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The photoreceptors in the human eye, called rods and cones, have different sensitivities to different wavelengths of electromagnetic waves. (Notice that 8 7 Log relative sensitivity 3 1 0 350 Part A Submit the y axis in the figure is a logarithmic scale.) The rods, which number over 100 million, can only be activated by a certain range of wavelengths, but they do not pass any color information to the brain. In other words, they note differences in shades of grey (from black to white) and are responsible for a person's ability to see in dim light. Cones, which number around 6 million, give us color vision. Cones come in three different kinds: 64% of cones are sensitive to long wavelengths of visible light (toward the red end of the spectrum), 32% are sensitive to medium wavelengths, and the remaining 2% are sensitive to short wavelengths (toward the blue end of the spectrum). Colors are differentiated on the basis of the extent to which visible light stimulates each kind of cone. higher lower Part B Do rods have their peak sensitivity at a higher or lower frequency than cones? ► View Available Hint(s) ✓ Correct O red 400 violet Submit Part C Do rods and cones have similar sensitivities near the red or near the violet edge of the visible spectrum? ► View Available Hint(s) red Rods Cones Wavelength (nm) O violet Submit 500 600 700 800 Part D Is it easier to detect a dim red source or a dim violet source of light? View Available Hint(s) Previous Answers At 470 nm, which of the following statements is the most accurate? ► View Available Hint(s) Rods are about 1000 times more sensitive than cones. Rods are about 3 times more sensitive than cones. Rods and cones are about equally sensitive. Cones are about 3 times more sensitive than rods. Cones are about 1000 times more sensitive than rods.

The photoreceptors in the human eye, called rods and cones, have different sensitivities to different wavelengths of electromagnetic waves. (Notice that 8 7 Log relative sensitivity 3 1 0 350 Part A Submit the y axis in the figure is a logarithmic scale.) The rods, which number over 100 million, can only be activated by a certain range of wavelengths, but they do not pass any color information to the brain. In other words, they note differences in shades of grey (from black to white) and are responsible for a person's ability to see in dim light. Cones, which number around 6 million, give us color vision. Cones come in three different kinds: 64% of cones are sensitive to long wavelengths of visible light (toward the red end of the spectrum), 32% are sensitive to medium wavelengths, and the remaining 2% are sensitive to short wavelengths (toward the blue end of the spectrum). Colors are differentiated on the basis of the extent to which visible light stimulates each kind of cone. higher lower Part B Do rods have their peak sensitivity at a higher or lower frequency than cones? ► View Available Hint(s) ✓ Correct O red 400 violet Submit Part C Do rods and cones have similar sensitivities near the red or near the violet edge of the visible spectrum? ► View Available Hint(s) red Rods Cones Wavelength (nm) O violet Submit 500 600 700 800 Part D Is it easier to detect a dim red source or a dim violet source of light? View Available Hint(s) Previous Answers At 470 nm, which of the following statements is the most accurate? ► View Available Hint(s) Rods are about 1000 times more sensitive than cones. Rods are about 3 times more sensitive than cones. Rods and cones are about equally sensitive. Cones are about 3 times more sensitive than rods. Cones are about 1000 times more sensitive than rods.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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ܩܘ ܟ 8:28 Course Home openvellum.ecollege.com <Homework #07 (Chapter 23) Electromagnetic Waves and Human Vision < 4 of 6 > × Log relative sensitivity The photoreceptors in the human eye, called rods and cones, have different sensitivities to different wavelengths of electromagnetic waves. (Notice that 8 N 0 350 Part A Submit the y axis in the figure is a logarithmic scale.) The rods, which number over 100 million, can only be activated by a certain range of wavelengths, but they do not pass any color information to the brain. In other words, they note differences in shades of grey (from black to white) and are responsible for a person's ability to see in dim light. Cones, which number around 6 million, give us color vision. Cones come in three different kinds: 64% of cones are sensitive to long wavelengths of visible light (toward the red end of the spectrum), 32% are sensitive to medium wavelengths, and the remaining 2% are sensitive to short wavelengths (toward the blue end of the spectrum). Colors are differentiated on the basis of the extent to which visible light stimulates each kind of cone. Part B ✓ Correct Do rods have their peak sensitivity at a higher or lower frequency than cones? View Available Hint(s) higher lower O red O violet Submit Part C 400 Part D O red O violet Submit O Do rods and cones have similar sensitivities near the red or near the violet edge of the visible spectrum? ► View Available Hint(s) O O O Rods Cones Is it easier to detect a dim red source or a dim violet source of light? View Available Hint(s) Review | Constants Wavelength (nm) 500 600 700 800 At 470 nm, which of the following statements is the most accurate? View Available Hint(s) Previous Answers Submit till 100% Rods are about 1000 times more sensitive than cones. Provide Feedback Rods are about 3 times more sensitive than cones. Rods and cones are about equally sensitive. Cones are about 3 times more sensitive than rods. Cones are about 1000 times more sensitive than rods. Part E Complete previous part(s) Next > P Pearson Copyright © 2023 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy | Permissions | Contact Us | :
Transcribed Image Text:ܩܘ ܟ 8:28 Course Home openvellum.ecollege.com <Homework #07 (Chapter 23) Electromagnetic Waves and Human Vision < 4 of 6 > × Log relative sensitivity The photoreceptors in the human eye, called rods and cones, have different sensitivities to different wavelengths of electromagnetic waves. (Notice that 8 N 0 350 Part A Submit the y axis in the figure is a logarithmic scale.) The rods, which number over 100 million, can only be activated by a certain range of wavelengths, but they do not pass any color information to the brain. In other words, they note differences in shades of grey (from black to white) and are responsible for a person's ability to see in dim light. Cones, which number around 6 million, give us color vision. Cones come in three different kinds: 64% of cones are sensitive to long wavelengths of visible light (toward the red end of the spectrum), 32% are sensitive to medium wavelengths, and the remaining 2% are sensitive to short wavelengths (toward the blue end of the spectrum). Colors are differentiated on the basis of the extent to which visible light stimulates each kind of cone. Part B ✓ Correct Do rods have their peak sensitivity at a higher or lower frequency than cones? View Available Hint(s) higher lower O red O violet Submit Part C 400 Part D O red O violet Submit O Do rods and cones have similar sensitivities near the red or near the violet edge of the visible spectrum? ► View Available Hint(s) O O O Rods Cones Is it easier to detect a dim red source or a dim violet source of light? View Available Hint(s) Review | Constants Wavelength (nm) 500 600 700 800 At 470 nm, which of the following statements is the most accurate? View Available Hint(s) Previous Answers Submit till 100% Rods are about 1000 times more sensitive than cones. Provide Feedback Rods are about 3 times more sensitive than cones. Rods and cones are about equally sensitive. Cones are about 3 times more sensitive than rods. Cones are about 1000 times more sensitive than rods. Part E Complete previous part(s) Next > P Pearson Copyright © 2023 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy | Permissions | Contact Us | :
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