author
John Perry
1850–1920
A pioneering Irish engineer and mathematician, he wrote with unusual clarity about science, mechanics, and education at a time when technology was changing fast. His books still stand out for making difficult ideas feel practical and approachable.
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About the author
Born in Garvagh, County Londonderry, on February 14, 1850, he became known as an engineer, mathematician, and teacher who cared deeply about how technical subjects were explained. He worked with Lord Kelvin in Glasgow, later taught in Tokyo during the Meiji era, and went on to hold important teaching posts in Britain.
He was also a lively public voice for better science and engineering education. Alongside his technical work, he wrote books and essays that aimed to make mathematics, mechanics, and applied science easier to grasp for students and general readers.
Elected a Fellow of the Royal Society, he was respected not only for research and invention but also for his gift for explanation. He died in London on August 4, 1920.