Popular astronomy : a concise elementary treatise on the sun, planets, satellites and comets (1865)
Mitchel, O. M. (Ormsby MacKnight), 1809-1862 · New York : Oakley & Mason · leaf 41
THE suns limb » tg -^■l.^ _ tJ U I ^ M ^W 1^ *^ ! ?l. L,„HI … •S^^^^^-^ ^ SOLAR SPOTS T H E S U N. 37 The suns real magnitude.—Modern instrumentsenable us to measure with great exactitude the anglesubtended by the suns apparent diameter, an angle whosovalue at the suns mean distance amounts to 32 .V.But a globe rerdoved to a distance of ninety-five mil-lions…
Astronomy
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