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Letters and drawings of William Lester's 'Solometer', 1820 - 1821

Reference Code: GBR/0180/RGO 14/40: 339-359

Scope and Contents

Fourteen letters from William Lester to the Board of Longitude, chiefly to Thomas Young, concerning his proposals to find longitude by means of the solar rays. The letters provide details of his proposed experiments and of his new invention, the 'Solometer'. Illustrations of this instrument are provided along with technical details on its construction [RGO 14/40: 351 and RGO 14/40: 356-357]. The files also include a related letter written on behalf of Young, and an illustrated legal patent in which Lester embodied extracts of his letters to the Board concerning his discovery and invention.


  • Creation: 1820 - 1821


Conditions Governing Access

From the Management Group:

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22 folio(s) (22 ff.) : Paper

Language of Materials



Lester, William

Finding aid date

2011-12-14 17:43:44+00:00

Repository Details

Part of the Cambridge University Library Repository

Cambridge University Library
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Cambridge CB3 9DR United Kingdom