Physics A-Level
Diffraction grating equation
What Diffraction grating equation means in Physics A-Level, as defined for AQA.
Definition of Diffraction grating equation
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Reference: AQA
Constructive interference occurs when d sin θ = nλ, where d is the slit spacing, θ is the angle from the normal and n is an integer.
Topics that use Diffraction grating equation
- Diffraction (AQA A-Level)
Related terms
- Central maximum
- Constructive interference
- Experimental control of diffraction variables
- Monochromatic light
- Order of the maximum
- Path difference
- Secondary maxima
- Slit width and diffraction spreading
Using Diffraction grating equation in the exam
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