According to the retinex theory of color vision, we perceive color by
A)the ratio between the rate of firing by the cones and by the rods in the retina.
B)varying levels of activity by the three types of cones.
C)comparing light patterns in different parts of the retina.
D) a red-green system and a yellow-blue system
According to the retinex theory of color vision, we perceive color by
A)the ratio between the rate of firing by the cones and by the rods in the retina. | ||
B)varying levels of activity by the three types of cones. | ||
C)comparing light patterns in different parts of the retina. | ||
D) | a red-green system and a yellow-blue system |
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wavelength of the light increases | ||
wavelength of the light decreases | ||
amplitude of the light increases | ||
amplitude of the light decreases |
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wavelength of the light increases | ||
wavelength of the light decreases | ||
amplitude of the light increases | ||
amplitude of the light decreases |
We perceive an increase in intensity when
wavelength of the light increases | ||
wavelength of the light decreases | ||
amplitude of the light increases | ||
amplitude of the light decreases |
A ratio of light reaching a surface to light leaving asurface.
Illuminance | ||
Illumination | ||
Luminance | ||
Luminous flux | ||
Luminous intensity | ||
Reflectance |
A measure of the visible light emitted in all directions
Illuminance | ||
Illumination | ||
Luminance | ||
Luminous flux | ||
Luminous intensity | ||
Reflectance |
Unit of measure is the lumen.
Illuminance | ||
Illumination | ||
Luminance | ||
Luminous flux | ||
Luminous intensity | ||
Reflectance |
Unit of measure is the Lux.
Illuminance | ||
Illumination | ||
Luminance | ||
Luminous flux | ||
Luminous intensity | ||
Reflectance |
The rods ... (check all that apply)
are best for viewing detail | ||
are located in around the periphery of the retina | ||
require more light than the cones | ||
are used for detecting motion in the periphery | ||
exist in three types: short, medium and long |
The cones ... (check all that apply)
are best for viewing detail | ||
are located only in the periphery of the retina | ||
require more light than the rods | ||
are used for detecting motion in the periphery | ||
exist in three types: short, medium and long |
The fovea is
where the optic nerve attaches to the eye | ||
an area of densely packed rods | ||
an area of densely packed cones | ||
the back of the eye where the rods and cones are located |
The optic disk is
where the optic nerve attaches to the eye | ||
an area of densely packed rods | ||
an area of densely packed cones | ||
the back of the eye where the rods and cones are located |
Visual acuity is
the ability to adjust to light levels. | ||
the ability to detect changes in contrast. | ||
the ability to detect detail. | ||
the ability to focus light on the retina. |
Accommodation is
the ability to adjust to light levels. | ||
the ability to detect changes in contrast. | ||
the ability to detect detail. | ||
the ability to focus light on the retina. |
The retina is
where the optic nerve attaches to the eye | ||
an area of densely packed rods | ||
an area of densely packed cones | ||
the back of the eye where the rods and cones are located |
A eye that focuses light in front of the retina is
myopic | ||
hyperopic | ||
presbyopic | ||
astigmatic |