Inside Out Library · Explore

Scientific American, Vol. 72, No. 11 (March 1895) (1895)

leaf 10

An illustration from Scientific American, Vol. 72, No. 11 (March 1895), 1895, leaf 10
indicated on the inside scale (red) may be "near sighted" in one diameter and "far of the disk, B, which is revolved in the opposite direc- sighted " in another. As to muscle troubles, few people tion from what it is in testing for hypermetropia. know that prisms are prescribed mounted in spectacle… … ^rf^-v Augustus St. Gaudens. After its rejection, a new de- the rays in a Galilean telescope or opera glass, and Fig. 4 shows the sign was prepared by Charles E. Barber, of the United DB. HUNTINGTON'S AUTO-PHORO-OPTOMETER States Mint, so that the medal as issued will be the effect on the light beam…

Patents · Naphtha · Munn · Patented · Scientific American · Suspension bridge · Sir henry · American patent · Compressed air · Perspective elevations · Bell telephone · Gas engine · Storage battery · Plate glass

Internet Archive · Public domain (published before 1931). Free to use for anything.

More pictures from Scientific American, Vol. 72, No. 11 (March 1895)

More like this