A New Treatise on the Use of the Globes; Or, A Philosophical View of the Earth and Heavens1821 |
Contents
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Common terms and phrases
Aldebaran analemma angle Answer appear Arcturus astronomers atmosphere axis azimuth body Boötes brass meridian Bring the given Cape constellations difference diurnal diurnal motion east eastern eastward ecliptic Elevate the pole English miles Epact equal equator equinoctial figure find the sun's fixed stars full moon given place globe westward heavens hence high water horizon hour circle index has passed inhabitants Jupiter latitude length Libra London longest day longitude magnitude Mars mean distance Mercury meridian altitude minutes month moon's morning motion night node noon north latitude north pole number of degrees o'clock oblique observed orbit Paschal full moon planet Pleiades PROBLEM quadrant of altitude rays revolution revolves round right ascension rise and set round the sun satellites Saturn semi-diameters set the index shew situated solar south pole sun rises sun's declination sun's place surface telescope tides tude turn the globe vapours Venus vertical zenith zone
Popular passages
Page 53 - Every body continues in its state of rest or uniform motion in a straight line except in so far as it is compelled by external forces to change that state.
Page 72 - In this case, it is obvious that the plane of the circle of illumination would be perpendicular to a line drawn from the centre of the sun to the centre of the earth...
Page 186 - RULES TO KNOW WHEN THE MOVEABLE FEASTS AND HOLYDAYS BEGIN. EASTER DAY, on which the rest depend, is always the First Sunday after the Full Moon which happens upon, or next after the Twenty-first Day of March ; and if the Full Moon happens upon a Sunday, Easter Day is the Sunday after.
Page 310 - ... the western edge of the horizon, and the index will show the time of...
Page 259 - Elevate the globe to so many degrees above the horizon as are equal to the latitude of the place...
Page 150 - The time which this planet takes to revolve on its axis, and the inclination of its axis to the plane of its orbit, have been given by different astronomers ; but Dr. Herschel, from a long series of observations on this planet, published in the Philosophical Transactions for 1793, concludes, that the time of this planet's rotation on its axis is uncertain, and that the position of...
Page 15 - ANTOECI are those who live in the same degree of longitude, and in equal degrees of latitude, but the one in north and the other in south latitude. They have noon at the same time, but contrary seasons of the year ; consequently, the length of the days to the one, is equal to the length of the nights to the other. Those who live at the equator can have no Antoeci.
Page 256 - Problem 12 : ihen elevate the pole as many degrees above the horizon as are equal to the latitude of that place, and bring it to the brass meridian ; so will it then be the zenith or centre of the horizon.
Page 257 - Elevate the pole so many degrees above the horizon as are equal to the latitude of the place and screw the quadrant of altitude on the brass meridian over that latitude...