Note 295 — Chapter VI

The theory that the sun is an incandescent globe is—as one of the magazines recently expressed it—“going out of fashion.” It has been computed that if the sun—whose mass and diameter is known to us—“were a solid block of coal, and sufficient amount of oxygen could be supplied to burn at the rate necessary to produce the effects we see, it would be completely consumed in less than 5,000 years.” And yet, till comparatively a few weeks ago, it was maintained—nay, is still maintained, that the sun is a reservoir of vaporized metals!