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…)

X_m:  Width of the band

L:  Distance from the slit to the screen

Minima:

n. λ = w.sin θ_m

n. λ =

n = 1 for the first minimum

n = 2 for the second minimum

n = 3 for the third minimum

Maxima:

 .λ = w.sin θ_m

 .λ =

m = 1 for the first maxima

m = 2 for the second maxima

m = 3 for the third maxima