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 optically resolve two closely spaced objects at a distance r. (a) By what factor could the distance between the two objects be reduced 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 Units

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 optically resolve two closely spaced objects at a distance r. (a) By what factor could the distance between the two objects be reduced 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 Units

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter2: Geometric Optics And Image Formation

Section: Chapter Questions

Problem 68P: Suppose a certain person’s visual acuity is such that he can see objects clearly that form an image...

See similar textbooks

Similar questions

Suppose you are looking down at a highway from a jetliner flying at an altitude of 6.0 km. How far apart must two cars be if you are able to distinguish them? Assume that =550 nm and that the diameter of your pupils is 4.0 mm.
If a microscope can accept light from objects at angles as large as =70 , what is the smallest structure that can be resolved when illuminated with light of wavelength 500 nm and (a) the specimen is in air? (b) When the specimen is immersed in oil, with index of refraction of 1.52?
The headlights of a car are 1.3 m apart. What is the maximum distance at which the eye can resolve these two headlights? Take the pupil diameter to be 0.40 cm.
A nearsighted man cannot see objects clearly beyond 20 cm from his eyes. How close must he stand to a mirror in order to see what he is doing when he shaves?
A camera uses a lens with aperture 2.0 cm. What is the angular resolution of a photograph taken at 700 nm wavelength? Can it resolve the millimeter markings of a ruler placed 35 m away?
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 optically resolve two closely spaced objects at a distance r. (a) By what factor could the distance between the two objects be reduced 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 Units
Can you please help me with this question? Thank you!
Estimate the linear separation (in kilometers) of two objects at a distance of 1.9 × 10° km that can just be resolved by an observer on Earth (a) using the naked eye and (b) using a telescope with a 7.4-m diameter mirror. Use the following data: diameter of pupil = 5.0 mm; wavelength of light = 550 nm. %3D (a) Number i 2.5E8 Units km (b) Number i 1.7E5 Units km
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.
What is the smallest thing we can see? O smallest object that we can process with our eyes is limited to the size of the photoreceptor cells in the retina. In order for us to to distinguish any detail in an object, its image cannot be smaller cannot be smaller than a single retinal cell. Although the size depends on the type of cell (cone or rod), a diameter of of a few microns (mm) is common near the center of the eye. We should model the eye as a sphere 2.50 cm in diameter with a single slender lens in front and the retina behind, with photoreceptor cells 5.0 mm in diameter. (a) What is the smallest object object that you can perceive at a point near 25 cm? What angle is subtended by this object in the eye? Express your answer in units of minutes (1° 60 min) and compare it with the typical experimental value of about 1.0 min. (Note: there are other limitations, but we will ignore them here).
Please Asap
Estimate the linear separation (in kilometers) of two objects at a distance of 1.4 x 106 km that can just be resolved by an observer on Earth (a) using the naked eye and (b) using a telescope with a 5.4-m diameter mirror. Use the following data: diameter of pupil = 5.0 mm; wavelength of light = 550 nm. (a) Number i Units (b) Number i Units