A wide beam of laser light with a wavelength of 632.8 nm is directed through several narrow parallel slits, separated by 1.20 mm, and falls on a sheet of photographic film 1.40 m away. The exposure time is chosen so that the film stays unexposed everywhere except at the central region of each bright fringe. (a) Find the distance between these interfer- ence maxima. The film is printed as a transparency; it is opaque everywhere except at the exposed lines. Next, the same beam of laser light is directed through the transpar- ency and allowed to fall on a screen 1.40 m beyond. (b) Argue that several narrow, parallel, bright regions, sepa- rated by 1.20 mm, appear on the screen as real images of the original slits. (A similar train of thought, at a soccer game, led Dennis Gabor to invent holography.)
A wide beam of laser light with a wavelength of 632.8 nm is directed through several narrow parallel slits, separated by 1.20 mm, and falls on a sheet of photographic film 1.40 m away. The exposure time is chosen so that the film stays unexposed everywhere except at the central region of each bright fringe. (a) Find the distance between these interfer- ence maxima. The film is printed as a transparency; it is opaque everywhere except at the exposed lines. Next, the same beam of laser light is directed through the transpar- ency and allowed to fall on a screen 1.40 m beyond. (b) Argue that several narrow, parallel, bright regions, sepa- rated by 1.20 mm, appear on the screen as real images of the original slits. (A similar train of thought, at a soccer game, led Dennis Gabor to invent holography.)
University Physics Volume 3
17th Edition
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:William Moebs, Jeff Sanny
Chapter4: Diffraction
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Problem 4.5CYU: Check Your Understanding What is the angular resolution of the Arecibo telescope shown in Figure...
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![22. A wide beam of laser light with a wavelength of 632.8 nm is
QIC directed through several narrow parallel slits, separated by
1.20 mm, and falls on a sheet of photographic film 1.40 m
away. The exposure time is chosen so that the film stays
unexposed everywhere except at the central region of each
bright fringe. (a) Find the distance between these interfer-
ence maxima. The film is printed as a transparency; it is
opaque everywhere except at the exposed lines. Next, the
same beam of laser light is directed through the transpar-
ency and allowed to fall on a screen 1.40 m beyond. (b)
Argue that several narrow, parallel, bright regions, sepa-
rated by 1.20 mm, appear on the screen as real images of the
original slits. (A similar train of thought, at a soccer game,
led Dennis Gabor to invent holography.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5cfb654a-ec8f-4485-a9ef-4387b0f04367%2F05d6e7de-60aa-47f8-8469-16cef13dfc7b%2Fpqrvfb_processed.png&w=3840&q=75)
Transcribed Image Text:22. A wide beam of laser light with a wavelength of 632.8 nm is
QIC directed through several narrow parallel slits, separated by
1.20 mm, and falls on a sheet of photographic film 1.40 m
away. The exposure time is chosen so that the film stays
unexposed everywhere except at the central region of each
bright fringe. (a) Find the distance between these interfer-
ence maxima. The film is printed as a transparency; it is
opaque everywhere except at the exposed lines. Next, the
same beam of laser light is directed through the transpar-
ency and allowed to fall on a screen 1.40 m beyond. (b)
Argue that several narrow, parallel, bright regions, sepa-
rated by 1.20 mm, appear on the screen as real images of the
original slits. (A similar train of thought, at a soccer game,
led Dennis Gabor to invent holography.)
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