John Perry

Born in 1850, he became known as an Irish electrical engineer, mathematician, and teacher whose work connected theory with real-world engineering problems. He studied at Queen's College Belfast and later taught in Japan before returning to Britain, where he held important academic posts and built a reputation as an energetic reformer of technical education.

He was especially interested in electrical engineering, mechanics, and the way mathematics was taught to students. Rather than treating science as something distant or purely abstract, he argued for hands-on learning and practical understanding, which made his books and lectures especially influential for readers interested in how things actually work.

He died in 1920. Today he is remembered not only for his scientific and engineering work, but also for the clarity and usefulness of his teaching and writing.