单词 | blue shift |
释义 | blue shiftnoun [mass noun] Astronomy The displacement of the spectrum to shorter wavelengths in the light coming from distant celestial objects moving towards the observer. Compare with red shift.In the solar case, plasma motion towards us, which means away from the solar surface, is detected as blue shift in the ultraviolet spectrum, and thus can be used to identify the beginning of the solar wind outflow....
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