A Manual of Astronomy and the Use of the Globes ...Ivison & Phinney, 1854 |
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Page xi
... surface of the earth . About 250 years after Hipparchus , flourished the celebrated Ptolemy . He published several works , con- taining everything then known of the science of astron- omy , and , in one of them , explained a new and ...
... surface of the earth . About 250 years after Hipparchus , flourished the celebrated Ptolemy . He published several works , con- taining everything then known of the science of astron- omy , and , in one of them , explained a new and ...
Page 17
... surface . Circles drawn on the surface of a sphere are of two kinds , great and small . Great circles are those which divide the globe into two equal parts . What is a quadrant ? What is an ellipse ? What are the longest and short- est ...
... surface . Circles drawn on the surface of a sphere are of two kinds , great and small . Great circles are those which divide the globe into two equal parts . What is a quadrant ? What is an ellipse ? What are the longest and short- est ...
Page 18
... surface of the sphere , equally distant from every part of its circumference . An oblate spheroid is a sphere flattened at the poles . The plane of a figure , is the imaginary even surface on which it may be supposed to be described ...
... surface of the sphere , equally distant from every part of its circumference . An oblate spheroid is a sphere flattened at the poles . The plane of a figure , is the imaginary even surface on which it may be supposed to be described ...
Page 21
... surface which it presents to our view . A Digit is the twelfth part of the diameter of the disc . ΟΜ Fig . 10 . M " V OE OM ' The Axis of a body , is an imaginary line around which it revolves . Diurnal rotation is the revolution of a ...
... surface which it presents to our view . A Digit is the twelfth part of the diameter of the disc . ΟΜ Fig . 10 . M " V OE OM ' The Axis of a body , is an imaginary line around which it revolves . Diurnal rotation is the revolution of a ...
Page 27
... surface . The Celestial globe represents the sphere of the heav- ens , in the centre of which the earth appears to be placed . The Constellations , together with the various circles used in astronomy , are laid down on its surface . A ...
... surface . The Celestial globe represents the sphere of the heav- ens , in the centre of which the earth appears to be placed . The Constellations , together with the various circles used in astronomy , are laid down on its surface . A ...
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Common terms and phrases
75 cents 90 degrees annual revolution aphelion apparent motion apsis Aries Asteroids astronomy atmosphere axis brazen meridian called Cancer Cape Capricorn caused centre CHAPTER circle of perpetual clock comets Constellations declination density diameter disc distance diurnal parallax earth ecliptic ecliptic limit equator equinoctial points equinoxes find the Sun's Fixed Stars following places Frigid zone given place heavenly body heavens horizon hour inferior conjunction inferior planets Jupiter latitude and longitude longest day lunar eclipse Mars Mercury meridian miles Moon's Nebula node north or south north pole northern hemisphere number of degrees NUMBER OF STARS o'clock opaque bodies opposite parallax parallel passes perihelion Perioeci polar circle precession primary planets PROBLEM quadrature refraction represent revolve right ascension rise Satellites Saturn set the index sidereal day Solar System sphere sun enters Sun's place superior conjunction supposed surface telescope tion Torrid tropic turn the globe Uranus velocity Venus vertical circle York zenith zodiac
Popular passages
Page 16 - The circumference of every circle is supposed to be divided into 360 equal parts, • called degrees, each degree into 60 minutes, and each minute into 60 seconds, etc.
Page 98 - Lay the graduated edge of the quadrant over both places, so that the division marked 0 may be on one of them ; and the number of degrees between them, reduced to miles, will be the distance required.
Page 17 - A CIRCLE is a plane figure, bounded by a curved, line, every point of which is equally distant from a point within, called the centre.
Page 8 - History of the United States for the use of Schools and Academies," " The American Speaker,
Page 28 - The tropics are two small circles parallel to the equator at the distance of 23° 28' from it ; the northern, is called the tropic of cancer, and the southern, the tropic of Capricorn. — [Fig. 2.] 64. The tropics are the limits of the torrid zone. 65. The polar circles are small circles parallel to the equator, at the distance of 66° 32' from it, or 23° 28
Page 12 - College, embracing his Course of Theological Lectures, his Academic Addresses, and a selection from his Sermons, with a Memoir of his Life and Character. 2 Vols. 8vo. $3.00. "They will ever form standard volumes in American Theological Literature.
Page 36 - The DECLINATION of a heavenly body is its distance north or south of the celestial equator, measured on a meridian.
Page 31 - Vertical circles are those which pass through the poles of the horizon, (the zenith and nadir,) perpendicular to it. The meridian is that vertical circle which passes through the north and south points. The prime vertical is that vertical circle which passes through the east and west points. The altitude of a body is its elevation above the horizon, measured on a vertical circle. The azimuth of a body is its distance, measured on the horizon, from the meridian to a vertical circle passing through...
Page 113 - Make the elevation of the pole equal to the latitude of the place ; find the sun's place in the ecliptic, bring it to the meridian, and set the index to 12.
Page 3 - Elements of Chemistry, containing the Principles of the Science, both experimental and theoretical ; intended as a Text-book for Academies, High Schools and Colleges : by Alonzo Gray, AM, Teacher of Chemistry and Nat. Hist, in the Teachers