author
Best known for making steam power understandable, this 19th-century engineer wrote clear, practical books that opened up the workings of engines for a wide readership. His most famous work, A Catechism of the Steam Engine, helped explain how steam technology was used in industry, transport, and everyday engineering.

by C. E. John Bourne
Born in Dublin around 1813, John Bourne trained as an engineer in the early years of Britain’s industrial age. The Science Museum Group notes that he worked with John Duffus and Co. in Aberdeen and then with Caird and Co. in Glasgow, where he developed ideas about steam-engine valve design.
Bourne became known as a civil engineer and an authority on steam-engine literature. He wrote technical works including A Catechism of the Steam Engine, a question-and-answer guide that described steam engines and their use in mines, mills, steam navigation, railways, and agriculture.
His writing stands out for being practical and accessible. Rather than treating engineering as something mysterious, he explained machinery in a direct way that helped readers understand how engines were built, managed, and improved.