Grating spacing
What Grating spacing means in Physics A-Level, as defined for AQA, OCR.
Definitions of Grating spacing
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Reference: AQA
The spacing d of a diffraction grating, determined from the number of lines per metre using d = 1 / N.
The distance between adjacent slits, equal to the reciprocal of the number of lines per metre.
The distance between adjacent slits, equal to 1 divided by the number of lines per metre.
Topics that use Grating spacing
- Interference (AQA A-Level)
- Electromagnetic radiation from stars (OCR A-Level)
- Superposition (OCR A-Level)
Related terms
- Coherence
- Constructive interference
- Constructive superposition
- Destructive interference
- Destructive superposition
- Interference
- Order
- Path difference
Using Grating spacing in the exam
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