A Short History of Natural Science and of the Progress of Discovery: From the Time of the Greeks to the Present Day : for the Use of Schools and Young PersonsD. Appleton, 1886 - 467 páginas |
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Página 15
... was also a great student of nature . He was born at Stagira , in Thrace , 384 B.C. , but studied at Athens under Plato , and afterwards became the tutor of Alexander the Great . Aristotle did much for astronomy , by collecting.
... was also a great student of nature . He was born at Stagira , in Thrace , 384 B.C. , but studied at Athens under Plato , and afterwards became the tutor of Alexander the Great . Aristotle did much for astronomy , by collecting.
Página 16
... collecting and comparing the discoveries of the astronomers who came before him . He is the first of the Greek writers who states very decidedly that the earth must be a round globe , and he discovered an eclipse , or occultation as it ...
... collecting and comparing the discoveries of the astronomers who came before him . He is the first of the Greek writers who states very decidedly that the earth must be a round globe , and he discovered an eclipse , or occultation as it ...
Página 21
... collected together the problems in the ' Elements of Euclid , ' known to every schoolboy . He was born at Alexandria about 300 B.C. His works are too difficult for us to examine , and the only discovery of his we can mention is , that ...
... collected together the problems in the ' Elements of Euclid , ' known to every schoolboy . He was born at Alexandria about 300 B.C. His works are too difficult for us to examine , and the only discovery of his we can mention is , that ...
Página 29
... . Hipparchus , 160. - Nearly one hundred years after Eratosthenes , the great astronomer Hipparchus was born , 160 B.C. Hipparchus was the most famous of all the astro- nomers who lived before the Christian era . He collected.
... . Hipparchus , 160. - Nearly one hundred years after Eratosthenes , the great astronomer Hipparchus was born , 160 B.C. Hipparchus was the most famous of all the astro- nomers who lived before the Christian era . He collected.
Página 30
... collected and examined all the discoveries made by the earlier obser- vers , and made many new observations ; but astronomy had now become so complicated that the problems are too diffi cult to be explained here . Hipparchus made a ...
... collected and examined all the discoveries made by the earlier obser- vers , and made many new observations ; but astronomy had now become so complicated that the problems are too diffi cult to be explained here . Hipparchus made a ...
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Términos y frases comunes
acid Alhazen anatomy animals astronomers attraction battery began bodies born calculations called cause CENTURY CONTINUED Charles Lyell chemical chemistry chemists colours comet Cuvier cylinder dark died discovered discoveries earth eighteenth century electric current Encyclopædia Encyclopædia Britannica Erasistratus exactly experiments explained facts famous formed fossils Galileo Galvani Geber Geology glass globe going gravitation Greeks Haller heat Herschel Hipparchus Huyghens hydrogen invented John Herschel Jupiter Kepler Lagrange Lamarck Laplace lines Linnæus living magnet mercury metals meteors moon moving round named Natural needle Newton observations orbit oxygen pass phlogiston piece piston planets prism produced Professor proved Ptolemy refracted remember rocks round the sun showed side spectrum St.-Hilaire stars steam substances telescope theory tion transit of Venus tricity tube turned Uranus Venus Vesalius vibrations Voltaic Pile Watt waves weight wire young
Pasajes populares
Página 125 - Our business was (precluding matters of Theology and state affairs) to discourse and consider of Philosophical Enquiries, and such as related thereunto : as physick, anatomy, geometry, astronomy, navigation, staticks, magneticks, chymicks, mechanicks, and natural experiments ; with the state of these studies, as then cultivated at home and abroad.
Página 101 - ... that the squares of the periodic times of the planets are proportional to the cubes of their mean distances from the sun.
Página 125 - Saturn, the spots in the sun, and its turning on its own axis", the inequalities and selenography of the moon, the several phases of Venus and Mercury, the improvement of telescopes, and grinding of glasses for that purpose, the weight of air, the possibility, or impossibility of vacuities, and nature's abhorrence thereof, the Torricellian experiment in quicksilver, the descent of heavy bodies, and the degrees of acceleration therein ; and divers other things of like nature.
Página 234 - The feeling of it to my lungs was not sensibly different from that of common air ; but I fancied that my breast felt peculiarly light and easy for some time afterwards. Who can tell but that, in time, this pure air may become a fashionable article in luxury Hitherto only two mice and myself have had the privilege of breathing it."* * Dr.
Página 170 - I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.