Licence: Public Domain Mark
Credit: A short history of astronomy / by Arthur Berry. Source: Wellcome Collection.
Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.
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![[Roman figures refer to the chapters, Arabic to the articles.] Theory of the Universe (of Wright), xn. 258 Thetis, viii. 160 Three bodies, problem of, xi. 228, 230-233, 235 Tidal friction, xin. 287, 292, 293, 320 Tides, vi. 130; vn. 150; ix. 189; xi. 228-230, 235, 248; xin. 287, 292, 293, 297, 320 Time, measurement of, 1. 4, 5> 16. See also Calendar, Day, Hour, Month, Week, Year Titan, viii. 154 Titania, xn. 255 Tolctan Tables, in. 61, 66 Torrid zones, 11. 35 Total eclipse, 11. 43; vn. 145; x. 205; xin. 301. See also Eclipses Transit instrument, x. 218, 225 n Transit of Mercury, x. 199 Transit of Venus, vm. 156; x. 202, 205, 224, 227; xm. 281, 282, 284 Translations, ill. 56, 58, 60, 62, 66, 68 Transversals, v. 110 n Trepidation, in. 58, 62, 68; iv. 84; v. 112 Trigonometry, 11. 37 n, 47 u; in. 59 n, 64 n, 68 n; iv. 74 Trivium, m. 65 Tropical year, 11. 42 Tuttle's comet, xm. 291 Twilight, in. 69 Twinkling of stars, 11. 30 Two New Sciences (of Galilei), vi. 133, 134 n ; vm. 152 Tychonic system, v. 105; VI. 127 Umbra (of sun-spots), vi. 124; xii. 268 Uniform acceleration, vi. 133. See also Acceleration Uraniborg, v. 101 Uranometria Nova Oxoniensis, xm. 316 Uranus, xii. 253, 254, 255, 267 ; xm. 276, 288, 289, 297 Uranus, rotation of, xin. 297 Uranus, satellites of, xi. 250 n; xii. 255, 267 ; xm. 272, 295 Variable stars. See Stars, vari- able Variation (of the moon), in. 60 ; v.Ill; vn.145 Variation of elements or para- meters, xi. 233 n, 236, 245 Variations, calculus of, xi. 237 u Vega, in. 64 Venus, 1. 14-16; 11. 25, 26, 45, 47, 51; in. 68; iv. 75, 81, 86, 87; v. 98, 100, 103; vi. 121, 123; vn. 136 «, 139, 142, 144; vm. 154; ix. 181, 185; x. 223, 227; xi. 235, 245; xii. 267, 271; xm. 282, 297. See also the following headings Venus, mass of, xi. 235, 248 Venus, phases of, vi. 123, 129 Venus, rotation of, vm. 160; xn. 267 ; xm. 297 Venus, transits of. See Transits of Venus Vernal equinox, 1. II. See also Equinoxes Vernier, in. 69 // Vertical, n. 33; x. 221; xm. 285 Vesta, xm. 294 Victoria, xm. 281 Virtual velocities, xi. 237 a Vortices, vm. 163; ix. 178, 195 Wave, wave-length (of light), xm. 299, 300, 302 Weather, prediction of, 11. 20; vn.136 Week, 1. 16 Weight, vi. 116, 130; ix. 180 Weights and Measures, Com- mission on, xi. 237, 238](https://iiif.wellcomecollection.org/image/b21033870_0531.jp2/full/800%2C/0/default.jpg)