EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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Chapter 34, Problem 47P
(III) The yellow sodium D lines have wavelengths of 589.0 and 589.6 nm. When they are used to illuminate a Michelson interferometer, it is noted that the interference fringes disappear and reappear periodically as the mirror M1 is moved. Why does this happen? How far must the mirror move between one disappearance and the next?
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Students have asked these similar questions
*59. (III) One of the beams of an interferometer (Fig. 24–61)
passes through a small evacuated glass container 1.155 cm
deep. When a gas is allowed to slowly fill the container,
a total of 158 dark fringes are counted to move past a
reference line. The light used has a wavelength of 632.8 nm.
Calculate the index of refraction of the gas at its final
density, assuming that the interferometer is in vacuum.
To mirror M1
Glass container
Source-
FIGURE 24-61
Ms
1.155 cm
М
ст
Problem 59.
(c)
Coherent light that contains two wavelengths, 660 nm (red) and 470 nm (blue), passes
through two narrow slits separated by 0.3 mm, and the interference pattern is observed
on a screen 5 m from the slits. Calculate the distance on the screen between the first-
order bright fringes for red and blue light.
4. (a)
(i) A sodium light of wavelength 580 nm falls on two narrow slits. The distance
between the third dark fringe to the central bright on a screen is 3.5 mm. Distance
between slits and screen is 160 cm. What is the spacing between the two slits?
(ii) Solar cells are an example of anti-reflective coatings. Let a silicon solar cell (n
= 3.45) coated with a layer of silicon dioxide (n = 1.45). Calculate the minimum
coating thickness that will minimize the reflection of the light with wavelength
of 650 nm?
Chapter 34 Solutions
EBK PHYSICS FOR SCIENTISTS & ENGINEERS
Ch. 34 - Prob. 1QCh. 34 - What is the evidence that light is energy?Ch. 34 - Why is light sometimes described as rays and...Ch. 34 - We can hear sounds around corners but we cannot...Ch. 34 - Can the wavelength of light be determined from...Ch. 34 - Two rays of light from the same source...Ch. 34 - Monochromatic red light is incident on a double...Ch. 34 - If Youngs double-slit experiment were submerged in...Ch. 34 - Compare a double-slit experiment for sound waves...Ch. 34 - Suppose white light falls on the two slits of Fig....
Ch. 34 - Why doesnt the light from the two headlights of a...Ch. 34 - Why are interference fringes noticeable only for a...Ch. 34 - Prob. 14QCh. 34 - Some coated lenses appear greenish yellow when...Ch. 34 - A drop of oil on a pond appears bright at its...Ch. 34 - (II) Derive the law of reflectionnamely, that the...Ch. 34 - (II) Suppose a thin piece of glass is placed in...Ch. 34 - (I) If one slit in Fig. 3412 is covered, by what...Ch. 34 - (II) In a two-slit interference experiment, the...Ch. 34 - (II) (a) What is the smallest thickness of a soap...Ch. 34 - (III) The yellow sodium D lines have wavelengths...
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Spectra Interference: Crash Course Physics #40; Author: CrashCourse;https://www.youtube.com/watch?v=-ob7foUzXaY;License: Standard YouTube License, CC-BY