«»»1 understand that the lines in the emission and absorption spectra from distant objects show an increase
in wavelength from their known values
2 use ∆λ/ λ . ∆f/f . v/c for the redshift of electromagnetic radiation from a source moving relative to an
observer
3 explain why redshift leads to the idea that the Universe is expanding

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4 recall and use Hubble’s law v . H0d and explain how this leads to the Big Bang theory (candidates will only be required to use SI units)»