Michael Faraday grew up in a modest family and could not afford expensive schools, nevertheless through diligent self-study he rose through the ranks to become one of the most influential scientists. He joined the Royal Institution as an aide to Sir Humphry Davy, helping in the chemistry laboratory where he discovered chlorine and was the first to liquify chlorine. He soon became an independent experimentalist and is best known for discovering electromagnetic induction and invention of the electric motor. He popularized the terms electrode, cathode, and anode.