tioned to the bril- office of war correspondent to the extensive, deadly, and every-day life. liancy of illumination produced in the field of view, it fol- desperative battles of ants which so frequently occur in This same character of visual mutilation results from the lows from this one superior… … ble to correct such a lens to the same degree of excellency pying this focus will appear magnified in proportion to the Fig. 3-SECTION OF REGULATOR. as that of one of like focal length and less diameter, a like power used. The same result can be obtained by using or- dinary magnifying lenses in…
Patents · Patented · Boiler · Oysters · Piston · Binocular · Scientific American · Feet · Sewing machine · Needle points · Comet seeker · Norwalk iron · Binocular vision · Iron works · Focal length · Steam engine · Magnifying power
Internet Archive · Public domain (published before 1931). Free to use for anything.
