, move the eye-lens downor up as far as possible, and the Fraunhofer lines cannot be seen.While looking into the spectroscope move the ocular lens up or down,and when it is focused the Fraunhofer lines will reappear. As the dif-ferent colors of the spectrum have different wave lengths, it is… … Fig. 117. Fig. 118. Fig. 119. Fig. 117 (1). Section of the tube and stage of the microscope with the spectralocular or micro spectroscope in position. Amici Prism (g 167). — The direct vision prism of Amici in which the centralshaded prism of flint glass gives the dispersion or separation into…
Microscopy
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