Herschel, John F. W. (John Frederick William), Sir, 1792-1871 · London : Longman, Rees Orme · leaf 36
div] 1, and which arc spherical snrfaces concentric*it] K It, the earths surface. Let S represent a star, oroii a heai en!y body, beyond the utmost limit of the atmo-Kplierc ; then, if the air were away, the spectator wouldtet :• the direction of the straight line AS. Bnt, inrealitr, when the rav… … ntrrriiC tenuity of the uppermost strata; but as it*d*Aijcr> downwards, the strata continually increasingil denary, i: will cor.unuahy undergo greater and greaterrrrc^K-u m the fame directiuii ; and thus, instead of: arming the straight line S JA.it will describe a curved c d. continually more…
Astronomy
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