This tutorial investigates the optical pathways in a reflected light microscope. Instructions and a discussion about how to operate this tutorial appear immediately below window.

	Interactive Java Tutorial
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This tutorial is controlled by the three sliders and the inside/outside button. The field diaphragm, aperture (condenser) diaphragm, and illumination intensity sliders control the light intensity within the episcopic illuminator. The inside/outside button toggles between exterior and interior cut-away views of the microscope.