British chemists and physicists Michael Faraday (1791-1867, right) and John Frederic Daniell (1790-1845, left) in Faraday's laboratory. Despite lacking a formal education, Faraday made several major advances in chemistry, magnetism and electricity. He devised the first electric motor and equipment such as transformers and dynamos. He worked at the Royal Institution, London, rising from laboratory assistant to Humphrey Davy (1813), to Professor of Chemistry (1833). His lectures helped popularise science amongst the public. Daniell is best-known for his invention of the Daniell cell, a type of electric battery that improved on voltaic cells. He also worked on meteorology, inventing several measuring instruments such as a hygrometer, a pyrometer and a barometer. Photographed in 1843.