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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]
The FBI is investigating the sale to US buyers of what are suspected to be hundreds of treasures from the British Museum. The BBC understands the US law enforcement agency has also assisted with ...
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 ...
Elizabeth Anne Holmes (born February 3, 1984) is an American biotechnology entrepreneur who was convicted of fraud in connection to her blood-testing company, Theranos. The company's valuation soared after it claimed to have revolutionized blood testing by developing methods that needed only very small volumes of blood, such as from a fingerprick.
A Florida woman has sued the sheriff of a department that came under scrutiny this month after the fatal shooting of a Black airman, alleging that she was forced out of her home naked as deputies ...
After two days of deliberations, 12 New Yorkers found Donald Trump guilty of all charges in his hush-money case. It is a history-making verdict following a history-making trial. Trump is now the ...
The Maddox rod test can be used to subjectively detect and measure a latent, manifest, horizontal or vertical strabismus for near and distance. The test is based on the principle of diplopic projection. [1] Dissociation of the deviation is brought about by presenting a red line image to one eye and a white light to the other, while prisms are ...
Ophthalmology. In ophthalmology, horror fusionis is a condition in which the eyes have an unsteady deviation, with the extraocular muscles performing spasm-like movements that continuously shift the eyes away from the position in which they would be directed to the same point in space, giving rise to diplopia. Even when the double vision images ...
Kirlian photograph of two coins. Kirlian photography is a collection of photographic techniques used to capture the phenomenon of electrical coronal discharges.It is named after Soviet scientist Semyon Kirlian, who, in 1939, accidentally discovered that if an object on a photographic plate is connected to a high-voltage source, an image is produced on the photographic plate.
EMI 2001. EMI 2001s on their last day in BBC Elstree Centre Studio C in July 1991. The last programme in the world to use EMI 2001s to record images was EastEnders. The EMI 2001 broadcast studio camera was an early, very successful British made Plumbicon studio camera that included the lens within the body of the camera.