Henderson, C. Hanford (Charles Hanford), 1861-1941, Woodhull, John F. (John Francis), 1857-1941 · New York, D. Appleton and company · leaf 338
e readily visible if covered with dust or moisture orare scratched, or if in any way the surface is made rough,A bright tin reflector may be scoured with sand or scratchedwith a file so that it will no longer reflect an image. A MISCELLANEOUS OBSERVATIONS ON REFLECTION 315 glass mirror might be…
Physics
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