Friday, October 15, 2004

D-lines, Vaishnava Samhitas

in spectroscopy, a pair of lines, characteristic of sodium, in the yellow region of the spectrum. Their separation is too small to be detected with a spectroscope of low resolving power. The line is the fourth prominent absorption line in the Sun's spectrum, starting from the red end, and accordingly is designated by the letter D. It has been resolved into two components,

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