Physics, 26.02.2020 19:15 layshjjbradshaw7250

The spectrum of Star A has an absorption line of hydrogen at 660.0 nm. The spectrum of Star B has an absorption line at 666 nm. The wavelength of this transition in the laboratory is 656.2 nm. What can I say about Star A and B?

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The spectrum of Star A has an absorption line of hydrogen at 660.0 nm. The spectrum of Star B has an...

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