InfiniteZero writes with this quote from MSNBC:
"Einstein once said, 'A person who has not made his great contribution to science before the age of 30 will never do so.' That peak age has shifted considerably, a new study found, with 48 being prime time for physicists. ... For instance, in physics, in the early 20th century, a rise in young scientists generating prize-winning work coincided with the development of quantum mechanics. In fact, in 1923, the proportion of physicists who did their breakthrough work by age 30 peaked at 31 percent. Those who did their best work by age 40 peaked in 1934 at 78 percent. The proportion of physics laureates producing Nobel Prize-winning work under age 30 or 40 then declined throughout the rest of the century."