At night many people see rings (called entoptic halos) surrounding bright outdoor lamps in otherwise dark surroundings. The rings are the first of the side maxima in diffraction patterns produced by structures that are thought to be within the cornea (or possibly the lens) of the observer’s eye. (The central maxima of such patterns overlap the lamp.) (a) Would a particular ring become smaller or larger if the lamp were switched from blue to red light? (b) If a lamp emits white light, is blue or red on the outside edge of the ring?
At night many people see rings (called entoptic halos) surrounding bright outdoor lamps in otherwise dark surroundings. The rings are the first of the side maxima in diffraction patterns produced by structures that are thought to be within the cornea (or possibly the lens) of the observer’s eye. (The central maxima of such patterns overlap the lamp.) (a) Would a particular ring become smaller or larger if the lamp were switched from blue to red light? (b) If a lamp emits white light, is blue or red on the outside edge of the ring?
Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter36: Wave Optics
Section: Chapter Questions
Problem 37AP: In a Newtons-rings experiment, a plano-convex glass (n = 1.52) lens having radius r = 5.00 cm is...
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At night many people see rings (called entoptic halos) surrounding
bright outdoor lamps in otherwise dark surroundings. The rings
are the first of the side maxima in diffraction patterns produced by
structures that are thought to be within the cornea (or possibly the
lens) of the observer’s eye. (The central maxima of such patterns
overlap the lamp.) (a) Would a particular ring become smaller or
larger if the lamp were switched from blue to red light? (b) If a lamp
emits white light, is blue or red on the outside edge of the ring?
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