Principles of Physics 11th ISV Edition · Diffraction · Problem 54
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Walker, Halliday & Resnick — Diffraction: Problem 54
54 In conventional television, signals are broadcast from towers to home receivers. Even when a receiver is not in direct view of a tower because of a hill or building, it can still intercept a signal if the signal diffracts enough around the obstacle, into the obstacle’s “shadow region.” Previously, television signals had a wavelength of about 50 cm, but digital television signals that are transmitted from towers have a wavelength of about 10 mm. (a) Did this change in wavelength increase or decrease the diffraction of the signals into the shadow regions of obstacles? Assume that a signal passes through an opening of 6.0 m width between two adjacent buildings. What is the angular spread of the central diffraction maximum (out to the first minima) for wavelengths of (b) 50 cm and (c) 10 mm?
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주어진 조건: 54 In, 50 cm, 10 mm, 6.0 m
구하는 것: (a) Did this change in wavelength increase or decrease the diffr; (b) 50 cm and; (c) 10 mm?
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Principles of Physics · 11th ISV Edition
저자: Walker, Halliday & Resnick
출판사: Wiley
단원: Diffraction