OPTICAL INSTRUMENT • FREE-TRANSLATOR.COM • Definition of Optical instrument

"Optical instrument" Quotes from Famous Books

... midst of this titanic battle a huge disc appeared, carried by the gaseous clouds. It was a concave lens, like some powerful optical instrument. But instead of focusing beams of light, it reflected, not only light but all forms of energy. As the spheres attacked they were shattered into spores ...

— The Whispering Spheres • Russell Robert Winterbotham

... 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

... 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

... stepped forward and applied his eye to the lens. I suspect it to have been shut most of the time, for I observe a good many elderly people adjust the organ of vision to any optical instrument in that way. I suppose it is from the instinct of protection to the eye, the same instinct as that which makes the raw militia-man close it when he pulls the trigger of his musket the first time. He expressed himself highly gratified, however, with what he saw, and retired ...

— The Poet at the Breakfast Table • Oliver Wendell Holmes, Sr.

... optical instrument, contrived to give to the eye a large appearance of many objects which ...

— The Illustrated London Reading Book • Various