Jinsuk Kim Posted November 22, 2018 Share Posted November 22, 2018 Let’s assume that frequency is reduced by expansion of space. Then the energy of photon is reduced by E=hf. This is against the law of energy conservation. Though the energy of photon is small, but we have no reason why the law of energy conservation is destroyed. The law of energy conservation must be kept and the big bang theory was developed from it. In the big bang theory, it doesn’t need anything, for example energy, to obtain 1 m3 space. Space of 1 m3 is unconerned with energy so it cannot be replaced by the energy of one electron or all the energy in the universe. This means that though the energy of photon is small, but it should not be reduced by expansion of space. We can suppose that the reduced energy of photon can be transferred to something. But it is just the alternative in the previous discussion, and space doesn’t need to be expanded to explain redshift. Link to comment Share on other sites More sharing options...
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