far-field beam width
21Optical fiber — A bundle of optical fibers A TOSLINK fiber optic audio c …
223D scanner — A 3D scanner is a device that analyzes a real world object or environment to collect data on its shape and possibly its appearance (i.e. color). The collected data can then be used to construct digital, three dimensional models useful for a wide… …
23Double-slit experiment — Slit experiment redirects here. For other uses, see Diffraction. Quantum mechanics …
24USS Constitution — For similarly named ships, principles of government, and other uses, see Constitution (disambiguation). Constitution on her 213th birt …
25Metamaterial antenna — This Z antenna tested at the National Institute of Standards and Technology is smaller than a standard antenna with comparable properties. Its high efficiency is derived from the Z element inside the square that acts as a metamaterial, greatly… …
26New Horizons — For other uses, see New Horizons (disambiguation). New Horizons Operator NASA Major contractors Applied Physics Laboratory (APL) Southwest Research Institute (SwRI) …
27List of weapons in Star Trek — Contents 1 Energy weapons 2 Projectile weapons 3 Biological, radioactive, and chemical weapons …
28Ultrashort pulse — In optics, an ultrashort pulse of light is an electromagnetic pulse whose time duration is on the order of the femtosecond (10 − 15 second). Such pulses have a broadband optical spectrum, and can be created by mode locked oscillators. They are… …
29Conical scanning — is a system used in early radar units to improve their accuracy, as well as making it easier to steer the antenna properly to point at a target. Conical scanning is similar in concept to the earlier lobe switching concept used on some of the… …
30Fraunhofer diffraction — In optics, Fraunhofer diffraction is a form of wave diffraction, which occurs when field waves are passed through an aperture or slit, causing only the size of an observed aperture image to change Hecht, E. (1987) , p396 Definition of Fraunhofer… …
