 | Walter Henry Burton - 1828 - 84 oldal
...no small mystery is involved. For if you take the number sixty, (which I stated to represent nearly the mean distance of the moon from the centre of the earth, estimated in semidiameters of the earth,) and multiply it twice by itself, the product is 216,000;... | |
 | T. Baker - 1851 - 172 oldal
...propositions and their corrolaries. 284. PEOB. 1. — Taking the radius of the earth to be 4000 miles, the mean distance of the moon from the centre of the earth to be 60 of the earth's radii, to determine the attractive force exerted on the moon, which causes... | |
 | Thomas Baker - 1851 - 188 oldal
...propositions and their corrolaries. 284. PROB. 1.— Taking the radius of the earth to be 4000 miles, the mean distance of the moon from the centre of the earth tp be 60 of the earth's radii, to determine the attractive force exerted on the moon, which causes... | |
 | Thomas Baker (C.E.) - 1851 - 176 oldal
...propositions and their corrolaries. " 284. PROB. 1.— Taking the radius of the earth to be 4000 miles, the mean distance of the moon from the centre of the earth to be 60 of the earth's radii, to determine the attractive force exerted on the moon, which causes... | |
 | Alfred Wilks Drayson - 1862 - 342 oldal
...often as it does every year, to perform, its annual course : the radius of the small circle is nearly the mean distance of the moon from the centre of the earth. Thus if we considered the earth the nave, and the moon's orbit the tire of a wheel, then this wheel... | |
 | William Henry Bayley (arithmetician.) - 1864 - 202 oldal
...Conversion of Arc into Time. (See page 41). Conversion of Longitude into R.Â. (See page 48). The Moon. The Mean, distance of the Moon from the centre of the Earth is 237630 miles, or nearly 60 radii of the Earth, so that it is sensibly nearer when on the Zenith. (In... | |
 | William Guy Peck - 1883 - 406 oldal
...augmentation of the moon's semi-diameter, obviously increases as she approaches the zenith of the observer. The mean distance of the moon from the centre of the earth is a little more than 60 times the terrestrial radius; hence,-her mean distance from that point of the... | |
 | De Volson Wood - 1903 - 404 oldal
...moon in its orbit. The mean time of the periodic motion of the moon is T = 2,360,585 seconds ; and the mean distance of the moon from the centre of the earth is 60.361 Jt, in which R is the mean radius of the earth. Calling H — 20,897,500 feet and substituting... | |
 | Sir William Cecil Dampier Dampier, Margaret Dampier Dampier - 1924 - 312 oldal
...distances drawn from the periodic times fall in between them. That the circum-terrestrial force likewise decreases in the duplicate proportion of the distances,...Bullialdus, Hevelius and Ricciolus, 59; according to Flamsted, 59^; according to Tycho, 56^; to Vendelin, 60; to Copernicus, 60^; to Kircher, 62%. But Tycho,... | |
 | Sir William Cecil Dampier Dampier, Margaret Dampier - 2003 - 312 oldal
...distances drawn from the periodic times fall in between them. That the circum-terrestrial force likewise decreases in the duplicate proportion of the distances,...earth, is, in semi-diameters of the earth, according to Ptolomy, Kepler in his Ephemerides, Bullialdus-, Hevelius and Ricciolus, 59; according to Flamsted,... | |
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... 72333, 38710. Their distances, according to Kepler and Bullialdus, scarcely differ by any sensible quantity, and where they differ most the distances drawn from the periodic times fall in between them. That the circum-terrestrial force likewise decreases... 