a microscope that utilizes the phase differences of light rays transmitted by different portions of an object to create an image in which the details of the object are distinct despite their near-uniformity of refractive index.
a microscope that makes visible details of colourless transparent objects. It employs a method of illumination such that small differences of refractive index of the materials in the object cause differences of luminous intensity by interference
[feyz] /feɪz/ noun 1. any of the major appearances or aspects in which a thing of varying modes or conditions manifests itself to the eye or mind. 2. a stage in a process of change or development: Each phase of life brings its own joys. 3. a side, aspect, or point of view: This is […]
noun, Chemistry. 1. a graph, usually using temperature, pressure, and composition as coordinates, indicating the regions of stability of the various phases of a system.
noun 1. a radar antenna consisting of an array of dipoles that are excited in or out of phase with each other to control beam direction and radiation pattern without moving the antenna. Compare (def 3). noun 1. an array of radio antennae connected together to form a single antenna. The beam produced can be […]
[feyz-doun] /ˈfeɪzˌdaʊn/ noun 1. an act or instance of phasing down; gradual reduction.