Key term for Edexcel GCSE Physics, used in The Universe.
The patterns of dark lines in a continuous spectrum, which are used to detect red-shift by comparing them to a stationary reference source.
Absorption spectra appears in Edexcel GCSE Physics revision content for Astronomy, especially The Universe and Theories and Red-shift.
Create a free account to access Edexcel GCSE Physics revision notes, track progress, and practise related key terms.
