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Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]
Correction tape. Correction tape is an alternative to correction fluid used to correct mistakes during typing, or, in some forms, handwriting. One side of the tape, which is placed against the area to cover, is coated in a white, opaque masking material. Pressure applied to the other side of the tape transfers this material to the paper.
Esotropia is a form of strabismus in which one or both eyes turn inward. The condition can be constantly present, or occur intermittently, and can give the affected individual a "cross-eyed" appearance. [1] It is the opposite of exotropia and usually involves more severe axis deviation than esophoria. Esotropia is sometimes erroneously called ...
Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.
Fear Street Netflix The wait is almost over for Netflix’s latest installment in the Fear Street franchise with the release of Fear Street: Prom Queen. Based on R. L. Stine‘s book series of the ...
Dyson Airstrait Hair Straightener. $400 $500 Save $100. Dyson hair tools rarely go on sale, so if you've been eyeing the Airstrait, today's your lucky day — you can bring it home for $100 off ...
Play resumed at Valhalla after about a 90 minute delay on Friday morning.
The Stone Tape Theory is the speculation that ghosts and hauntings are analogous to tape recordings: that mental impressions during emotional or traumatic events can be projected in the form of energy, "recorded" onto rocks (and other items) and "replayed" under certain conditions. The idea draws inspiration from and shares similarities with ...
The National Library Service for the Blind and Print Disabled [1] ( NLS) is a free library program of braille and audio materials such as books and magazines circulated to eligible borrowers in the United States and American citizens living abroad by postage-free mail and online download. The program is sponsored by the Library of Congress.
Edward L. Scanlon was the ultimate insider. The long-serving NBC executive was a hugely influential player in the life of the network during the decades when it was owned by RCA and later General ...