Breaking down copper 'loaves' using a water-powered iron-tipped stamp, 1734.

Basic electrical cell, c 1990s.

Barber's shaving bowl, Algerian, 19th century.

'View of Swansea', Wales, 1850s.

Operation for Stones in the Head', Netherlands, 17th century.

Copper zinc binary alloy. Light micrograph

MCC copper aluminium / alumina fibres. Ligh

Copper 37% zinc. This is a higher magnifica

Nickel, copper, silver braze via molybdenum

Copper aluminium (11.8%) annealed and etche

Copper phosphorous alloy. Light micrograph

Sample of intermetallic compound of copper and aluminium, 1925.