EBK PHYSICS FOR SCIENTISTS AND ENGINEER
6th Edition
ISBN: 9781319321710
Author: Mosca
Publisher: VST
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Chapter 33, Problem 86P
To determine
The optimum size of the pinhole.
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The normal human eye has maximum visual acuity with a pupil size of about 3 mm. For larger pupils, acuity decreases due to increasing aberrations; for smaller pupils, acuity decreases due to increasing effects of diffraction. Ifyour pupil diameter is 2.0 mm, as it would be in fairly bright light, what is the smallest diameter circle that you can barely see as a circle, rather than just a dot, if the circle is at your near point, 25 cm from your eye? Assume the light’s wavelength in air is 600 nm and the index of refraction inside theeye is 1.33.
Why is optical density greater than 1.0 considered inaccurate? What should be done?
Under dark conditions, the maximum diameter of a human pupil is 7.0 mm, where an owl's pupil may be 8.5 mm. Assume a human can
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and still have the owl optically resolve them at the same distance r? (b) If the distance between the two objects remains fixed, by what
factor could r be increased and still have the owl optically resolve the two objects? In both (a) and (b), assume the wavelength of the
light remains constant.
(a) Number i
Units
(b) Number i
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Chapter 33 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
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