I didn’t see it live, but thanks to the wonders of the Internet, you can see Tom O’Brian of NIST talking about measurement on the Rachel Maddow show last night:
Tom used to have an office not far from the lab I worked in at NIST, and has a background in laser stuff, so he’s got to be a good guy for this. This was in honor of World Metrology Day, celebrating the hundred-and-mumbleth anniversary of the signing of the Convention on the Meter yesterday. Ironically, all the numbers Tom cites are given in English units.
So, belated happy Metrology Day to all the good folks out there measuring things to ridiculous precision. And good for Rachel Maddow giving some great science a minute in the (cable) spotlight.