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Hydrogen line - Wikipedia, the free encyclopedia
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The Bohr model for an electron transition in hydrogen between quantized energy levels with different quantum numbers n yields a photon by emission with quantum energy: This is often expressed in terms of the inverse wavelength or ... The red line of deuterium is measurably different at 656.1065 ( .1787 nm difference).
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The hydrogen in our galaxy has been mapped by the observation of the 21-cm wavelength line of hydrogen gas. At 1420 MHz, this radiation from hydrogen penetrates the dust clouds and gives us a more complete map of the hydrogen than that of the stars themselves since their visible light won't penetrate the dust clouds.
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While reading the Winter 1999 issue of SearchLites, I noted with interest the letter from SB, Winston-Salem, NC, asking about using the small 16" dishes for SETI. ... The writer did not mention what frequencies he wanted to use, but he obviously has a ... The helix quad antenna is shown in the accompanying pictures.
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This Page has been generated by VCOM Technology...
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There are many sources of literature data to determine the accuracy of one's Hydrogen line spectrum. Aside from the sources shown in this page, there is also the CRC Handbook of Chemistry and Physics (commonly referred to as the CRC) that contains everything one wishes to know about any element or compound ...
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Line Spectra...
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In the following years, observations of the neutral hydrogen line were done with increasing accuracy by numerous astronomers, primarily Dutch, American, and Australian. The technique proved to be successful in mapping the large-scale distribution of matter in the galaxy.
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Prediction of 21cm Line Radiation ... He found that a "hyperfine" transition in the ground state of neutral hydrogen would produce radiation in the radio range, at a frequency of 1420 MHz, or about 21 cm wavelength. In the ground state of hydrogen, the electron can have its magnetic moment either parallel to that of the...
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