OPTICAL INSTRUMENT • E-FREE TRANSLATION.COM • Definition of Optical instrument

"Optical instrument" Quotes from Famous Books

... October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument. This telescope was to be powerful enough to render visible on the surface of the moon an object being at ...

— The Moon-Voyage • Jules Verne

... the evolution of annulose segments and vertebrate skeletons has gone by,—on our planet, at least. In the line of our own development, all work of this kind stopped long ago, to be replaced by different methods. As an optical instrument, the eye had well-nigh reached extreme perfection in many a bird and mammal ages before man's beginnings; and the essential features of the human hand existed already in the hands of Miocene apes. But different methods came in when human intelligence ...

— The Destiny of Man - Viewed in the Light of His Origin • John Fiske

... jewels are also best made of glass, as garnet or any red stone will look almost black in such large pieces. Red carnelian has a sort of brick-red color, which has a cheap appearance. There is a new phosphorus glass used by optical instrument makers which is intensely hard, and if colored ruby-red makes a beautiful pallet jewel, which will afford as much service as if real stones were used; they are no cheaper than carnelian pallets, but much richer looking. ...

— Watch and Clock Escapements • Anonymous

Words linked to "Optical instrument" : oesophagoscope, binoculars, opera glasses, sights, periscope, lense, glasses, jeweler's glass, eyeglasses, spectacles, prism spectroscope, lens system, specs, lens, spectroscope, projector, field glasses, instrument, esophagoscope