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wood prints portrait wood prints 19th century wood prints england wood prints english wood prints engraving wood prints heat wood prints laboratory wood prints machine wood prints mechanical wood prints man wood prints physic wood prints research wood prints science wood prints work wood prints worker wood prints

photographs portrait photos 19th century photos england photos english photos engraving photos heat photos laboratory photos machine photos mechanical photos man photos physic photos research photos science photos work photos worker photos

JAMES PRESCOTT JOULE (1818-1889). English physicist. Joule researching the mechanical equivalent of heat. Wood engraving, French, 19th century.