When the eye sees a star (a point of light), the pupil spreads by diffraction the image of the star to a small round spot on the retina. Suppose the light from the star has a wavelength of m. When the pupil is at its largest, it may have a diameter of 7.0 mm. a) If the distance from the pupil to the retina is 23 mm, what then is the diameter of the image of the star on the retina? In the middle of retina, there are approx. 150,000 light-sensitive cells per . b) How many of these cells are illuminated when the eye looks at the star?
When the eye sees a star (a point of light), the pupil spreads by diffraction the image of the star to a small round spot on the retina. Suppose the light from the star has a wavelength of m. When the pupil is at its largest, it may have a diameter of 7.0 mm. a) If the distance from the pupil to the retina is 23 mm, what then is the diameter of the image of the star on the retina? In the middle of retina, there are approx. 150,000 light-sensitive cells per . b) How many of these cells are illuminated when the eye looks at the star?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:When the eye sees a star (a point of light), the pupil
spreads by diffraction the image of the star to a
small round spot on the retina. Suppose the light
from the star has a wavelength of m. When the
pupil is at its largest, it may have a diameter of 7.0
mm. a) If the distance from the pupil to the retina is
23 mm, what then is the diameter of the image of
the star on the retina? In the middle of retina, there
are approx. 150,000 light-sensitive cells per . b)
How many of these cells are illuminated when the
eye looks at the star?
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