Letters on Astronomy: Addressed to a Lady; in which the Elements of the Science are Familiarly Explained in Connexion with Its Literary History |
From inside the book
Results 1-5 of 59
Page 11
... matter in the universe tends towards every other . The three great laws of motion , also , are , when stated , so plain , that they seem hardly to assert any thing but what we knew before . That all bodies , if at rest , will continue ...
... matter in the universe tends towards every other . The three great laws of motion , also , are , when stated , so plain , that they seem hardly to assert any thing but what we knew before . That all bodies , if at rest , will continue ...
Page 35
... matter of the greatest difficulty to find pieces of glass , of a suitable quality for object - glasses , more than two or three inches in di- ameter . Hence , large achromatic telescopes are very expensive , being valued in proportion ...
... matter of the greatest difficulty to find pieces of glass , of a suitable quality for object - glasses , more than two or three inches in di- ameter . Hence , large achromatic telescopes are very expensive , being valued in proportion ...
Page 59
... matter - of - fact and unpoetical way of treating it , altogether uninteresting . What , then , is time ? Time is a measured portion of indefinite duration . It con- sists of equal portions cut off from eternity , as a line on the ...
... matter - of - fact and unpoetical way of treating it , altogether uninteresting . What , then , is time ? Time is a measured portion of indefinite duration . It con- sists of equal portions cut off from eternity , as a line on the ...
Page 71
... matter of very rational curi- osity , to investigate the precise shape of the planet on which Heaven has fixed our abode , yet the immense pains which has been bestowed on this subject has not all arisen from mere curiosity . No ...
... matter of very rational curi- osity , to investigate the precise shape of the planet on which Heaven has fixed our abode , yet the immense pains which has been bestowed on this subject has not all arisen from mere curiosity . No ...
Page 75
... matter of the greatest difficulty , to execute with exactness the measurement of a line of any great length in one continued direction on the earth's surface . Even if we select a level and open country , more or less ine- qualities of ...
... matter of the greatest difficulty , to execute with exactness the measurement of a line of any great length in one continued direction on the earth's surface . Even if we select a level and open country , more or less ine- qualities of ...
Other editions - View all
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