Optical disk with accessories and light component

MACHINE TRANSLATION (not authorised yet)

Called also Hartley's optical disc. The set shows the refraction of the light beam after passing through different lenses. Includes a 23 cm diameter rotating disk with a scale (360 degrees), a set of magnetic lenses and acrylic prisms (triangular, trapezoidal, semicircular, convex and concave lenses) and an instrument to produce light beams together with diaphragms. The whole on a standing board.