Thought for the month

“Prejudice is a great time saver. You can form opinions without having to get the facts”.
Elwyn Brooks White, Author (1899-1985).

Friday, 16 December 2016

What is a zeptosecond - not a lot!

A team in Germany have measured helium photoionization with zeptosecond precision.  This is the greatest accuracy of time determination ever achieved, as well as the first absolute determination of the timescale of photoionization.

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