Blackboard Optics Microscope and Telescope
Purpose
Demonstrates compound microscope and refracting telescope configurations using magnetic blackboard optics. Students see how two-lens systems form intermediate and final images through visible ray tracing, connecting lens equations to observable ray paths.
Figure 1:
Microscope configuration on a chalkboard with ray projector (left), objective lens forming an inverted intermediate image, and eyepiece lens. Chalk annotations mark object points, image points, and ray extensions to the eye.
Figure 2:
Two-lens system on a magnetic whiteboard showing rays converging to an intermediate image between the lenses, then refracting through the eyepiece.
Figure 3:
Close-up showing rays converging at the intermediate image and refracting through the second lens. Note the visible chromatic dispersion (color fringing) in the refracted rays.