for quantitative studies—for example, for calculation of the total mass and concentration of dry matter in a microscopic specimen, such as a plant or animal cell; of the refractive index; and of the size of the specimen (see figure ). the interference-contrast method is frequently combined with other...
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rod lens endoscopes for keyhole surgery optics for laserdisc /cd borescopes wave theory of aberrations awards spie gold medal ( ) rumford medal ( ) fellow of the royal society [ ] scientific career fields physics , optics , mathematics institutions university of reading imperial college notable students...