Complex sentence: He worked at Imperial College London, UK from 1948-1965, where he was appointed as a lecturer in meteorology in 1948, and in 1961 he was made professor of cloud physics.
Split into simpler sentences: He worked at Imperial College London, UK from 1948-1965. He was appointed as a lecturer in meteorology in 1948, and in 1961 he was made professor of cloud physics.