Photon emission
What Photon emission means in Physics A-Level, as defined for AQA, OCR.
Definitions of Photon emission
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Reference: AQA
Each line arises when an electron drops from a higher discrete level to a lower one, emitting one photon of energy hf equal to the level difference.
When an electron drops from a higher level to a lower one, the atom loses energy and emits a single photon carrying that exact energy difference.
Topics that use Photon emission
- Energy levels and photon emission (AQA A-Level)
- Electromagnetic radiation from stars (OCR A-Level)
Related terms
- Discrete energy levels
- Black-body modelling of stars
- Continuous spectrum
- Emission line spectrum
- Energy levels
- Estimation of stellar surface temperature
- Grating spacing
- Line spectra
Using Photon emission in the exam
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