Time Travel Back to Last Wednesday

How We Got to Now: Time

My travel caused me to miss the original airing of this, and the site says it’s only active until the 30th. There’s a bit on the Naval Observatory and our (my) Rubidium Fountain Clocks at somewhere around the 45-minute mark, featuring our chief scientist.

A nit/peeve (from the intro to atomic timekeeping): atomic physics and nuclear physics are separate things. Even though we call it atomic power or an atomic bomb, it’s all nuclear processes. The physics behind atomic clocks is not really tied, except at a fairly superficial level, to that of bombs.