Albert Einstein · every age

What was Albert Einstein doing at 45?

A patent clerk who upended physics at 26

1. c. 1924

   Extended Bose's idea into Bose–Einstein statistics

   Bose had sent him a new way of counting light quanta.

   Source: en.wikipedia.org

Portrait: Photo: Orren Jack Turner (1947), public domain, via Wikimedia Commons · source