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0.2 mm apart. Approximately how far apart are the bright
interference lines on a screen 5 m away from the double slits?
The separation between bright interference lines:
y = ym +1 ym =
[( m + 1) m] =
L (632.8 10 m)(5m)
0.2 10 3 m
37.4 Intensity Distribution of the double-slit interference pattern
Electric field intensities at P:
Path difference of two waves: = r2 - r1 = d sin E1 = E0 sin t Condition for constructive interference:
= d sin = m
(m = 0, ±1, ±2, …)
Condition for destructive interference:
= d sin = ( m + 1 )
(m = 0, ±1, ±2...
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This document was uploaded on 04/06/2014.
- Spring '14