Physics A-Level
Limits on observable orders
What Limits on observable orders means in Physics A-Level, as defined for OCR.
Definition of Limits on observable orders
Check what you remember
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Reference: OCR
The maximum possible order is limited because sin θ cannot exceed 1, so n ≤ d / λ.
Topics that use Limits on observable orders
- Electromagnetic radiation from stars (OCR A-Level)
Related terms
- Black-body modelling of stars
- Continuous spectrum
- Discrete energy levels
- Emission line spectrum
- Energy levels
- Estimation of stellar surface temperature
- Grating spacing
- Line spectra
Using Limits on observable orders in the exam
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