The Technique of Photomicrography |
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aberration acid adjustment alcohol angle apochromatic apparatus back lens beam of light Bellows length blue body tube camera Canada balsam cent centre chromatic chromatic aberration colour temperature correct cover glass crystals dark-ground depth of field draw tube emulsion eyepiece film filter fitted flash fluorescence fluorite focal length focus focusing give grain green haematoxylin high-power Ilford illumination illustrated immersion infra-red intensity lamp interference iris diaphragm lamphouse Leitz lenses light-source lower magnification medium method micro microscope microtome minutes mirror mounted necessary negative normal numerical aperture oblique oil-immersion optical axis optical system panchromatic phase-contrast photographed photomicrographs placed plane plate polarized light position prism produce quartz radiations rays reflector refractive index resolving power seconds seen silver slide specimen spherical aberration stage stained substage condenser suitable surface technique thickness transmitted light transparent Tube length ultra-violet ultra-violet radiation vertical Watson wave-length Wratten