...In 1842 Doppler proved that the colour of a luminousbody, like the pitch or note of a sounding body, must be changed by velocity ofapproach or recession... 
George Forbes 「History of Astronomy」
...This number is increased by approach andlowered by recession...
George Forbes 「History of Astronomy」
...The displacement of the lines being measured, we can calculatethe rate of approach or recession in miles per second...
George Forbes 「History of Astronomy」
...If towards the violet end, it means mutualapproach of the star and earth; if to the red end, it means recession...
George Forbes 「History of Astronomy」
...Assuming the alternate approach and recession tobe caused by orbital revolution, Belopolsky found that the body emittingthe light of the bright lines moved with an orbital velocity offorty-one miles...
Robert Stawell Ball 「The Story of the Heavens」
...Stars in the direction in which the earth was moving would not be thusaffected; there would be nothing in mere approach or recession to alterdirection or to make itself in any way visible...
Oliver Lodge 「Pioneers of Science」
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