If a wave source is moving relative to an observer there will be a perceived change in the observed wavelength and frequency
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What is red-shift?
The observed increase in wavelength of light from the most distant galaxies, the further away the galaxy, the faster they are moving and the larger the observed increase in wavelength
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What does red-shift provide evidence for?
It shows that the universe is expanding- the Big Bang Theory
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What is CMBR?
CMBR is a form of electromagnetic radiation that fills the universe, it comes from gamma radiation that was present just after the beginning of the universe
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What theory can give reason for the existence of CMBR?
The Big Bang Theory
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Other cards in this set
Card 2
Front
What is red-shift?
Back
The observed increase in wavelength of light from the most distant galaxies, the further away the galaxy, the faster they are moving and the larger the observed increase in wavelength
Card 3
Front
What does red-shift provide evidence for?
Back
Card 4
Front
What is CMBR?
Back
Card 5
Front
What theory can give reason for the existence of CMBR?
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