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Berkeley Models, Inc. was an American company that manufactured model-airplane kits that pioneered such firsts as the nation's first gas model plane kit, and which became one of the industry's leading companies. Founded in the Brooklyn borough of New York City, New York, and later based in West Hempstead, New York, it lasted from 1933 to 1962.
The prism cover test ( PCT) is an objective measurement and the gold standard in measuring strabismus, i.e. ocular misalignment, or a deviation of the eye. [1] It is used by ophthalmologists and orthoptists in order to measure the vertical and horizontal deviation and includes both manifest and latent components. [1]
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]
A magnetic anomaly detector ( MAD) is an instrument used to detect minute variations in the Earth's magnetic field. [ 1] The term refers specifically to magnetometers used by military forces to detect submarines (a mass of ferromagnetic material creates a detectable disturbance in the magnetic field ); military MAD equipment is a descendant of ...
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Counter-IED equipmentare created primarily for militaryand law enforcement. They are used for standoff detection of explosives and explosive precursor components and defeating the Improvised Explosive Devices(IEDs) devices themselves as part of a broader counter-terrorism, counter-insurgency, or law enforcement effort.
Researchers are engineering a parasite that spreads through cat feces to deliver therapeutic drugs to the brain. This is because the parasite is able to cross the blood-brain barrier, an important ...
Produced. 1987–2000. Number built. 21 [ 1][ 2] The Northrop B-2 Spirit, also known as the Stealth Bomber, is an American heavy strategic bomber, featuring low-observable stealth technology designed to penetrate dense anti-aircraft defenses. A subsonic flying wing with a crew of two, the plane was designed by Northrop (later Northrop Grumman ...
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