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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.
Screen tearing[1] is a visual artifact in video display where a display device shows information from multiple frames in a single screen draw. [2] The artifact occurs when the video feed to the device is not synchronized with the display's refresh rate. That can be caused by non-matching refresh rates, and the tear line then moves as the phase ...
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 .
A cursor is a name given to the transparent slide engraved with a hairline used to mark a point on a slide rule. The term was then transferred to computers through analogy. Cursor on a slide rule. On 14 November 1963, while attending a conference on computer graphics in Reno, Nevada, Douglas Engelbart of Augmentation Research Center (ARC) first ...
The history of the graphical user interface, understood as the use of graphic icons and a pointing device to control a computer, covers a five-decade span of incremental refinements, built on some constant core principles. Several vendors have created their own windowing systems based on independent code, but with basic elements in common that ...
A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers. Liquid crystals do not emit light directly [1] but instead use a backlight or reflector to produce images in color or monochrome.
A widget being added to the Dashboard in Mac OS X 10.4. Shown here is the ripple effect. Aqua makes heavy use of animation. Examples include: Dock icons bounce up and down as their corresponding applications are launched. Dock icons also bounce up and down, in a different rhythm, when a background application requires the user's attention.
Moiré pattern appearing on scaled camera captures of LCD screen Moiré pattern of double layered shading net In mathematics, physics, and art, moiré patterns ( UK : / ˈ m w ɑː r eɪ / MWAH -ray , US : / m w ɑː ˈ r eɪ / mwah- RAY , [ 1 ] French: [mwaʁe] ⓘ ) or moiré fringes [ 2 ] are large-scale interference patterns that can be ...