n Eponym of the week: Ohio-born Charles F. Richter. Receiving his Ph.D. in theoretical physics from Caltech in 1928, he immediately went to work at Pasadena’s new Seismology Laboratory, where, with co-worker Beno Gutenberg, he developed the Richter scale for measuring earthquake intensity in 1935.

n The board game Clue underwent a major redesign earlier this year. The six suspects now have first names and occupations and three of the weapons have been replaced with new ones. Some of the nine rooms have been changed as well. (Thanks to Matt Jones of Portland, Ore.)

Who played the title role in the 1950 biopic “The Jackie Robinson Story”?

A) Ossie Davis

B) Bill Cosby Sr.

C) Sidney Poitier

D) Jackie Robinson

Wednesday’s answer: The radioactive decay of uranium-238 results in its transformation to the atomically stable lead-206.

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