George III was dubbed "Farmer George" by satirists, at first to mock his interest in mundane matters rather than politics, but later to contrast his homely thrift with his son's grandiosity and to portray him as a man of the people. Under George III, the British Agricultural Revolution reached its peak and great advances were made in fields such as science and industry. There was unprecedented growth in the rural population, which in turn provided much of the workforce for the concurrent Industrial Revolution. George's collection of mathematical and scientific instruments is now owned by King's College London but housed in the Science Museum, London, to which it has been on long-term loan since 1927. He had the King's Observatory built in Richmond-upon-Thames for his own observations of the 1769 transit of Venus. When William Herschel discovered Uranus in 1781, he at first named it "Georgium Sidus" (George's Star) after the King, who later funded the construction and maintenance of Herschel's 1785 40-foot telescope, which was the biggest ever built at the time.