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    The message of radiation from space

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    What are the three types of spectra emitted from hot objects? How are spectral lines formed from hydrogen atoms? How are spectral lines formed from molecules? What kinds of information can we get from spectral lines?

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    there are three types of spectra: continuous spectra, emission (or bright) line spectra, and absorption (or dark) line spectra. In the continuous type of spectra, all the bandwidth is continuously bright. In the emission spectra, all the bandwidth is black except a few bright lines which are distributed discretely in the background black bandwidth. The absorption spectra are the opposite of emission ones: In them, all the bandwidth is continuously ...

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    The three types of spectra emitted from hot objects are examined.

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