A text-book of general astronomy : for colleges and scientific schools (1888)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston ; London : Ginn & Company · leaf 231
properly constructed machineiy,as, for instance, the solar engines of Ericsson and Mouchot (seeLangleys New Astronomy). In Ericssons apparatus the re-flector, about 11 feet by 16 feet, collected heat enough to work athree-horse-power engine very well. Taking the earths surface as awhole, the energy… … SOLAR RADIATION AT THE SUNS SURFACE. 219 perfect heat engine, would be able to hoist sixty tons to the heightof a mile. 346. Solar Radiation at the Suns Surface. — If, now, we estimatethe amount of radiation at the suns surface itself, we come toresults which are simply amazing and beyond…
Astronomy
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