As John says, "A new record has just been set for the shortest measured event. Man has always thought electrons jumped from one orbit to the next, causing photo emission, was instantaneous or immediate. But, they were wrong. Using some sort of super duper stopwatch, they timed the jump of an electron at 20 attoseconds, or, 20 billionths of a billionth of a second. What I think is funny is that they are amazed at the time it takes for the jump to occur while I am blown away by the fact that they can measure something that fast. Incredible... "
And what the heck is an "attosecond"? Click here for the answer!
Now I have "Time Has Come Today" by the Chambers Brothers stuck in my head. Thanks a lot John!