Changes

* The [[RedjacAmelia Earhart]] entity, incarnated as "Jack flies from the Ripper", kills seven women in [[China]] on [[EarthUnited States]]to County Londonderry, Northern Ireland in 14 hours 54 minutes.* The first positron is discovered by Carl D. Anderson. * At the August 31 – A total solar eclipse is visible from northern [[Roxy TheaterNorth America|Canada]] in through northeastern parts of the [[New York CityUnited States]].* The Kennedy–Thorndike experiment is published, showing that measured time as well as length is affected by motion, in accordance with the comic duo theory of [[George Burns|Burns]] and [[Gracie Allen|Allen]] first performed a classic comedy routinespecial relativity. At the close of the show, Burns would say, "* ''Say good night, GracieBuck Rogers in the 25th Century''"debuts on American radio. It is the first science fiction program on radio.* Zero-length springs are invented, revolutionizing seismometers and Gracie replied, "''Good night, Gracie''"gravimeters.