Abstract
THE Balmer lines in the spectra of the positive rays of hydrogen show Doppler displacement dλ given by the relation where λ is the wave-length of the light emitted by a neutral atom of the positive ray beam, moving with a velocity ν, the direction of motion of the atom making an angle θ with the direction of observation; c is the velocity of light.
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DASANNACHARYA, B., DAS, G. Doppler Effect in Positive Rays of Hydrogen. Nature 154, 21–22 (1944). https://doi.org/10.1038/154021a0
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DOI: https://doi.org/10.1038/154021a0
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