Thought for the month

“It is a general popular error to suppose the loudest complainers for the public to be the most anxious for its welfare.” Edmund Burke, politician (1729 – 97).

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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