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The prismatic lenses of the belay glasses are arranged so as to bend light from above through total internal reflection into the observer's eye, allowing the belayer to observe the climber while maintaining a comfortable head/neck position. The design based on the eyeglasses frame provides for a split field of vision:
Those things seen by a higher ray, appear higher. Right and left rays appear right and left. Things seen within several angles appear clearer. Euclid did not define the physical nature of these visual rays but, using the principles of geometry, he discussed the effects of perspective and the rounding of things seen at a distance.
In contrast to most other eye glasses, shooting glasses usually only have one lens that corrects the ametropia of the dominant eye, which is used for aiming.This lens is selected in such a way that the maximum visual acuity lies on the font sight line element near the muzzle of the (non-magnifying) open type or diopter and globe type match sight line elements to get three points positioned in ...
A woman wearing lensless glasses. Lensless glasses are glasses that lack lenses. They are worn solely for aesthetic or fashion purposes, having no function in vision correction or eye protection. The frames are usually oversized, and commonly all black in color. They may be worn in conjunction with contact lenses.
"The Glasses" is the third episode of the fifth season of the American sitcom Seinfeld. The 67th episode of the series overall, it was written by the writing team Tom Gammill and Max Pross, their debut for the series, and directed by Tom Cherones.
The working title for the show was Night Terrors. [1] It was created by Dan Angel and Billy Brown, who had both previously worked on John Carpenter's 1993 horror anthology Body Bags, as well as the Goosebumps series that aired on Fox Kids between 1995 and 1998.
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