 | John Bigland, Jedidiah Morse - Geography - 1812 - 470 pages
...centre about 490,000 miles ; its heat was consequently 2000 limes greater than that of red-hot iron. In that part of its orbit which is nearest to the Sun, it moves with the astonishing velocity of 880,000 miles per hour. The amazing distance to which the... | |
 | Jeremiah Joyce - Astronomy - 1815 - 680 pages
...Mercury at the rate of 105,OOO miles in an hour. But here we come to a comet whose progressive motion in that part of its orbit which is nearest to the sun, is more than equal to eight times the velocity of Mercury. Charles. Were not comets formerly dreaded,... | |
 | Jeremiah Joyce - Astronomy - 1828 - 262 pages
...Mercury at the rate of 105,000 miles in an hour. But here we come to a comet, whose progressive motion, in that part of its orbit which is nearest to the sun, is more than equal to eight times the velocity of Mercury. Charles. Were not comets formerly dreaded... | |
 | William Prout - Chemistry - 1834 - 616 pages
...occupies one of the foci. Now, it has been so arranged, that in the middle of our \dnter, the earth is in that part of its orbit which is nearest to the sun. The earth, therefore, is at Christmas actually about three millions of miles nearer to the sun than... | |
 | Natural theology - 1836 - 300 pages
...occupies one of the foci. Now, it has been so arranged, that in the middle of our winter, the earth is in that part of its orbit which is nearest to the sun. The earth, therefore, is at Christmas actually about three millions of miles nearer to the sun than... | |
 | Thomas Chalmers - Human beings - 1836 - 572 pages
...occupies one of the foci. Now, it has been so arranged, that in the middle of our winter, the earth is in that part of its orbit which is nearest to the sun. The earth, therefore, is at Christmas actually about three millions of miles nearer to the sun than... | |
 | William Guthrie - 1843 - 848 pages
...while about 490,000 miles, being less than one third part of the sun's semi-diameter from hie surface. in that part of its orbit which is nearest to the sun, it flies with the amazing velocity of 880,000 miles in an hour; and the sun, as seen from it, appears... | |
 | Robert Sullivan - Geography - 1859 - 438 pages
...danger is over. For though the earth will be attracted most powerfully at E, being in PERIHELION, or in that part of its orbit which is nearest to the sun, the velocity which it has acquired in approaching the sun will increase its centrifugal force, so as... | |
 | Robert Joseph Sullivan - Geography - 1861 - 364 pages
...danger is over. For though the earth will be attracted most powerfully at E, being in PERIHELION, or in that part of its orbit which is nearest to the sun, the velocity which it has acquired in approaching the sun will increase its centrifugal force, so as... | |
 | Robert Sullivan - Geography - 1862 - 432 pages
...danger is over. For though the earth will be attracted most powerfully at E, being in PERIHELION, or in that part of its orbit which is nearest to the sun, the velocity which it has acquired in approaching the sun will increase its centrifugal force, so as... | |
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Kepler made out was this : that the orbits of planets are ellipses. Another important thing made out was this: that the planets describing these ellipses move with very different velocities at different times. Each planet, when in that part of its orbit... 
