Information om | Engelska ordet COLLIMATION

Exempel på hur man kan använda COLLIMATION i en mening

• Shearing interferometer, in optics, a simple and very common means to check the collimation of beams by observing interference.
• Other designs such as refractors and catadioptrics (specifically Maksutov cassegrains) have fixed collimation.
• He took special precautions to account for the expansion of the chain under the Indian weather; and repeated measurements with rotations of the telescope of the Zenith sector so as to account for collimation errors in determining the latitude (the elevation of the pole star directly provides the latitude but owing to errors related to determining the horizon and from refraction, the preferred method in surveying was to use well known stars located closer to the zenith, such as Aldebaran for India, whose declination from the pole-star had been pre-established).
• In the case of a noncollimated beam incident on a wedged shear plate, the path difference between the two reflected wavefronts is increased or decreased from the case of perfect collimation depending on the sign of the curvature.
• The hyperbolic secondary has an advanced, computer-controlled collimation (alignment) system in order to permit very precise positions of stars and satellites (milliarcsecond astrometry) across its wide field of view.
• In applications such as photogrammetry, the fiducial marks of a surveying camera may be set so that they define the principal point, in a process called "collimation".
• Owing to the small illuminated sample volume and the wastefulness of the collimation process—only those photons are allowed to pass that happen to fly in the right direction—the scattered intensity is small and therefore the measurement time is in the order of hours or days in case of very weak scatterers.
• The dam is monitored with a complete installation for the observation and recording of its deformations, temperature and tensional state, counting with pendulums, electroacoustic extensometers, air and water thermometers, tensiometric capsules, flexometers, cliometrics bases and a system of measurements of displacements by collimation in the coronation of the dam attend the demands of irrigation of about 10,000 hectares.
• Compared to multidetector computed tomography (MDCT), the wider collimation in CBCT leads to increased scatter radiation and degradation of image quality as demonstrated by artifacts and decreased contrast-to-noise ratio.

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