A set of optical apparatus for all types of optical experiment involving reflection refraction and colour mixing. The principal component is a robust light box finished in matt black with a 20W halogen lamp with 0.75m of twin flex. One end of the box has a cylindrical convex lens in an adjustable sliding mount which allows a parallel convergent or divergent beam to be produced. The other end of the box has a triple aperture system for colour mixing experiments the lateral apertures have adjustable hinged mirrors. All apertures in the box are provided with vertical channels to hold slit plates and/or colour filters.Optical accessories included:Perspex blocks (prisms): One rectangular one semi-circular one triangular prism 60° x 60° x 60° one triangular prism 90° x 60° x 30° one triangular prism 90° x 45° x 45°Cylindrical Perspex lenses: One double concave one double convex (both with the same radius of curvature) one thick double convexMirrors: One curved metallised plastic (parabolic) one curved metallised plastic (semi-circular) one plane glass (mounted on stand)Black plastic slit plates: One with three narrow slits and one narrow slit one with four narrow slits and one wide slitSet of eight colour filters: Primary red primary green primary blue cyan violet yellow orange and magentaSet of eight coloured cards: Red green blue violet orange cyan yellow pinkThe set is supplied complete with a spare lamp and a detailed instruction manual.Dimensions of light box: 170mm x 90mm x 55mmPower supply not included (B8G85458 or similar required).The Light Box is also available to purchase separately (B8A44271).