6l THE MICROSCOPE. piece (named after the inventor, Huyghens, a Dutch astronomer) and the whole would be arranged thus : … The eye-piece has two plano-convex lenses, A, B, the larger of which is called the field-glass. A diaphragm or stop is placed between them to cut off some of the rays. This arrangement if properly carried out corrects both the spherical and the chromatic aberrations, already spoken of. Some…
Light · Color · Optical illusions · Optics
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
