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1901 Transatlantic Self-Restoring Coherer, by Lieutenant Luigi Solari, Italy, c. 1901

Inventory Number: 96386

96386-1t 96386-2t

Date: c. 1901

Maker Details: Made by Lieutenant Luigi Solari.

Inscription: None

Size: 80 x 50 x 25 mm (extremity dimensions)

Materials: Glass, ebonite, brass, mercury, iron/carbon.

Other Given Number(s): Christie's 76, Science Museum Loan 1924-491.


A self-restoring coherer used by Marconi for the first transatlantic wireless signals in December 1901. With glass tube mounted in ebonite and clamped between brass fittings, sitting on a shaped ebonite base with lacquered brass terminals. With globule of mercury retained between two iron or carbon rods in glass rod.

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