With these facts, here far too briefly and imperfectly given, which show that there is much graduated diversity in the eyes of living crustaceans, and bearing in mind how small the number of living animals is in proportion to those which have become extinct, I can see no very great difficulty (not more than in the case of many other structures) in believing that natural selection has converted the simple apparatus of an optic nerve merely coated with pigment and invested by transparent membrane, into an
optical instrument as perfect as is possessed by any member of the great Articulate class.
Costello inspected the young couple again with her
optical instrument. "He is very handsome.
You know that
optical instruments have acquired great perfection; with certain instruments we have succeeded in obtaining enlargements of 6,000 times and reducing the moon to within forty miles' distance.
(We observe the same thing in children to-day, whose usage in this particular is a striking and beautiful instance of the law that the infancy of individuals reproduces the methods and stages of development characterizing the infancy of races.) In the work of these primitive scribes all the punctuation is found, by the modern investigator with his
optical instruments and chemical tests, to have been inserted by the writers' ingenious and serviceable collaborator, the common house-fly -- Musca maledicta .
Summary: TEHRAN (FNA)- A team of physicists and bioengineers announced that they have developed an
optical instrument allowing them to control the behavior of a worm just by shining a tightly focused beam of light at individual neurons inside the organism.
has developed exceptionally precise
optical instrument windows as small as 0.20 millimeters in diameter.
What
optical instrument is used by surveyors to measure vertical and horizontal angles?
The stereoscope, an
optical instrument which views two images of the same object from different angles to produce a 3D-type illusion, has a cherrywood case.
ASCS is a precision
optical instrument that scans and measures openings and wire diameters, supporting sieves up to 18 inches in diameter, with openings from 20 microns to 12.5 mm.
9 : the number of times an
optical instrument (as a microscope) magnifies the object viewed
A right click of the mouse alters light intensity to meet
optical instrument and individual requirements.
There was a kind of dialectic between the museum as an instrument and an actual
optical instrument, which disappears when you look through it.
optical instrument - an instrument designed to aid vision