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This apparatus was inspired by the work of Sir Issac Newton (1642 - 1727) in showing that white light is made form a range of colours called the spectrum. It consists of a circular disc of plastic with narrow edges of colour in the hues of the rainbow, plus white. The sequence of colours is repeated twice around the disk. If spun at high speed, the colours on the disk will appear to merge into an off-white tinge, due to the persistence of human vision. This 200mm diameter disk is mounted on an axle on a wooden handle, and is spun up by means of a pull-cord, rather like a toy gyroscope.

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Hand Spun Newton's Colour Disc

In stock

Product code: 002843
£21.99
This apparatus was inspired by the work of Sir Issac Newton (1642 - 1727) in showing that white light is made form a range of colours called the spectrum. It consists of a circular disc of plastic with narrow edges of colour in the hues of the rainbow, plus white. The sequence of colours is repeated twice around the disk. If spun at high speed, the colours on the disk will appear to merge into an off-white tinge, due to the persistence of human vision. This 200mm diameter disk is mounted on an axle on a wooden handle, and is spun up by means of a pull-cord, rather like a toy gyroscope.
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