Educational visual apparatus

A device for observing and photographing tensioned films which include a liquid substance containing a light dispersing agent comprising a supportive structure including a substantially planar base which is transparent to all wave lengths of visible light and at least one wall portion, which is transparent to all wave lengths of visible light and mounted to extend upwardly from said base and slanted relative to said base at an acute angle for supporting tensioned films of variable sizes and shapes on both said base and at least one said transparent wall portion, and means for illuminating the inner surface of the tensioned film including means defining a source of visible light wave lengths for forming a layered spectral pattern of light on the inner surface of the film which is visible through said transparent wall portion.