 Uranus a full-sized cherry, or small plum, upon the circumference of a circle more than a mile and a half in diameter. As to getting correct notions on this subject by drawing circles on paper, or, still worse, from those very childish toys called orreries,...  The Mechanics' Magazine, Museum, Register, Journal, and Gazette - Page 3971849Full view - About this book
 | 1833 - 618 pages
...diameter. As to getting correct notions on this subject by drawing circles on paper, or, still worse, from those very childish toys called orreries, it...orbits, Mercury must describe its own diameter in 41 seconds ; Venus, in 4 minutes 14 seconds ; the earth, in 7 minutes ; Mars, in 4 minutes, 48 seconds... | |
 | John Frederick William Herschel - Astronomy - 1833 - 444 pages
...diameter. As to getting correct notions on this subject by drawing circles on paper, or, still worse, from those very childish toys called orreries, it...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
...diameter. As to getting correct notions on this subject by drawing circles on paper, or, still worse, from those very childish toys called orreries, it...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
...diameter. As to getting correct notions on this subject by drawing circles on paper, or, still worse, from those very childish toys called orreries, it...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... | |
 | William Mullinger Higgins - Earth (Planet) - 1836 - 514 pages
...diameter. As to getting correct notions on this subject by drawing circles on paper, or, still worse, from those very childish toys called orreries, it...the above-mentioned orbits, Mercury must describe his own diameter in forty-one seconds ; Venus in four minutes and fourteen seconds ; the Earth in seven... | |
 | Augustus De Morgan - Astronomy - 1836 - 140 pages
...diameter. As to getting correct notions on this subject by drawing circles on paper, or still worse, from those very childish toys called orreries, it...the above-mentioned orbits, Mercury must describe iti own diameter in 41 seconds; Venus in 4 minutes 14 seconds ; the Earth in 7 minutes ; Mars in 4... | |
 | Child rearing - 1836 - 422 pages
...diameter. As to getting correct notions on this subject by drawing circles on paper, or, still worse, from those very childish toys called orreries, it...motions of the planets in the above-mentioned orbits, Merc*iry must describe his own diameter in forty-one seconds ; Venus in four minutes and fourteen seconds... | |
 | 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...orbits, Mercury must describe its own diameter in forty-one seconds; Venus in four minutes fourteen seconds ; the Earth in seven minutes ; Mars in four... | |
 | 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... | |
 | Mrs. L. H. Tyler - Astronomy - 1837 - 302 pages
...diameter. 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." (270.) The analogical evidence of the earth's annual motion arising from the revolution of these bodies... | |
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