Resolution
The ability to see as distinct two objects that are distinct
Rayleigh criterion
When two objects are just resolved, when the central maximum of one light source coincides with the first minimum of the other
Formula for minimum angle of diffraction for resolution to be possible in a circular slit
s/d ≥ 1.22λ/b
b = diameter of circular slit
Formula for resolving power
R = λavg/Δ λ
Formula for finding the smallest difference in wavelength that can be resolved
Δλ = λavg/mN
m = order at which the lines are observed
N = total number of slits or rulings