Thought for the month

“Resentment is like drinking poison and waiting for the other person to die.” Saint Augustine of Hippo (354 – 430 AD).

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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