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Prism spectacles with a single prism perform a relative displacement of the two eyes, thereby correcting eso-, exo, hyper- or hypotropia. In contrast, spectacles with prisms of equal power for both eyes, called yoked prisms (also: conjugate prisms, ambient lenses or performance glasses) shift the visual field of both eyes to the same extent. [5]
In fluid dynamics, the Cunningham correction factor, or Cunningham slip correction factor (denoted C), is used to account for non-continuum effects when calculating the drag on small particles. The derivation of Stokes' law , which is used to calculate the drag force on small particles, assumes a no-slip condition which is no longer correct at ...
PRISM is a code name for a program under which the United States National Security Agency (NSA) collects internet communications from various U.S. internet companies. [1] [2] [3] The program is also known by the SIGAD US-984XN.
The term gel permeation chromatography can be traced back to J.C. Moore of the Dow Chemical Company who investigated the technique in 1964. [3] The proprietary column technology was licensed to Waters Corporation, who subsequently commercialized this technology in 1964. [4]
The error-correction demonstration was performed on Schrodinger-cat states encoded in a superconducting resonator, and employed a quantum controller capable of performing real-time feedback operations including read-out of the quantum information, its analysis, and the correction of its detected errors. The work demonstrated how the quantum ...
Bette Nesmith Graham (1924–1980), U.S. – Correction fluid, Liquid Paper; Iréne Grahn (1945–2013), Sweden – finger joint support for patients with rheumatoid arthritis; Hans Christian Gram (1853–1938), Denmark / Germany – Gram staining (histology) Zénobe Gramme (1826–1901), Belgium/France – Gramme dynamo
It requires a velocity of 183 ± 3 m/s (600 ± 10 ft/s), and a BB penetration between 8.3 and 9.5 cm (3.3–3.7 in). [ 6 ] In his book Bullet Penetration , ballistics expert Duncan MacPherson describes a method that can be used to compensate for ballistic gelatin that gives a BB penetration that is off by several centimeters (up to two inches ...
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