Apparatus for measuring incident solar heat

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probably made in Edinburgh

Postcard of Apparatus for measuring incident solar heat.
© National Museums Scotland

Apparatus for measuring incident solar heat

This apparatus for measuring incident solar heat was made around 1870, probably in Edinburgh. It is unsigned. This form of apparatus was designed in by Thomas Stevenson (1818-87).

The apparatus is incomplete: when water in the glass globe expands under the action of sunlight, some of it passes out at the upper bent tube. The water level is kept constant by a supply from the cistern above (lacking).

Thomas Stevenson was one of the founders in 1855 of the Scottish Meteorological Society, but was known mainly as a lighthouse engineer to the Northern Lighthouse Board. He made significant contributions to lighthouse illumination.

Record details

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Online ID: 000-100-102-812-C
Image Rights Holder: National Museums Scotland
Project: 0098: National Museums Scotland
Project description | View all records in project
Ref: National Museums Scotland  T.1983.149
Date: Around 1870
c. 1870
What: Apparatus / integrator of sun's heat
Subject: 10. METEOROLOGY (Departmental Classification)
Who: Thomas Stevenson, Edinburgh (Designer)
Where: Scotland, Midlothian, Edinburgh
Description: Integrator of sun's heat apparatus, designed by Thomas Stevenson, Edinburgh, unsigned, c. 1870
  • Catalogue of the Special Loan Exhibition of Scientific Apparatus, 1876. London: 1876, p 713, item 2899 
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