Word: roemer
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First good figure for light's speed was obtained in 1676 by a Danish astronomer, Ole Roemer, who measured the variations in eclipse times of Jupiter's satellites according to Earth's distance from that planet. His calculation was only about 3% too high. First terrestrial measurement was made in 1849 by Armand Hippolyte Louis Fizeau of France, who passed a beam of light through the teeth of a spinning cogwheel. The light struck a mirror, bounced back to the wheel. The wheel had been timed to move just enough in the brief interim for the teeth...
...Lick Observatory in 1892, VI and VII by C. D. Perrine also at Lick in 1904-1905, and VIII by Melotte at Greenwich in 1908. Discovery of the satellites was not only a telescopic feat, but a matter of practical importance to astronomy. As far back as 1675, Ole Roemer, Danish astronomer, noting that the eclipses of Satellite I varied with the distance of the earth from Jupiter, discovered the motion of light, and made the first calculation of its velocity...
...yard free style--Won by Walter R. Roemer '37; second, Edward C. Tenney '37; third, Read (E). Time--2 min., 24 4-5 seconds...
Half-mile broad comp race: First, William R. Roemer '37; second. Percival H. Lombard '37. Time...
Half-mile broad comp race: First heat, Albert G. Hale '36 (3:57 1-2); P. H. Lombard '37; second heat, W. R. Roemer '37 (3:45); Harrison D. Smith...