| 单词 | converging lens |
| 例句 | A ray entering a converging lens through its focal point exits parallel to its axis. College Physics for AP Courses 2015-08-12T00:00:00Z Intercepting the luminous portion of his spectrum he brought, by a converging lens, the ultra-red rays to a focus, but by this condensation he obtained no light. Fragments of science, V. 1-2 He has permitted a pencil of sun rays to pass through a converging lens upon a cell containing a fragment of an aquatic plant. Scientific American Supplement, No. 430, March 29, 1884 That is, f is positive and do > f , so that we may expect an image similar to the case 1 real image formed by a converging lens. College Physics for AP Courses 2015-08-12T00:00:00Z For example, a powerful converging lens will focus parallel light rays closer to itself and will have a smaller focal length than a weak lens. College Physics for AP Courses 2015-08-12T00:00:00Z Consider an object some distance away from a converging lens, as shown in Figure 25.32. College Physics for AP Courses 2015-08-12T00:00:00Z To use a convex lens as a magnifier, the object must be closer to the converging lens than its focal length. College Physics for AP Courses 2015-08-12T00:00:00Z Figure 25.36 uses ray tracing to show how an image is formed when an object is held closer to a converging lens than its focal length. College Physics for AP Courses 2015-08-12T00:00:00Z For a converging lens, the focal point is the point at which converging light rays cross; for a diverging lens, the focal point is the point from which diverging light rays appear to originate. College Physics for AP Courses 2015-08-12T00:00:00Z Figure 26.7 Correction of farsightedness uses a converging lens that compensates for the under convergence by the eye. College Physics for AP Courses 2015-08-12T00:00:00Z Figure 25.36 Ray tracing predicts the image location and size for an object held closer to a converging lens than its focal length. College Physics for AP Courses 2015-08-12T00:00:00Z The loss of the ability to accommodate with age is called presbyopia, which is corrected by the use of a converging lens to add power for close vision. College Physics for AP Courses 2015-08-12T00:00:00Z Farsightedness, or hyperopia, is the inability to see close objects and is corrected with a converging lens to increase power. College Physics for AP Courses 2015-08-12T00:00:00Z A student wishes to predict the magnification of an image given the distance from the object to a converging lens with an unknown index of refraction. College Physics for AP Courses 2015-08-12T00:00:00Z The converging lens produces an image farther from the eye than the object, so that the farsighted person can see it clearly. College Physics for AP Courses 2015-08-12T00:00:00Z |
| 随便看 |
|
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。