Word: lensed
(lookup in dictionary)
(lookup stats)
Dates: during 1940-1949
Sort By: most recent first
(reverse)
Orthodox explanation of eye function is that the shape of the eyeball is as unchanging as a glass eye; focusing is done by the elastic lens at the front of the eye; the six muscles around each eye have no function except to turn the eyeball. In myopia (nearsightedness) the...
Any photographic film that is printed as a positive, no matter how old, can be put into any projector that is fitted with a Birch-Field "iriscope," can then be projected on a screen to show the scene's original tints, somewhat faint but true. Though few except Birch...
Like the practice, the theory sounds almost too simple. When light is focused on a film by a lens, the various colors do not come to a focus at exactly the same distance from the lens. Violet and blue light are more sharply bent in their path than is red...
This pattern is not visible to the eye, nor when projected. But the light from a projector lamp is diverted by the aberration patterns into a conic shape that spreads out over the lens. Charles Birch-Field's iriscope adds the colors-reds in the outer regions of the...
>A lens grinding firm testified that training in grinding quartz crystals had been reduced from three weeks to three days.