Kelvin, William Thomson, Baron, 1824-1907, Darwin, George Howard, Sir, 1845-1912, Tait, Peter Guthrie, 1831-1901 · Cambridge [Eng.] : University Press · leaf 104
ion will be insensible ; but there willbe slow precession. To this case also belongs the precessional motion of the earths Model illustrating Precessional Equinoxes. axis; for which theangle a = 23° 27 28,the period of the ro-tation » the siderealday; that of 12 is25,868 years. If thesecond diagram… … 6 82 PRELIMINARY. [107. Precession ner edge of a fixed ring in space (directionally fixed, that is of tho equi- °, . ,° r , . , J . uoxes. to say, but having the same translationai motion as theearths centre), and imagine a circular post or pivot ofradius BI to be fixed to the earth with its centre…
Calculators · Mechanics, Analytic · Tides
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