Perhaps to confuse a predator, some tropical gyrinid beetles (whirligig beetles) are colored by optical interference that is due to scales whose alignment forms a diffraction grating (which scatters light instead of transmitting it). When the incident light rays are perpendicular to the grating, the angle between the firstorder maxima (on opposite sides of the zeroth-order maximum) is about 26° in light with a wavelength of 550 nm.What is the grating spacing of the beetle?
Perhaps to confuse a predator, some tropical gyrinid beetles (whirligig beetles) are colored by optical interference that is due to scales whose alignment forms a diffraction grating (which scatters light instead of transmitting it). When the incident light rays are perpendicular to the grating, the angle between the firstorder maxima (on opposite sides of the zeroth-order maximum) is about 26° in light with a wavelength of 550 nm.What is the grating spacing of the beetle?
University Physics Volume 3
17th Edition
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:William Moebs, Jeff Sanny
Chapter4: Diffraction
Section: Chapter Questions
Problem 39P: When a monochromatic light of wavelength 430 nm incident on a double slit of slit separation 5 m,...
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Perhaps to confuse a predator, some tropical gyrinid
beetles (whirligig beetles) are colored by optical interference that
is due to scales whose alignment forms a diffraction grating (which
scatters light instead of transmitting it). When the incident light
rays are perpendicular to the grating, the angle between the firstorder
maxima (on opposite sides of the zeroth-order maximum) is
about 26° in light with a wavelength of 550 nm.What is the grating
spacing of the beetle?
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