Overview
Reproduces Young’s double-slit experiment to measure light’s wave nature using:

Where:

• Y is the fringe separation,

• λ is the wavelength of light,

• L is the distance to the screen,

• m is referring to the order of the fringe, such as 1st, 2nd, etc,

• d is the slit separation.

Significance
Foundational to wave optics, used in quantum mechanics and holography.