The Microscope: Excerpts from The Museum of Science and ArtWalton and Maberly, 1856 |
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achromatic achromatic lens adjustment angle of aperture angular aperture animalcule apparent magnitude appear axis blood body centre Chap chromatic aberration colour compound concave convex lens corpuscles diameter direction disc distance distinct vision divisions effect engraved equal expedient explained extreme eye-glass eye-piece field of view focal length focus glass globules greater horizontal illuminated Images produced inch increased insect instrument LARDNER'S MUSEUM larva larvæ latter lenses less light lines magnifying power method micrometric microscopic objects milk milled head minute motion mounted moved MUSEUM OF SCIENCE naked eye necessary object-glass object-piece obliquity observer Optical Images pass piece placed plane plate polarised position presented prism proportion rack and pinion reflected reflector refracting power rendered right angles scale screw seen shown in fig side slide spherical aberration stage surface telescope tion Tract upon Optical translucent transparent tube turned varying vertical visible visual angle visual magnitude
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