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Category
Optics

Double-Slit Interference

Condition for constructive interference (bright fringes) in Young's double-slit experiment.

Variables

d
Slit separation
m
\theta
Angle to maximum
°
m
Order number
unitless
\lambda
Wavelength
m

Derivation

Derived from path difference between light from two slits being an integer multiple of wavelength.

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