Popular Astronomy, Τόμος 8;Τόμος 1900Goodsell Observatory of Carleton College, 1900 |
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Σελίδα
... was published by Euler in the Memoirs of the Berlin Academy , 1743. It is given in his work on the orbit of the Comet of March , 1742. Euler gives two demonstrations , and finds 2 The Euler - Lambert Equation for Parabolic Motion .
... was published by Euler in the Memoirs of the Berlin Academy , 1743. It is given in his work on the orbit of the Comet of March , 1742. Euler gives two demonstrations , and finds 2 The Euler - Lambert Equation for Parabolic Motion .
Σελίδα 1
... comet is to make by trial the computed interval of time agree with the observed interval . He also tries the theory of an ellipse , assuming that the semi para- meter is to the perihelion distance as 2 - a is to 1 and finds a = 0.06047 ...
... comet is to make by trial the computed interval of time agree with the observed interval . He also tries the theory of an ellipse , assuming that the semi para- meter is to the perihelion distance as 2 - a is to 1 and finds a = 0.06047 ...
Σελίδα 26
... Comets have exhibited won- derful transformations , distortions and internal movements ut- terly undiscoverable by the best telescopes alone . Asteroids so numerous leave the record of their existence in trails upon the plates that , as ...
... Comets have exhibited won- derful transformations , distortions and internal movements ut- terly undiscoverable by the best telescopes alone . Asteroids so numerous leave the record of their existence in trails upon the plates that , as ...
Σελίδα 39
... municated to us by Professor H. A. Howe , Director of the Chamberlin Observa- tory of the University of Denver , Col. , and is given on another page . 20 ASP HORLEON COMETS . Three periodic comets are expected to Astronomical Phenomena .
... municated to us by Professor H. A. Howe , Director of the Chamberlin Observa- tory of the University of Denver , Col. , and is given on another page . 20 ASP HORLEON COMETS . Three periodic comets are expected to Astronomical Phenomena .
Σελίδα 40
ASP HORLEON COMETS . Three periodic comets are expected to return to perihelion this year . All are faint and can only be ... comet , discovered in 1886 seen again at its return in 1893 , should be at perihelion about the end of February ...
ASP HORLEON COMETS . Three periodic comets are expected to return to perihelion this year . All are faint and can only be ... comet , discovered in 1886 seen again at its return in 1893 , should be at perihelion about the end of February ...
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
Algol Allegheny Observatory angle aperture appear astronomical Astrophysical axis bright Ceti chart circle clouds College comet coördinates corona craters curve Cygni determined diameter Director disc discovery distance double stars Earth ephemeris equator equatorial Eros Euclid exposure faint geometry give given Greenwich Harvard College Observatory Herculis hour hour angle inches instrument interest July Jupiter lens Leonids Lick Observatory light magnitude Mars means measures Mercury meridian meteors micrometer minima minutes Moon Moon's motion nebula night non-Euclidean geometry objects observations obtained orbit parallax path period perpendicular photographic planet plate polar POPULAR ASTRONOMY position Professor Keeler published reflector refractor right ascension satellite Saturn seen Sept shadow bands solar solar eclipse spectra spectroscopic spectrum SS Cygni straight Sun's surface telescope tion total eclipse triangle University Variable Stars Venus visible Yerkes Yerkes Observatory
Δημοφιλή αποσπάσματα
Σελίδα 476 - WHAT are we set on earth for ? Say, to toil; Nor seek to leave thy tending of the vines For all the heat o' the day, till it declines, And death's mild curfew shall from work assoil. God did anoint thee with his odorous oil, To wrestle, not to reign; and he assigns All thy tears over, like pure crystallines, For younger fellow-workers of the soil To wear for amulets. So others shall Take patience...
Σελίδα 74 - ... as if there were sought in knowledge a couch whereupon to rest a searching and restless spirit; or a terrace for a wandering and variable mind to walk up and down with a fair prospect; or a tower of state for a proud mind to raise itself upon; or a fort or commanding ground for strife and contention; or a shop for profit or sale; and not a rich storehouse for the glory of the Creator and the relief of man's estate.
Σελίδα 75 - ... a couch, whereupon to rest a searching and restless spirit; or a terrace, for a wandering and variable mind to walk up and down with a fair prospect; or a tower of state, for a proud mind to raise itself upon; or a fort or commanding ground, for strife and contention; or a shop, for profit or sale; and not a rich storehouse, for the glory of the Creator and the relief of man's estate.
Σελίδα 262 - It was about half past nine o'clock on the night of the 10th, the moon having then advanced within four days of her mean libration, that the astronomer adjusted his instruments for the inspection of her eastern limb. The whole immense power of his telescope was applied, and to its focal image about onehalf of the power of his microscope. On removing the screen of the latter, the field of view was covered throughout its entire area with a beautifully distinct, and even vivid representation of basaltic...
Σελίδα 532 - We see it as Columbus saw America from the shores of Spain. Its movements have been felt, trembling along the far-reaching line of our analysis, with a certainty hardly inferior to that of ocular demonstration.
Σελίδα 60 - O, swear not by the moon, the inconstant moon, That monthly changes in her circled orb, Lest that thy love prove likewise variable.
Σελίδα 263 - They averaged four feet in height, were covered, except on the face, with short and glossy copper-colored hair, and had wings composed of a thin membrane, without hair, lying snugly upon their backs, from the top of the shoulders to the calves of the legs.
Σελίδα 262 - The next animal perceived would be classed on earth as a monster. It was of a bluish lead color, about the size of a goat, with a head and beard like him, and a single horn, slightly inclined forward from the perpendicular. The female was destitute of the horn and beard, but had a much longer tail.
Σελίδα 273 - The perpendiculars erected at the middle points of the sides of a triangle meet in a point...
Σελίδα 276 - They declare that points, straight lines or circles, such as the problem requires to be constructed, are possible under all conditions, or they determine any exceptions that there may be.