Calculate the number 819
NUMBERMANIA: Calculate the number 819 using numbers [8, 5, 2, 8, 40, 649] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers: 2
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Maurice EwingBorn 12 May 1906; died 4 May 1974 at age 67.William Maurice Ewing was an American geologist and geophysicist who made fundamental contributions to understanding of marine sediments and ocean basins. He worked in a range of subjects, making contributions to earthquake seismology, explosion seismology, marine acoustics, sedimentology, and tectonics. He adapted seismic exploration methods to use in the oceans; explicated a large segment of the earthquake seismogram, the coda; did studies of Earth's free oscillations; and described the ocean sound channel and the dispersion of sound in seawater. He also developed or greatly improved the bathythermograph, the piston corer, heat-flow probes, sonar, hydrophones, gravimeters and deep-sea cameras. |