A system of natural philosophy, designed for the use of schools and academies (1845)
Moffat, J[ohn] M. [from old catalog] · Philadelphia, E. C. Biddle · leaf 357
e frequent appearance of parhelia, see Parrysaccount of his stay at Melville Island.—Ed.2 g 2 354 optics. ligure in an erect position, above the preceding. If there is asingle figure only, it will usually be inverted with respect to thereal ship below it. Sometimes a double image, or an erect… … 68. The manner in which these and similar phenomena maybe caused by reflection may be comprehended by reference to theanalogous effect of spherical mirrors, subsequently noticed. Butit is probable that, where double images of objects appear, theeffect depends chiefly on the refraction of light,…
Physics
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