Are we mistaking CBMR for normal ''light''?

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Offline Thebox

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Are we mistaking CBMR for normal ''light''?
« on: 03/12/2015 10:08:18 »
How do we know that the CBMR we observe is not really just the light/radiation emitted from a star{s}?

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Offline alancalverd

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Re: Are we mistaking CBMR for normal ''light''?
« Reply #1 on: 03/12/2015 18:52:21 »
Wrong spectrum, wrong spatial distribution. Same way as you know the red light in front of you is not the green light on  your left.
« Last Edit: 04/12/2015 23:56:23 by alancalverd »
helping to stem the tide of ignorance

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Offline evan_au

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Re: Are we mistaking CBMR for normal ''light''?
« Reply #2 on: 03/12/2015 19:35:10 »
Stars contain elements higher than Hydrogen, which produce a line spectrum.

However, it is thought that CMBR originated from a time when there was only Hydrogen, Helium and some Deuterium.

The spectrum is now extremely red-shifted.
http://en.wikipedia.org/wiki/Big_Bang_nucleosynthesis#Helium-4

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Offline Thebox

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Re: Are we mistaking CBMR for normal ''light''?
« Reply #3 on: 03/12/2015 19:41:39 »
Wrong spectrum, wrong spatial distribution. Same was as you know the red light in front of you is not the green light on  your left.


What do you mean wrong spectrum? 

what spectrum is clear light?

We don't observe clear light but by device we observe electromagnetic radiation (CBMR), what is the difference then?  both are clear to vision.


''wrong spatial distribution''  how would we possibly see this by the eye when they both are clear to sight?


How do you know, that what you observe by device is not that which we can not observe by eye and just EMR?
« Last Edit: 03/12/2015 19:48:40 by Thebox »