CMB Radiation

Physics: Edexcel IGCSE, topic 8.3.3

Cosmic Microwave Background (CMB) Radiation

Scientists have discovered microwave radiation coming from every direction in the Universe. This is called the Cosmic Microwave Background Radiation, or CMBR.

CMB radiation

CMB radiation is mostly in the microwave part of the electromagnetic spectrum.
It can be detected as a very low energy signal coming from every direction in space.
It is the radiation that is produced by gas at very low temperatures.

CMB as evidence

CMB radiation is very strong evidence for the Big Bang model.
It is considered to be the remnants of the Big Bang explosion.

Test yourself on CMB Radiation

Which model can't explain CMB radiation?
Which of these are true of CMB radiation?

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