[Michael Faraday and John Frederic Daniell.]
Engraved by Geo. Barclay, Gerard St. Soho. From a Daguerreotype by Mr Beard. [n.d., c.1860.] Photogravure with facsimile signatures. 165 x 140mm, 6½ x 5½". A photographic portrait of two prominent English scientists working on electricity: Michael Faraday (1791-1867) who discovered electromagnetic induction, diamagnetism and electrolysis; and John Frederic Daniell (1790-1845), whose 'Daniell Cell' (1836) was a battery more efficient than voltaic cells.
[Ref: 27774] £190.00
(£228.00 incl.VAT)