Bouvier's Familiar Astronomy, Or, An Introduction to the Study of the Heavens: Illustrated by Celestial Maps, and Upwards of 200 Finely Executed Engravings, to which is Added a Treatise on the Globes, and a Comprehensive Astronomical Dictionary : for the Use of Schools, Families, and Private StudentsChilds & Peterson, 1857 - 499 σελίδες |
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Αποτελέσματα 1 - 3 από τα 84.
Σελίδα 144
... visible . Q. Is the visible surface of comets EQUALLY BRILLIANT in every part ? A. Most comets have comparatively bright centres , surrounded by an envelope having a cloudy or hairy appearance . Q. What is the BRIGHTER CENTRE of a comet ...
... visible . Q. Is the visible surface of comets EQUALLY BRILLIANT in every part ? A. Most comets have comparatively bright centres , surrounded by an envelope having a cloudy or hairy appearance . Q. What is the BRIGHTER CENTRE of a comet ...
Σελίδα 160
... visible forms are mere points , too small to admit of angular measurement , even when seen through the most powerful telescopes . The eye is capable of perceiving very minute objects . Hueck states that spiders ' threads , that measure ...
... visible forms are mere points , too small to admit of angular measurement , even when seen through the most powerful telescopes . The eye is capable of perceiving very minute objects . Hueck states that spiders ' threads , that measure ...
Σελίδα 371
... visible , as well as the emersion at o ; so that the immer- sion and emersion would appear on the same side of the planet , after which the satellite would again be eclipsed by passing behind the body of the planet . For when the ...
... visible , as well as the emersion at o ; so that the immer- sion and emersion would appear on the same side of the planet , after which the satellite would again be eclipsed by passing behind the body of the planet . For when the ...
Περιεχόμενα
PHYSICAL ASTRONOMY | 15 |
Angular Measurement | 27 |
VLSatellites | 60 |
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Άλλες εκδόσεις - Προβολή όλων
Bouvier's Familiar Astronomy, Or an Introduction to the Study of the Heavens ... Hannah Mary Bouvier Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Bouvier's Familiar Astronomy, Or an Introduction to the Study of the Heavens ... Hannah Mary Bouvier Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Συχνά εμφανιζόμενοι όροι και φράσεις
altitude angular appear Argo Navis Aries asteroid astronomical attraction axis azimuth Boötes brass meridian bright star called celestial centre circle comet constella constellation Cor Caroli degrees diameter disc discovered discovery distance double stars Earth Earth's orbit east eclipse equal equator equinoctial equinox figure fixed stars globe gravity heavenly bodies heavens hemisphere horizon hundred instrument Jupiter known latitude longitude lunar magnitude Mars means Mercury month Moon Moon's motion move nebula node northern object observations Observatory orbit parallax parallel passing perihelion period planet Polar pole Pole Star position principal star quadrant rays of light refraction represents revolution revolve round right ascension ring rising round the Sun satellite Saturn seen shadow sidereal Sir William Herschel Sirius situated solar southern constellation sphere Sun's place supposed surface telescope tion transit Uranus Ursa Ursa Major velocity Venus vertical visible zenith zodiac