Key term for OCR GCSE Physics A, used in Beyond Earth.
Faint electromagnetic radiation filling the Universe, originating as gamma rays from the early Big Bang and now stretched to microwave wavelengths.
Cosmic Microwave Background Radiation (CMBR) appears in OCR GCSE Physics A revision content for Global challenges, especially Beyond Earth and Big-Bang evidence.
Create a free account to access OCR GCSE Physics A revision notes, track progress, and practise related key terms.
