- critical illumination
- the focusing of light precisely upon an object inspected.
Medical dictionary. 2011.
Medical dictionary. 2011.
Critical illumination — or Nelsonian illumination is a method of specimen illumination used for transmitted and reflected light (trans and epi illuminated) optical microscopy. Critical illumination focuses an image of a light source on to the specimen for bright… … Wikipedia
illumination — 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 … Medical dictionary
Köhler illumination — is a type of specimen illumination used in transmitted or reflected light microscopy [ [http://www.olympusmicro.com/primer/anatomy/kohler.html Olympus Microscopy Resource Center Köhler Illumination] ] . It was designed by August Köhler in 1893,… … Wikipedia
microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… … Universalium
HEBREW LITERATURE, MODERN — definition and scope beginnings periodization … Encyclopedia of Judaism
Landing Zone — A Landing Zone or LZ is a military term for any area where aircraft land.In the United States military, a landing zone is the actual point where aircraft land (equivalent to the commonwealth landing point.)In commonwealth militaries, a landing… … Wikipedia
BIBLE — THE CANON, TEXT, AND EDITIONS canon general titles the canon the significance of the canon the process of canonization contents and titles of the books the tripartite canon … Encyclopedia of Judaism
painting, Western — ▪ art Introduction history of Western painting from its beginnings in prehistoric times to the present. Painting, the execution of forms and shapes on a surface by means of pigment (but see also drawing for discussion of depictions in … Universalium
Christianity — /kris chee an i tee/, n., pl. Christianities. 1. the Christian religion, including the Catholic, Protestant, and Eastern Orthodox churches. 2. Christian beliefs or practices; Christian quality or character: Christianity mixed with pagan elements; … Universalium
Lasers and aviation safety — Under certain conditions, laser light or other bright lights (spotlights, searchlights) directed at aircraft can be a hazard. The most likely scenario is when a bright visible laser light causes distraction or temporary flash blindness to a pilot … Wikipedia