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What’s an attosecond?

As I continue to ponder the mind boggling character of quantum physics (the¬†10^-n reality), I’m fascinated by articles about novel experiments which routinely explore¬†infinitesimal time scales and distances. Nanoscale (10^-9) is amazing! But now there’s the¬†attosecond. This Space.com article (April 30, 2018), “The ‘Attoclock’ Shows How Fast Electrons Move in a Millionth of a Billionth… Continue reading What’s an attosecond?