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Hydrogen line

The hydrogen line, 21 centimeter line, or H I line is a spectral line that is created by a change in the energy state of solitary, electrically neutral hydrogen atoms. It is produced by a spin-flip transition, which means the direction of the electron's spin is reversed relative to the spin of the proton. This is a quantum state change between the two…

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Hydrogen line

Nodes121
Edges120
Triples40
Avg. degree1.98
Density0.016529
Components1

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Hydrogen line

Top relations

related to Relevance to the search for non-human intelligent life · 23
Hydrogen line → According, American, Cocconi, Earth, For, George Basalla, Giuseppe Cocconi, In, It, Italian, Morrison, On, Philip Morrison, Pioneer, Pyotr Makovetsky, Searching, SETI, Similarly, Solar System, Sun
related to In radio astronomy · 14
Hydrogen line → Assuming, Doppler, Earth, Earth's, Electromagnetic, Hence, However, Hydrogen, In, It, The, UHF, Verschuur, Zeeman

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hydrogen line 21 cm 10 frequency energy arxiv radio bibcode doi s2cid neutral transition observed proton astro-ph state used wavelength

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SubjectPredicateObjectConfidenceSrc
hydrogen clouds in our galaxyinstance ofIt is commonly observed in astronomical settings0.80text
others.Because of the uncertainty principleinstance ofIt is commonly observed in astronomical settings0.80text
its long lifetime gives an energy uncertainty on the order of 10instance ofIt is commonly observed in astronomical settings0.80text
Hydrogen linerelated to In radio astronomyThe0.60section
Hydrogen linerelated to In radio astronomyUHF0.60section
Hydrogen linerelated to In radio astronomyElectromagnetic0.60section
Hydrogen linerelated to In radio astronomyEarth's0.60section
Hydrogen linerelated to In radio astronomyEarth0.60section
Hydrogen linerelated to In radio astronomyAssuming0.60section
Hydrogen linerelated to In radio astronomyDoppler0.60section
Hydrogen linerelated to In radio astronomyHence0.60section
Hydrogen linerelated to In radio astronomyIt0.60section

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