Scottish Chemist who was the first do discover that gases can turn to liquid at extremely low temperatures. The Dewar flask, an insulating storage vessel, is named after him.
He began research at Cambridge University in England.
Not limiting himself to theory, he actually built a practical device that yielded significant amounts of liquid oxygen to prove his hypothesis.
He spent his teenage years an orphan, losing both his parents at age 15.
For his pioneering research, he was one of the first recipients of the