Memoir of Henry Draper: 1837 1882 (Classic Reprint)
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Memoir of Henry Draper
EN NWISBN: 9781332155781 bzw. 1332155782, in Englisch, Forgotten Books, neu.
Lieferung aus: Vereinigtes Königreich Großbritannien und Nordirland, in-stock.
Excerpt from Memoir of Henry Draper: 1837 1882 Mr. President and Gentlemen of the Academy: Of all the marvelous results which have been obtained by what has been felicitously styled the New Astronomy, perhaps none exceed in importance or in value those which have been obtained by the aid of photography. While the older or mathematical astronomy, so called, has had to do with positions and magnitudes and motions essentially, all expressible by the aid of suitable symbols in the form of more or less complex functions, the newer or physical astronomy has concerned itself largely with physical phenomena and appearances, the completest attainable record of which is essential to their successful interpretation. True, the contacts of an eclipse and the path of a transit, when registered by photography, have greatly aided the comparison of theory with observation in mathematical astronomy. But the value of photography here is inconsiderable when compared with that of the record which it can furnish of the lunar and solar surfaces, of the distribution of stars in a group, of the configuration of a nebula, or of the arrangement of lines in a solar or stellar spectrum. Indeed, the facility of reproduction by photographic means so far surpasses that by drawing or sketching, and is, moreover, so much more accurate a method of delineation, that the evidence given by an untouched photograph is everywhere accepted prima facie proof. Among those who have assiduously devoted themselves to the evolution of astronomical photography in its many-sided relations, none, it will be conceded, has accomplished more and none, therefore, more richly deserves the reward of full recognition from his fellow-workers, than our late member, Henry Draper, the accomplished investigator, scientist, and teacher, who is the subject of the present sketch. Henry Draper was born in Prince Edward county, Virginia, on the 7th of March, 1837. His distinguished father, John William Draper, who had c.
Excerpt from Memoir of Henry Draper: 1837 1882 Mr. President and Gentlemen of the Academy: Of all the marvelous results which have been obtained by what has been felicitously styled the New Astronomy, perhaps none exceed in importance or in value those which have been obtained by the aid of photography. While the older or mathematical astronomy, so called, has had to do with positions and magnitudes and motions essentially, all expressible by the aid of suitable symbols in the form of more or less complex functions, the newer or physical astronomy has concerned itself largely with physical phenomena and appearances, the completest attainable record of which is essential to their successful interpretation. True, the contacts of an eclipse and the path of a transit, when registered by photography, have greatly aided the comparison of theory with observation in mathematical astronomy. But the value of photography here is inconsiderable when compared with that of the record which it can furnish of the lunar and solar surfaces, of the distribution of stars in a group, of the configuration of a nebula, or of the arrangement of lines in a solar or stellar spectrum. Indeed, the facility of reproduction by photographic means so far surpasses that by drawing or sketching, and is, moreover, so much more accurate a method of delineation, that the evidence given by an untouched photograph is everywhere accepted prima facie proof. Among those who have assiduously devoted themselves to the evolution of astronomical photography in its many-sided relations, none, it will be conceded, has accomplished more and none, therefore, more richly deserves the reward of full recognition from his fellow-workers, than our late member, Henry Draper, the accomplished investigator, scientist, and teacher, who is the subject of the present sketch. Henry Draper was born in Prince Edward county, Virginia, on the 7th of March, 1837. His distinguished father, John William Draper, who had c.
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Memoir of Henry Draper: 1837 1882 (Classic Reprint)
EN NWISBN: 9781332155781 bzw. 1332155782, in Englisch, FB &c Ltd, neu.
Lieferung aus: Kanada, In Stock, plus shipping.
George F. Barker, Books, Science and Nature, Memoir of Henry Draper: 1837 1882 (Classic Reprint), Memoir of Henry Draper: 1837 1882 (Classic Reprint).
George F. Barker, Books, Science and Nature, Memoir of Henry Draper: 1837 1882 (Classic Reprint), Memoir of Henry Draper: 1837 1882 (Classic Reprint).
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