An Irishman, Englishman and Scotsman go into a pub and each order a pint of Guinness. Just as the bartender hands the mover, three flies buzz down and one lands in each of the pints.
Sir Harold JeffreysBorn 22 Apr 1891; died 18 Mar 1989 at age 97. English astronomer, geophysicist and mathematician who had diverse scientific interests. In astronomy he proposed models for the structures of the outer planets, and studied the origin of the solar system. He calculated the surface temperatures of gas at less than -100°C, contradicting then accepted views of red-hot temperatures, but Jeffreys was shown to be correct when direct observations were made. In geophysics he researched the circulation of the atmosphere and earthquakes. Analyzing earthquake waves (1926), he became the first to claim that the core of the Earth is molten fluid. Jeffreys also contributed to the general theory of dynamics, aerodynamics, relativity theory and plant ecology.« |
