Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 195
e Microscope ; and whilst a pencil of light,entering at the side aperture and striking against this inclinedsurface, is reflected by it downwards through the objective on tothe object, the rays proceeding upwards from the object pass up-wards (with some loss by reflexion) through the plane glass…
Microscopy · Biology
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