Home 4.6a Elemental Fingerprints

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4.6a Elemental Fingerprints

External Link: http://bcove.me/l8sr7abb

SUMMARY

When atoms of an element are heated to a point where they emit light, it is found that they only emit characteristic frequencies of color. Demonstrations of H, He, and Ne are shown. Duration: 5:37

 

VIDEO CHECK QUESTIONS

1. How can a spectroscope help us identify elements?
2. If you are looking through a spectroscope at a diffraction gradient, and you see many red
3. How can astronomers use a spectroscope in their research of stars?

To optimize your learning, try answering the above video check questions on your own before scrolling down to view the author's answers.





1. How can a spectroscope help us identify elements?
[Elements only emit characteristic frequencies of color, much like a finger print.]
2. If you are looking through a spectroscope at a diffraction gradient, and you see many red
[Ne.]
3. How can astronomers use a spectroscope in their research of stars?
[By looking at the characteristic spectral pattern emitted by a star, they can determine the elemental composition of that star.]

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