The three ingredients of appearance recognition
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02-00-01
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The Light
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The Light is something that makes things visible or affords illumination. All colors depend on light.
After looking at small color samples and selecting a wallpaper which looks good, people sometimes find
that it looks too bright when it is actually hung on the wall. Colors covering a large area tend
to appear brighter and more vivid than colors covering a smaller area. This is referred to as area effect. |
Object
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Anything that is visible or tangible and is stable in form is a so-called Object. Selecting Objects which will have
a large area based on color samples having a small area may result in mistakes. |
Observer
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An Observer is a person or thing that observes. The Sensitivity of each individual's Eye is slightly different;
even for people considered to have "normal
color vision" , there may be some bias toward red and blue. Also,
person's eyesight generally changes with age. Because of these factors, colors will appear differently to each observer. |
The Physics of Light
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Light is an Electromagnetic radiation to which the organs of sight react ranging in wavelength from about 4000
to 7000"Ångström units" and is propagated at a speed of about 300,000
kilometers per second. |
White Light
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White Light is composed of Electromagnetic vibrations, the wavelengths of which are evenly distributed from 40 to 70
"millionths of a centimeter". If the intensity of these vibrations is strong ( great amplitude ) the Light
is white; if the intensity is less, the Light is weak and if the intensity is zero, the Light is non-existent or black. |
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EXPLANATION |
| "normal
color vision" |
See The Human Eye's Blindness
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| "Ångström
units" |
A unit of length, equal to one tenth of a "millimicron"
or one ten-millionth of a millimeter,
primarily used to express electromagnetic wavelengths.
Named after A.J. Ångström. |
02-00-02
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Ångström, Anders, Jonas
(Swedish physicist)
b-1814-08-13
Lögdö Sweden
d-1874-06-21
Uppsala Sweden
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| "
millionths of a centimeter" |
Equal to 10-8 meter. ( 0.00 000 001 meter) |
| "
millimicron"
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Equal to 10-9
meter or one nanometer. ( 0.000 000 001 meter) |
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Length Conversion |
1 nm = 10-9 m = 10-6 mm = 10-3 µm
1 µm = 10-6 m = 10-3 mm = 1000 nm |
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