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IMA Chapter 5 Terms
terms and definitions
26
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02/15/2007

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Term
Additive Color Process
Definition
Method of creating color by mixing various proportions of two or three distinct colors of light.
Term
Amplitude
Definition
Degree of brightness.
Term
Candela
Definition
Basic unit of luminous intensity.
Term
Electromagnetic Spectrum
Definition
Made up of seven parts in which visible light is only one. Radio waves, Microwaves, Infrared, Visible, Ultraviolet, X-rays, and Gamma.
Term
Foot Candle
Definition
Measure of light intensity or reflected light.
Term
Gamma Rays
Definition
Highest frequencey waves represented in the EM spectrum.
Term
Hue
Definition
Color, dominant wavelength present in light or the reflection of which that is perceived.
Term
Infrared waves
Definition
Most closely associated with thermal energy.
Term
Lumen
Definition
Indicates the output of light from a source.
Term
Lux
Definition
deignation for light demonstrating a standard illumination of one lumen per square meter.
Term
Maritime
Definition
Limitation of wireless radios that where only capable of broadcasting in morse code.
Term
Microwaves
Definition
Predominantly used to heat cuisine and support innumberable pager and cell phone transmissions in the course of a day.
Term
Photon
Definition
individual light particles interacting with individual atoms or molecules of matter they contact.
Term
Pigment
Definition
A filter that absorbs certain colors.
Term
Radiowaves
Definition
Have a low frequency and a long wavelength, prevelant in day to day life.
Term
Saturation
Definition
The amount of light concentrated at a particular wavelength.
Term
Speed of light
Definition
139,809 miles per second.
Term
Subtractive color process
Definition
Concerned with pigments and absorption of color.
Term
Temperature
Definition
Level of perceived whiteness.
Term
Ultraviolet Rays
Definition
Surpass visible light to the right along the EM spectrum. UVC, UVB, UVA
Term
UVA
Definition
plays substantial role in skin damage, penetrates deeper into the skin and cannot be deterred by glass.
Term
UVB
Definition
affects outer layer of skin, primarly responsible for sunburns, cannot penetrate glass.
Term
UVC
Definition
almost completely intercepted by the ozone layer and does not have any effect on the skin.
Term
Visible light
Definition
Everything seen by the human eye is within the range of visible light.
Term
Wireless telephony
Definition
What Nikola Tesla foresaw before creating his prototype of the radio in 1895
Term
X-rays
Definition
type of EM radiation with a very short wavelength and high frequency.
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