background illumination
1illumination — 1. Throwing light on the body or a part or into a cavity for diagnostic purposes. 2. Lighting an object under a microscope. [L. il lumino, pp. atus, to light up] axial i. the transmission or reflection o …
2Philosophy and its background in the early medieval West — Rosamond McKitterick and John Marenbon ‘Libraries, schools and the dissemination of texts’ is by Rosamond McKitterick; the ‘Introduction’ and ‘Philosophical themes’ are by John Marenbon. INTRODUCTION The period from 800 to 1100 is even more… …
3International Commission on Illumination — The CIE 1931 color space chromaticity diagram with wavelengths in nanometres. The colors depicted depend on the color space of the device on which the image is viewed. The International Commission on Illumination (usually abbreviated CIE for its… …
4dark-field illumination — [därk′fēld′] n. the illumination of the field of a microscope by directing a beam of light from the side so that the specimen is seen against a dark background * * * …
5dark-field illumination — [därk′fēld′] n. the illumination of the field of a microscope by directing a beam of light from the side so that the specimen is seen against a dark background …
6bright-field illumination — noun A method of illumination in microscopy in which the specimen appears dark on a bright background • • • Main Entry: ↑bright …
7dark-ground illumination — noun (biology) A method for the microscopic examination of living material by scattered light, specimens appearing luminous against a dark background (cf ↑bright field illumination) • • • Main Entry: ↑dark …
8dark-field illumination — «DAHRK FEELD», a system of illumination, used especially in an ultramicroscope, lighting the field from the side, making a light object on a dark background …
9darkfield illumination — dark ground illumination the throwing of peripheral rays of light upon a microscopical object from the side, the center rays being blocked out: the object appears bright upon a dark background. See under microscope, and see ultramicroscope …
10dark field illumination — noun a form of microscopic examination of living material by scattered light; specimens appear luminous against a dark background (Freq. 1) • Syn: ↑dark ground illumination • Hypernyms: ↑microscopy …