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History
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Portrait of Sir Francis Ronalds painted in 1867
Portrait of Sir Francis Ronalds painted in 1867
Elements of the subterranean electric telegraph built by Francis Ronalds in 1816
Elements of the subterranean electric telegraph built by Francis Ronalds in 1816
The first successful camera for making continuous recordings of scientific instruments, built by Francis Ronalds in 1845. This example is an electrogr
The first successful camera for making continuous recordings of scientific instruments, built by Francis Ronalds in 1845. This example is an electrograph measuring atmospheric electricity
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A voltaic pile, the first battery
A voltaic pile, the first battery
Benjamin Franklin
Benjamin Franklin
Sir Francis Ronalds
Sir Francis Ronalds
Michael Faraday portrayed by Thomas Phillips c. 1841–1842
Michael Faraday portrayed by Thomas Phillips c. 1841–1842