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The distortion of an uncorrected image projected on
a wall or screen, typically shown to be wider across
the top and shorter across the bottom, resembling a
keystone in a doorway.
An Acronym for kilobyte. A kilobyte is 1,000 bytes.
In computer memory sizes, the numbers are rounded down,
e.g. 1 k byte =1024 bytes.
This is a system or scale used for measuring temperature.
Absolute zero is ( Kelvin or 273 C. The "color"
of white light is expressed in terms of degrees Kelvin,
the color of light emitted when an ideal object is heated
to a particular temperature.
A distorted picture where one edge is not the same dimension
as the opposite edge. The distortion (usually of a wide-top
narrow-bottom effect) of a projected image caused by
improper projector-to-screen angle. Typically results
when the image is projected at an angle. In stone buildings,
the tapered stone as the top of an arch was the "key"
that prevented the arch from falling.
Thousands of Hertz, or a frequency rate in units of
thousands of cycles per second.
A self-contained, stand-alone unit that houses an interactive
system, usually located in a public area.