Spec 0625
Revise CIE IGCSE Physics 6.2.3b Redshift with the question bank and revision guides.
Describe redshift as an increase in the observed wavelength of electromagnetic radiation emitted from receding stars and galaxies • Know that the light emitted from distant galaxies appears redshifted in comparison with light emitted on the Earth • Supplement: Know that the speed v at which a galaxy is moving away from the Earth can be found from the change in wavelength of the galaxy’s starlight due to redshift
