This preview shows page 1. Sign up to view the full content.
Unformatted text preview: 48. We note that the central diffraction envelope contains the central bright interference
fringe (corresponding to m = 0 in Eq. 3625) plus ten on either side of it. Since the
eleventh order bright interference fringe is not seen in the central envelope, then we
conclude the first diffraction minimum (satisfying sinθ = λ/a) coincides with the m = 11
instantiation of Eq. 3625:
11 λ
mλ
d=
=
= 11 a .
sin θ
λ/ a
Thus, the ratio d/a is equal to 11. ...
View
Full
Document
This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics, Diffraction

Click to edit the document details