Letters on Astronomy: Addressed to a Lady; in which the Elements of the Science are Familiarly Explained in Connexion with Its Literary HistoryMarsh, Capen, Lyon and Webb, 1841 - 419 |
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Strona 9
... cause delays The Summer nights , and shortens Winter days . " M- Dryden's Virgil . DEAR MADAM , —In the conversation we recently held on the study of Astronomy , you expressed a strong desire to become better acquainted with this noble ...
... cause delays The Summer nights , and shortens Winter days . " M- Dryden's Virgil . DEAR MADAM , —In the conversation we recently held on the study of Astronomy , you expressed a strong desire to become better acquainted with this noble ...
Strona 16
... causes of any events by first examining and classifying all the facts that relate to it , and , from the comparison of these , to deduce our conclusions . But the greatest single discovery , that has ever been made in astronomy , was ...
... causes of any events by first examining and classifying all the facts that relate to it , and , from the comparison of these , to deduce our conclusions . But the greatest single discovery , that has ever been made in astronomy , was ...
Strona 17
... causes ; practical astronomy , the means of investi- gating the facts , whether by instruments or by calcu- lation . It is the province of descriptive astronomy to observe , classify , and record , all the phenomena of the heavenly ...
... causes ; practical astronomy , the means of investi- gating the facts , whether by instruments or by calcu- lation . It is the province of descriptive astronomy to observe , classify , and record , all the phenomena of the heavenly ...
Strona 29
... Cause . " - Beattie . IF , as I trust , you have gained a clear and familiar knowledge of the circles and divisions of the sphere , and of the mode of estimating the position of a heav- enly body by its azimuth and altitude , or by its ...
... Cause . " - Beattie . IF , as I trust , you have gained a clear and familiar knowledge of the circles and divisions of the sphere , and of the mode of estimating the position of a heav- enly body by its azimuth and altitude , or by its ...
Strona 39
... - dium . The same cause operates when a current of hot air rises from a chimney ; and hence the state of the atmosphere in cities and large towns is very unfavora- ble to the astronomer , on this account , as TELESCOPE . 39.
... - dium . The same cause operates when a current of hot air rises from a chimney ; and hence the state of the atmosphere in cities and large towns is very unfavora- ble to the astronomer , on this account , as TELESCOPE . 39.
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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