Demainbray's turquoise disc

Made:
1745-1755

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Pair of turquoise and coloured glass discs in wooden frames and stands, 1745-1755.
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Pair of turquoise and coloured glass discs in wooden frames and stands, 1745-1755.
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum, London

Science Museum Group
© The Board of Trustees of the Science Museum, London

Turquoise coloured glass disc, one of two, in wooden frame and stand, unknown maker, 1745-1755. Once belonged to Stephen Demainbray.

Pair of coloured glass discs. These glass discs once belonged to Stephen Demainbray and were used by him in his lectures on natural philosophy. In lecturing on the topic of colour, he was able to celebrate Isaac Newton's (1642-1727) theories on the spectrum, and treat the theories of his rivals 'in a candid manner'. Demainbray worked as superintendent at the King's observatory at Kew from 1768 and his collection of instruments and apparatus was absorbed into the King's own collection. They were itemised in the Queen's catalogue, but there described as blue and yellow, rather than turquoise and yellow.

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Details

Category:
King George III
Object Number:
1927-1156/2
Materials:
boxwood, glass, ivory and paper (fibre product)
type:
optical demonstration equipment
taxonomy:
  • furnishing and equipment
  • tools & equipment
credit:
King's College, London

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