Dr. Royston Piggott's Addition to the Microscope
نویسنده
چکیده
nature of the image, whether uncovered or immersed, and when the coincidence of its axis* with that of the microscope was attended to, gave beautiful images, admitting of great amplification, and at once testing the corrections of the objectives. "With this arrangement it was found that when any object ia viewed by even the best microscope, there are formed " e idol a," or false images, besides the true one formedBby the centrical rays. When the objective is over-corrected these are found to lie
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