This kit contains 30 experiments. They are: Single Ray Reflection; Divergent Rays; Lateral and Vertical Inversion; Position in a Plane Mirror; Multiple Reflections I; Multiple Reflections II; Rotation of a Plane Mirror; Images in a Plane Mirror-Parallax; Reflection in a Concave Mirror; Center of Curvature; Circular Aberration; Convex Mirror; Parabolic Reflector; Simi-Circular Block Refraction; Parallel-Sided Block Refraction; Total Internal Reflection using Semi-Circular Block; Total Internal Reflection using Triangle Prisms; Double Refraction using Parallel Rays; Double Refraction using Color Disperson; Color Absorption by Filters; Newton's Experiment with Spectra; Double Refraction using Bi-Convex Lens; Radius of Curvature; Focal Line or Focal Plane of a Bi-Convex Lens; Chromatic Aberration by Bi-Convex Lens; Bi-Concave Lens; Colors of Objects; Addition of Colors; Colored Shadows; Shadows. Kit includes: rectangular prism, semi-circular prism, triangular (45, 45, 90) prism, triangular (30, 60, 90) prism, triangular (60, 60, 60) prism, Bi-concave lens, Bi-convex lens, Large Bi-convex lens, Plane mirror, Semi-circular mirror, Parabolic mirror, Red filter, Orange filter, Yellow filter, Green filter, Blue filter, Violet filter, Cyan filter, Magenta filter, Slit plate with 2 narrow slits, Slit Plate with 1 narrow slit and 3 narrow slits, Slit Plate with 1 wide and 4 narrow slits, spare bulb and instruction booklet.

A favorite of teachers and students for years, the original "Hodson" Light Box and Optical Set includes all the equipment needed to perform 30 experiments on reflection, refraction, and color. The durable light box has an adjustable lens that can project a parallel, convergent, or divergent beam. The front face accommodates slit plates or color filters and the rear hinged mirrors allow mixing of all 3 beams. Lenses and mirrors are equipped with handles to prevent smears and scratches and all supplies fit securely in a thick foam box for safe storage. One 12-V, 3-amp DC power supply (item# 757100) is needed but not supplied.