 | 1833 - 618 pages
...circle of 654 feet ; Juno, Ceres, Vesta, and Pallas, grains of sand, in orbits of from 1000 to 12,000 feet; Jupiter a moderate-sized orange, in a circle...question. To imitate the motions of the planets, in the above-mentioned orbits, Mercury must describe its own diameter in 41 seconds ; Venus, in 4 minutes... | |
 | Sir John Frederick William Herschel - Astronomy - 1833 - 444 pages
...mile across ; Saturn a small orange, on a circle of four-fifths of a mile ; and Uranus a full sized cherry, or small plum, upon the circumference of a...question. To imitate the motions of the planets, in the above mentioned orbits, Mercury must describe its own diameter in 41 seconds; Venus, in 4ni 14s; the... | |
 | sir John Frederick W. Herschel (1st bart.) - 1833 - 500 pages
...mile across ; Saturn a small orange, on a circle of four-fifths of a mile ; and Uranus a full sized cherry, or small plum, upon the circumference of a...question. To imitate the motions of the planets, in the above mentioned orbits, Mercury must describe its own diameter in 41 seconds; Venus, in 4nl 14s; the... | |
 | 1833 - 468 pages
...Uranus a full sized cherry, or small plum, upon the circumference of a circle more than a mile aud a half in diameter. As to getting correct notions...question. To imitate the motions of the planets, in the above mentioned orbits, Mercury must describe its own diameter in 41 seconds; Venus, iu 4ni 14s; the... | |
 | Augustus De Morgan - Astronomy - 1836 - 144 pages
...rather large pin's head, on a circle of 654 feet; Juno, Ceres, Vesta, and Pallas, grains of sand, in orbits of from 1000 to 1200 feet; Jupiter, a moderate-sized...question. To imitate the motions of the planets, in the above-mentioned orbits, Mercury must describe ils own diameter in 41 seconds; Venus in 4 minutes 14... | |
 | William Mullinger Higgins - Earth (Planet) - 1836 - 514 pages
...mile across ; Saturn a small orange, on a circle of four 6fths of a mile ; and Uranus a full sized cherry, or small plum, upon the circumference of a...question. To imitate the motions of the planets in the above-mentioned orbits, Mercury must describe his own diameter in forty-one seconds ; Venus in four... | |
 | Child rearing - 1836 - 422 pages
...mile across ; Saturn a small orange, on a circle of four fifths of a mile ; and Uranus a full sized cherry, or small plum, upon the circumference of a...question. To imitate the motions of the planets in the above-mentioned orbits, Merc*iry must describe his own diameter in forty-one seconds ; Venus in four... | |
 | John Wesley - Natural history - 1836 - 398 pages
...and a half in diameter. As to getting correct notions on this subject by drawing circles on paper, it is out of the question. To imitate the motions of the planets in the abovementioned orbits, Mercury must describe its own diameter in forty-one seconds; Venus in four minutes... | |
 | Science - 1836 - 534 pages
...Hina.ll plum, three quarters of a mile from the sun. "As to getting correct notions on this subject by those very childish toys, called orreries, it is out of the question." (Sir J. HerschePs Astronomy; Lardner's Cyclop&dia, p. 287.) This is the smallest scale on which an... | |
 | Great Britain. Council on Education - 1845 - 696 pages
...Cei'e«, Vesta, nnd Pallas, grains of sand, in orbits of from 1000 to 1200 feet; Jupiter, a moderate sized orange, in a circle nearly half a mile across; Saturn,...the question. To imitate the motions of the planets iu the above-mentioned orbits, Mercury must describe its own diameter in 41 seconds; Venus in 4 minutes... | |
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As to getting correct notions on this subject by drawing circles on paper, or, still worse, from those very childish toys called orreries, it is out of the question. 
