Serway_PSE_quick_ch37

# Serway_PSE_quick_ch3 - Physics for Scientists and Engineers 6e Chapter 37 Interference of Light Waves If you were to blow smoke into the space

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Physics for Scientists and Engineers, 6e Chapter 37 - Interference of Light Waves

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If you were to blow smoke into the space between the barrier and the viewing screen of Figure 37.5a, the smoke would show 1 2 50% 50% 1 2 3 4 5 1. no evidence of interference between the barrier and the screen 2. evidence of interference everywhere between the barrier and the screen.
The geometrical construction shown in Figure 37.5 is important for developing the mathematical description of interference. It is subject to misinterpretation, however, as it might suggest that the interference can only occur at the position of the screen. A better diagram for this situation is Figure 37.2, which shows paths of destructive and constructive interference all the way from the slits to the screen. These paths would be made visible by the smoke.

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In a two-slit interference pattern projected on a screen, the fringes are equally spaced on the screen 1 2 3 33% 33% 33% 1 2 3 4 5 1. everywhere 2. only for large angles 3. only for small angles
Equation 37.5, which shows positions y proportional to order number m , is only valid for small angles.

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## This note was uploaded on 01/19/2010 for the course PHYS 200 taught by Professor Davies during the Spring '08 term at Roger Williams.

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Serway_PSE_quick_ch3 - Physics for Scientists and Engineers 6e Chapter 37 Interference of Light Waves If you were to blow smoke into the space

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