Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
FiG. 29. … OPTICS. 223 sphere next the earth becomes a reflector, causing total reflection (309)of the oblique rays foiling upon it; Avhich Avill cause objects to appearinverted, as if reflected from water. In this way portions of the earth,especially on deserts, aj^ixnir to the traveller as lakes and ponds.…
Physics · Astronomy
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