Glossary of Medical Terms

Our online medical glossary of medical terms and definitions includes definitions for terms related to treatment, and general medicine


Abbe's theory is based on the fact that a non-self-luminous particle, which is illuminated by an extraneous source, gives rise to diffracted easy rays, in addition to the dioptric pencil. He stated that to form a good microscopical image as much of the diffracted rays as possible must be intercepted by the objective. With closely ruled lines, his theory is easily demonstrated by observing the back lens of the objective, for here the diffracted rays can be observed directly if the aperture diaphragm is closed. It can be shown that, when the illumination is arranged to exclude the diffracted images, resolution is lost.
materies morbi   maternal   maternal age 35 and over   maternal antibody   maternal behaviour   maternal-child health centres   maternal-child nursing   maternal cotyledon   (0)
© 2006-2021 Last Updated On: 06/13/2021 (0.02)