Smile for the camera, Professor Einstein! When the photographer Arthur Sasse asked physicist and scientist Albert Einstein to smile for the camera on his 72nd birthday on 14 March 1951 – this is the image that was taken. Einstein was tired of smiling at all the photographers and instead decided to stick out his tongue. Einstein himself later used the image on greetings cards that he sent to friends. And became one of the most famous and iconic images ever taken of laureate Albert Einstein, who was awarded the Nobel Prize in Physics 30 years before the photograph was taken. You may appreciate this memorable portrait as much as the next fellow, but it’s still fair to wonder: “Did it really change history?” Rest assured, we think it did. While Einstein certainly changed history with his contributions to nuclear physics and quantum mechanics, this photo changed the way history looked at Einstein. By humanising a man known chiefly for his brilliance, this image is the reason Einstein’s name has become synonymous not only with “genius,” …