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The Human Eye In Space Human visual hardware is a result of a billion years of evolution within the earths atmosphere where light is scattered by molecules of air,
The Human Eye in Space Human visual hardware is a result of a billion years of evolution within the earths atmosphere where light is scattered by molecules of air,
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Environmental Process ? Human Spatial Behaviour Current Social Issues Environmental Process ? Human Spatial Behaviour -by Smita Ramachandran- Anthropologist Edward
Submitted by oppapers on January 24, 2000
Category: Science
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Human visual hardware is a result of a billion years
of evolution within the earths atmosphere where
light is scattered by molecules of air, moisture,
particular matter etc. However as we ascend into
our atmosphere with decrease density, light
distribution is changed resulting in our visual
hardware receiving visual data in different format.
Some Aspects to Consider: 1. Visual acuity is the
degree to which the details and contours of
objects are perceived. Visual acuity is usually
defined in terms of minimum separable.Large
variety of factors influence this complex
phenomenon which includes : # Optical factors-
state of the image forming mechanisms of the eye.
# Retinal factors such as the state of the cones. #
Stimulus factors such as illumination, brightness of
the stimulus, contrast between the stimulus and
background, length of time exposed to the
stimulus. * Minimum separable: shortest distance
by which two lines can be separated and still be
perceived as two lines. "During the day, the earth
has a predominantly bluish cast..... I could detect
individual houses and streets in the low humidity
and cloudless areas such as the Himalaya
mountain area.... I saw a steam locomotive by
seeing the smoke first..... I also saw the wake of a
boat on a large river in the Burma-India area...
and a bright orange light from the British oil
refinery to the south of the city (Perth,Australia.)"
The above observation was made by Gordon
Cooper in Faith 7 [1963] and which generated
much skepticism in the light of the thesis by
Muckler and Narvan "Visual Surveillance and
Reconnaissance from space vehicles" in which
they determined that a visual angle of ten minutes
was the operational minimum, and that the
minimum resolvable object...
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223, October 11, 2008
Grader: oppapers, Grade: F-
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