This is caused by the method by which the unit produces light.
In order for the light beam to be received by the monitor, the remote control had to be directed towards one of the four photocells. The system responded to full-spectrum light so it could be activated or interfered with by other light sources including indoor light bulbs and the sun. Despite these defects, the Flash-matic remained in high demand.
Former ESPN NBA insider Adrian Wojnarowski revealed in a Sports Illustrated profile that he was diagnosed with prostate cancer in March, months before his stunning retirement.. A line in ...
No. 3 Iowa State continues to gain recognition as a likely national championship contender after a stellar start to the season. Tamin Lipsey is gaining more and more recognition, too.
A similar stroboscopic effect is now commonly observed by people eating crunchy foods, such as carrots, while watching TV: the image appears to shimmer. [7] The crunching vibrates the eyes at a multiple of the frame rate of the TV. Besides vibrations of the eyes, the effect can be produced by observing wheels via a vibrating mirror.
Lindsay Clancy, the Massachusetts mother accused of strangling her three young children to death before attempting to kill herself, is seeking an insanity defense, court records show.
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 .