“Contradiction is not a sign of falsity, nor the lack of contradiction the sign of truth.” Blaise Pascal, French mathematician and physicist (1623 – 62).
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.