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Waves & Optics · interference

Double-Slit Interference

States the constructive-interference condition for a two-slit pattern.

nλ = d sin θ

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Variables

n
integer fringe order
λ
wavelengthm
d
slit separationm
θ
fringe anglerad

Conditions / notes

Applies to the constructive-interference geometry.

Reference details

Subject
Waves & Optics
Topic
interference
Plain text
n lambda = d sin(theta)

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