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 |
Z wnętrza książki
Wyniki 1 - 5 z 39
Strona 47
... namely , in 1676. The great interests of the British nation , which are involved in navigation , constituted the ruling motive with the government to lend their aid in erecting and maintaining this observatory . * Brewster's Life of ...
... namely , in 1676. The great interests of the British nation , which are involved in navigation , constituted the ruling motive with the government to lend their aid in erecting and maintaining this observatory . * Brewster's Life of ...
Strona 55
... namely , to measure arcs of the meridian , as meridian altitudes , zenith distances , north polar dis- tances , and declinations ; but as that circle must nec- essarily be small , and therefore incapable of measuring very minute angles ...
... namely , to measure arcs of the meridian , as meridian altitudes , zenith distances , north polar dis- tances , and declinations ; but as that circle must nec- essarily be small , and therefore incapable of measuring very minute angles ...
Strona 61
... namely , at twelve o'clock at night , and counted by twelve hours from the lower to the upper meridian , and from the upper to the lower . The astronomical day is the apparent solar day counted through the whole twenty - four hours ...
... namely , at twelve o'clock at night , and counted by twelve hours from the lower to the upper meridian , and from the upper to the lower . The astronomical day is the apparent solar day counted through the whole twenty - four hours ...
Strona 62
... namely , April fifteenth , June fifteenth , September first , and December twenty - fourth . Astronomical clocks are made of the best workman- ship , with every advantage that can promote their reg- ularity . Although they are brought ...
... namely , April fifteenth , June fifteenth , September first , and December twenty - fourth . Astronomical clocks are made of the best workman- ship , with every advantage that can promote their reg- ularity . Although they are brought ...
Strona 78
... namely , at A and at O , we could determine the difference of latitude between these two points . Suppose , for example , that the distance be- tween A and O is exactly five degrees , and that the length of the intervening line is three ...
... namely , at A and at O , we could determine the difference of latitude between these two points . Suppose , for example , that the distance be- tween A and O is exactly five degrees , and that the length of the intervening line is three ...
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
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