NEWTON COLOUR DISC – GUPTA BRAND 8006155

For demonstrating that white light may be composed from all the spectral colours by rotation of multi-colored disc. Comprising a multi-coloured metal disc 150mm. diameter mounted on metal stand and driven by belt with the help of driving wheel, fitted with a handle, individually packed.
As above, with coloured disc 150mm dia & mounted on light metal base for schools.
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