CMBR

Key term for OCR GCSE Physics B, used in The Big Bang.

Definition

Cosmic Microwave Background Radiation; uniform radiation found in all directions in the sky that is the red-shifted remains of high-energy radiation from the early universe.

Exam Context

CMBR appears in OCR GCSE Physics B revision content for Matter – models and explanations, especially The Big Bang and The Big Bang.

Matter – models and explanations The Big Bang The Big Bang

Found in Revision Notes

Matter – models and explanations

Red-shift and Evidence for the Big Bang

The Big Bang • The Big Bang

Revise note

Related Key Terms

Absorption spectrum Big Bang model Cosmological red-shift Doppler effect Hubble Constant (H₀)Hubble's Law Receding galaxy Recession velocity

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