A Robust light box in matt black finish with a 12 V 24 W axial filament
lamp with flexible leads. One end of the box takes a cylindrical convex
lens in an adjustable sliding mount to enable production of convergent,
parallel or divergent beams. Complete with accessories which consist of:
5 Plastic blocks, one rectangular, One semicircular, One equilateral prism
60¬∞ x 60¬∞ x 60¬∞, One right angle prism 90¬∞ x 60¬∞ x 30¬∞ and one right angle
prism 90¬∞ x 45¬∞ x 45¬∞. 3 Cylindrical acrylic lenses: one double convex,
one double concave, both having the same radius of curvature and one
thick convex lens. 3 Mirrors, one plane glass, one curved parabolic and
one curved semi-circular. 2 Slit plates, one with three narrow and one
narrow slits, the other with four narrow and one wide slits 1 Set of eight
colour filters, Red, Green, Blue, Cyan, Violet, Yellow, Orange and Magenta.
1 Set of coloured cards, Red, Green, Blue, Violet, Orange, Cyan, Yellow and
Pink. Complete with one spare lamp, in box.