Stars and telescopes; a hand-book of popular astronomy, founded on the 9th ed. of Lynn's Celestial motions (1899)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911. Celestial motions · Boston, Little, Brown and company · leaf 118
ion of 250 feetin the Suns diameter will accourt for its entire radiation in ayear, — a rate of shrinkage so slow that many centuries mustelapse before it will become detectable with our best instruments. Accepting this theory. Lord Kelvin estimates that theEarth cannot have been receiving the Suns… … von Helmholtz (1821-1894) 78 Stars and Telescopes it can continue to radiate sufficient heat to maintain life of tvpesnow present on the Earth longer than 10,000,000 years in thefuture. Assuming that solar heat is radiated uniformly in alldirections, a simple computation shows that all the…
Astronomy
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