"A is one that undergoes a change in brightness. With some stars the change is as great as four or even six , while with others it may be only one magnitude, and in some cases as small as half a magnitude. This change in brightness is observed by comparing the light of the variable with the light of some standard star which is assumed to be constant in brightness, the comparison being made either directly, or through the medium of some sort of artificial star."
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Columbia University alumniWomen academics from the United StatesAstronomers from the United StatesVassar College alumniVassar College faculty
Original Language: English
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{{cite book|title=An Introduction to the Study of Variable Stars|series=Vassar semi-centennial series|
https://en.wikiquote.org/wiki/Caroline_Furness
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Caroline Furness
(June 24, 1869 – February 9, 1936) was an American astronomer, professor at , and director of the from 1911 to 1936, when she died and was succeeded by . Furness was elected in 1899 a Fellow of the (AAAS).
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