Elements of natural philosophy (Volume 2-3) (1850)
Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 279
unhofer suc-ceeded in forming a ruled surface of glass in which thestriae were actually invisible under the most powerfulmicroscope, the interval of the furrows being only golooof an inch. In some furrowed surfaces produced by Mr.Barton, the lines are so close that 10000 of them wouldoccupy only… … ELEMENTS OF OPTICS. 271 from metallic surfaces which have been polished by acoarse powder, and from surfaces of glass over whichthe finger is passed after being moistened by the breath. The beautiful colors of mother of pearl are natural Effects of the • , t? , i i mi • l l • striae on mother…
Mechanics · Acoustics · Optics
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