A New Treatise on the Use of the Globes: With Notes and Observations : Containing an Extensive Collection of the Most Useful Problems, Illustrated by a Suitable Variety of Examples : Designed for the Use of Schools and AcademiesJohn J. Harrod, 1823 - 220 σελίδες |
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Συχνά εμφανιζόμενοι όροι και φράσεις
18 degrees 21st of December 21st of June 90 degrees analemma angle of position Antarctic circle Arctic circle Arcturus axis azimuth brass meridian Bring the given bring the sun's circle to 12 climate compass degrees north difference of longitude distance earth ecliptic Elevate the pole equal equator equinoctial EXAMPLES find the sun's frigid zone geographical miles given day given place given star globe eastward grees hence horizon hour circle index has passed inhabitants Libra longest day longest night longitude meridian altitude minutes past moon moon's New-York North Cape north latitude north or south north pole number of degrees o'clock oblique ascension orbit parallel of latitude Philadelphia places situated planet Prob PROBLEM quadrant of altitude required places right ascension rise and set RULE set the index south pole sun rises sun set sun vertical sun's altitude sun's declination sun's place tropic of Cancer tude turn the globe Washington western edge westward
Δημοφιλή αποσπάσματα
Σελίδα ii - BBOWN, of the said district, hath deposited in this office the title of a book, the right whereof he claims as author, in the words following, to wit : " Sertorius : or, the Roman Patriot.
Σελίδα 184 - Bring the sun's place in the ecliptic for the given day to the meridian, and set the index to XII. at noon : turn the globe westward till the index points to the given hour ; then the surface of the globe represents the exact face of the heavens at the given place.
Σελίδα 187 - Elevate the pole so many degrees above the horizon as are equal to the latitude of the place ; find the sun's place in the ecliptic, bring it to the brass meridian, and set the index of the...
Σελίδα 144 - Bring the sun's place to the eastern edge of the horizon, and set the index of the hour circle to 12 ; turn the globe eastward...
Σελίδα 161 - ... to 12 ; then, if the time be after noon, turn the globe westward on its axis, till the index has passed over as many hours as the time is past noon ; but, if the time be before noon, turn the globe eastward till the index has passed over as many hours as the time wants of noon...
Σελίδα 90 - Find the sun's declination and elevate the north or south pole, according as the declination is north or south so many degrees above the horizon, as are equal to the sun's declination ; bring the given place to the brass meridian, and set the index of the hour circle to 12.
Σελίδα 74 - RULE. Bring the given place to the brass meridian and set the index to twelve : turn the globe eastward till the index has passed over as many hours as are equal to...
Σελίδα ii - An Act for the encouragement of learning by securing the copies of maps charts and books to the authors and proprietors of such copies during the times therein mentioned,'* and extending the benefits thereof to the arts of designing engraving and etching historical and other prints, PHILIP MOORE.
Σελίδα 143 - Equator, rise or set in 50 minutes of time in all latitudes. But the Moon's motion is so nearly in the Ecliptic that we may consider her at present as moving in it. Now the different parts of the Ecliptic, on account of its obliquity to the Earth's axis, make very different angles with the horizon as they rise or set.
Σελίδα 43 - The names of the twelve signs are : 1. Aries, the Ram; 2. Taurus, the Bull; 3. Gemini, the Twins ; 4. Cancer, the Crab ; 5. Leo, the Lion ; 6. Virgo, the Virgin ; 7. Libra, the Balance; 8. Scorpio, the Scorpion; 9. Sagittarius, the Archer; 10. Capricornus, the Goat ; n.