Meteors |
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Common terms and phrases
actually altitude apex appeared April assumed Astr astronomical units atmosphere August average axis Bielids bodies bolide Brédikhine calculated Catalogue comet's orbit cometary computed conclusions coördinates crater D₂ Denning Denning's density derived deviation diameter direction discussion distance E. E. Barnard earth earth's orbit ecliptic equation explain fireballs further Geminids give given Halley's Comet hence hyperbolic hypothesis inclination Jour Jupiter km./sec large number latter Leonids Lyrids mass maximum mentioned meteor showers meteor stream meteorites meteors observed miles Monthly motion moving Newton Niessl night node November November 13 number of meteors Observatory original Orionids parabolic velocity path perigee perihelion period Perseids perturbations phenomenon planet position proved published quoted radiant point relative velocity retrograde retrograde motion Schiaparelli seen semi-major axis sin² solar system space stationary radiants surface telescope theory tion values visible W. H. Pickering writer zenith attraction
Popular passages
Page xxii - And it came to pass as they fled from before Israel, and were in the going down to Bethhoron, that the Lord cast down great stones from heaven upon them, unto Azekah, and they died ; they were more which died with hailstones, than they whom the children of Israel slew with the sword.
Page 1 - Ye men of Ephesus, what man is there that knoweth not how that the city of the Ephesians is a worshipper of the great goddess Diana, and of the image which fell down from Jupiter?
Page 24 - I was called up about three o'clock in the morning, to see the shooting stars, as they are called. The phenomenon was grand and awful. The whole heavens appeared as if illuminated with sky-rockets, which disappeared only by the light of the sun after daybreak. The meteors, which at any one instant of time appeared as numerous as the stars, flew in all possible directions, except from the earth...
Page 25 - It would seem as if worlds upon worlds from the infinity of space were rushing like a whirlwind to our globe . . . and the stars descended like a snowfall to earth.
Page 125 - Fig. 19, drawn in accordance with this table, give the approximate composition and barometric pressure of the atmosphere at various levels. The assumptions upon which they are based are in close agreement with the average conditions of middle latitudes, and are as follows : TABLE II.
Page 27 - November 13th, 1833 emanated from a nebulous body which was then pursuing its way along with the earth around the sun ; that this body continues to revolve around the sun in an elliptical orbit, but little inclined to the plane of the ecliptic, and having its aphelion near the orbit of the earth ; and finally, that the body has a period of nearly six months, and that its perihelion is a little within the orbit of Mercury.
Page 24 - ... the appearance of these meteors was striking and splendid, beyond any thing of the kind he has ever witnessed.
Page 24 - ... called. The phenomenon was grand and awful. The whole heavens appeared as if illuminated with sky-rockets, which disappeared only by the light of the sun after daybreak. The meteors, which at any one instant of time appeared as numerous as the stars, flew in all possible directions, except from the earth, towards which they all inclined more or less ; and some of them descended perpendicularly over the vessel we were in, so that I was in constant expectation of their falling on us.
Page 63 - One, in particular, appeared to fall from the zenith, of the apparent size of a ball of eighteen inches diameter, that lighted for several seconds the whole hemisphere. During the continuance of this remarkable phenomenon, a hissing noise in the air was plainly heard, and several reports, resembling the discharge of a pistol.