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Author Question: When excited electrons decay to ground state, hydrogen emits along distinctive line near the visible ... (Read 89 times)

jazziefee

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on: Feb 28, 2020
When excited electrons decay to ground state, hydrogen emits along distinctive line near the visible red. An astronomer observes what appear to be hydrogen emission lines from a distant star but they are in the infrared spectral band. She concludes ________.
◦ the star must be moving very fast away from Earth
◦ the star's hydrogen emission must be being absorbed by water in the atmosphere, which then re-emits in the infrared
◦ her instrument needs to be recalibrated
◦ the star must be moving very fast toward Earth
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Marked as best answer by jazziefee on Feb 28, 2020

bookworm410

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Reply #1 on: Feb 28, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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jazziefee

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Reply 2 on: Feb 28, 2020
Great answer, keep it coming :)

vickybb89

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Reply 3 on: Yesterday
Excellent

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