SINGLE SLIT

 

 

Since θ is very small, we can assume that L ≈ L1

 

 

 

 

 

w:  Width of the slit (m)

m:  Order number of maxima (whole number, 1, 2, 3)

n:  Order number of minima (whole number, 1, 2, 3)

Xm:  Width of the band

L:  Distance from the slit to the screen

 

 

Minima:

 

n. λ = w.sin θm

 

n. λ =

 

n = 1 for the first minimum

n = 2 for the second minimum

n = 3 for the third minimum

 

 

Maxima:

 

 .λ = w.sin θm

 

 .λ =

 

m = 1 for the first maxima

m = 2 for the second maxima

m = 3 for the third maxima