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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]
Corrective lens. A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye.
Agrajag. Agrajag is a tragic and piteous creature who is continually reincarnated and subsequently killed, each time unknowingly, by Arthur Dent.Agrajag is first identified in the novel Life, the Universe and Everything, but it is revealed that several of Arthur's encounters in the first and second novels (and in previous chapters of the third) were with previous incarnations of Agrajag.
June 30, 2024 at 9:03 AM. Jurors weighing the murder case against Karen Read, the Massachusetts woman accused of running down and killing her police officer boyfriend in 2022, ended the week ...
The Big Short (2015) A dramedy directed by Adam McKay, The Big Short is a deep dive into the 2008 housing market meltdown. The ensemble cast includes Steve Carell, Christian Bale, Ryan Gosling ...
Progressive lenses are corrective lenses used in eyeglasses to correct presbyopia and other disorders of accommodation. They are characterised by a gradient of increasing lens power, added to the wearer's correction for the other refractive errors. The gradient starts at the wearer's distance prescription at the top of the lens and reaches a ...
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