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Beginning
1
English
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1.1
Etymology
1.2
Proper noun
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Pfund series
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Malagasy
தமிழ்
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From Wiktionary, the free dictionary
English
[
edit
]
English
Wikipedia
has an article on:
Hydrogen spectral series
Wikipedia
Etymology
[
edit
]
Experimentally discovered in 1924 by August Herman Pfund.
Proper noun
[
edit
]
Pfund
series
One of the
hydrogen spectral series
.
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Pfund series
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