Illumination critical

Illumination, critical

(Science: microscopy) The formation of an image of the light Source in the object field.

The Nelsonian method in which the light Source is imaged in the plane of the specimen. A ribbon filament or arc lamp is required to give uniform illumination, the lamp must be focusable, the filament position must be adjustable in all directions. The use of an achromatic condenser is advised.

Synonym: Nelson illumination.

Please contribute to this project, if you have more information about this term feel free to edit this page

This page was last modified on 3 October 2005, at 21:16. This page has been accessed 1,018 times. 
What links here | Related changes | Permanent link