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staedtler staedtler
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7 years ago
The strong ultraviolet spectral line emitted by hot hydrogen gas is known as the
   A)  21-cm line.    B)  Balmer  line.    C)  Lyman  line.    D)  Paschen  line.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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hyponoticahyponotica
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7 years ago
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staedtler Author
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7 years ago
Person Raising Both Hands in Celebration

Correct Slight Smile
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