Letters on Astronomy: Addressed to a Lady; in which the Elements of the Science are Familiarly Explained in Connexion with Its Literary History |
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Page 14
... known of the science by the Alexandrian school . The Almagest ' was the principal text - book in astronomy , for many centuries afterwards , and com- paratively few improvements were made until the age of Copernicus . Copernicus was ...
... known of the science by the Alexandrian school . The Almagest ' was the principal text - book in astronomy , for many centuries afterwards , and com- paratively few improvements were made until the age of Copernicus . Copernicus was ...
Page 15
... known to be the true theory of the celestial motions , in which the sun is placed in the centre of the solar system , and the earth and all the planets are made to revolve around him , from west to east , while the apparent diurnal ...
... known to be the true theory of the celestial motions , in which the sun is placed in the centre of the solar system , and the earth and all the planets are made to revolve around him , from west to east , while the apparent diurnal ...
Page 17
... known respecting the sun , moon , planets , com- ets , and fixed stars ; and also to explain the methods by which this knowledge is acquired . Astronomy is some- times divided into descriptive , physical , and practical . Descriptive ...
... known respecting the sun , moon , planets , com- ets , and fixed stars ; and also to explain the methods by which this knowledge is acquired . Astronomy is some- times divided into descriptive , physical , and practical . Descriptive ...
Page 36
... known dimensions . The reflector alone weighed nearly a ton . So large and ponderous an instrument must require a vast deal of machinery to work it , and to keep it steady ; and , accordingly , the frame - work surrounding it was formed ...
... known dimensions . The reflector alone weighed nearly a ton . So large and ponderous an instrument must require a vast deal of machinery to work it , and to keep it steady ; and , accordingly , the frame - work surrounding it was formed ...
Page 47
... known to the Emperor , who invited him to Prague , where , with an ample stipend , he resumed his labors . But , though surrounded with affectionate friends and admiring disciples , he was still an exile in a foreign land . Although his ...
... known to the Emperor , who invited him to Prague , where , with an ample stipend , he resumed his labors . But , though surrounded with affectionate friends and admiring disciples , he was still an exile in a foreign land . Although his ...
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Common terms and phrases
angle appear ascertain astronomers atmosphere attraction axis called celestial centre circle comet conjunction constellation degrees diameter direction discovery disk distance diurnal motion doctrine double stars earth ecliptic equal equator equinox exhibited fact fixed stars force Galileo globe gravity greater greatest half Halley's comet heavenly bodies heavens Hence Herschel horizon hundred inferior conjunction instrument John Herschel Jupiter Kepler latitude laws length less light longitude lunar lunar eclipse magnitude measure Mercury meridian meteors millions of miles minutes moon moon's motion move Nature nearer nearly node objects observations opposite orbit parallax passing perihelion period phenomena planetary planets pole respect revolve right ascension ring round satellites Saturn seen shadow side space spectator sphere sun's superior planets supposed surface telescope thousand tides tion truth Tycho Tycho Brahe universal gravitation Uranus velocity Venus vernal equinox visible west to east