hydrogen line (Q1406191)

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spectral line of hydrogen state transitions
  • H I line
  • HI line
  • H one line
  • 21 cm line
  • 21 centimeter line
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Language Label Description Also known as
English
hydrogen line
spectral line of hydrogen state transitions
  • H I line
  • HI line
  • H one line
  • 21 cm line
  • 21 centimeter line

Statements

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Hydrogen-SpinFlip.svg
374 × 342; 47 KB
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21.10611405413±0.00000000001 centimetre
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1,420,405,751.7667±0.0009 hertz
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21cm line
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Identifiers

 
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