| 词汇 | spherical-aberration |
| 释义 | BETA spherical aberrationcollocation in Englishmeanings of sphericaland aberrationThese words are often used together. Click on the links below to explore the meanings. spherical adjective uk /ˈsfer.ɪ.kəl/ us /ˈsfɪr.ɪ.kəl/ round, like ... See more at spherical aberration noun[ C or U ] uk /ˌæb.əˈreɪ.ʃən/ us /ˌæb.əˈreɪ.ʃən/ a temporary change from the typical or usual way ... See more at aberration Examples of spherical aberrationspherical aberration The compressed input beam is then directed to a spherical tertiary mirror, which results in traditional sphericalaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. He argued that a mirror shaped like the part of a conic section, would correct the spherical aberration that flawed the accuracy of refracting telescopes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For simple designs one can sometimes calculate parameters that minimize sphericalaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The best-known aberrations include sphericalaberration and coma. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. By optimizing the extraction diode geometry and reducing the beam current, the sphericalaberration was later improved and therefore the beam profile became more uniform. Sphericalaberration occurs near the edge of the emitter and is more pronounced when the source radius is large. With on-axis viewing, as pupillary diameter increases beyond the optimal range, the retinal point spread function becomes wider as a result mainly of sphericalaberration. His research in catoptrics (the study of optical systems using mirrors) centred on spherical and parabolic mirrors and sphericalaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The potential advantages of using parabolic mirrorsreduction of sphericalaberration and no chromatic aberrationled to many proposed designs and several attempts to build reflecting telescopes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. By breaking the rotational symmetry a bit and varying the electrostatic potential along the mean path of the sphericalaberration is minimized. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The photographer may introduce three levels of sphericalaberration via a push-pull ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, the focus of a spherical reflector will not be a point focus because it suffers from a phenomenon known as sphericalaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In brighter conditions, the pupil constricts, blocking the more peripheral rays and minimizing the effect of sphericalaberration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The geometric collecting area of each telescope is about 25 cm2, with sphericalaberration limiting resolution to about 0.25s. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They are commonly used for laser applications, however, where the beams are both monochromatic (minimizing chromatic aberration) and narrow (minimizing sphericalaberration). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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