Engraving by P Pelham after an original painting by H Hysing. Desaguliers (1683-1744), a French-born British inventor and scientist, became experimental assistant to Sir Isaac Newton. He designed a project to heat salt-boilers and similar vessels by steam rather than fire. He added a safety valve to Thomas Savery's steam engine, which along with an internal water jet, condensed the steam in the displacement chambers, improving the design. He appears here holding a magnifying glass, with a glass prism on the table.

Picture Reference: 10198873
Subject: PERSONALITIES > > Desaguliers, John Theophilus
Inventory No.: 1903-0167
Credit: Science Museum Pictorial

Keywords: 18th Century, Desaguliers, Desaguliers, John Theophilus, Engines, Europe, Famous People, Glasses, Historical Personalities, Hysing, Hans, Inventions, Inventor, Isaac, Isaac Newton, John, Magnifying, Magnifying Glasses, Male, Man, Men, Men's, Mercantile Age, Newton, Newton, Isaac, Object, Occupation, Pelham, Peter, People, Personalities, Personality, Portrait, Prisms, Profession, Salt-boilers, Savery, Scientist, Steam, Steam Engines, Theophilus, Thomas, Thomas Savery, Uk, United Kingdom

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