James Bradley, an Englishman, reconfirmed Roemer’s work and the physics community finally admitted that light was not instantaneous—it has a finite speed. Over the last three hundred years, the speed of light has been measured 164 times by sixteen different methods. Roemer thought that the speed of light was 308,600 kilometers per second (km/sec). In 1875 at Harvard, using the same method more precisely, scientists found the mean to be slightly smaller. In 1983, the National Bureau of Standards used