Fall Backward
November 2, 2014

One of the actual cesium beam atomic clock units used in the 1960’s “flying clocks” experiment the synchronise time around the world. And later in the Hafele–Keating experiment to prove relativity theory. Currently kept at Agilent (formally Hewlett Packard) Melbourne headquarters. It’s accurate down to the nanosecond, but they still put an analog display on the thing. Image credit: Binarysequence/Wikimedia
Yes, strictly speaking, we set the clocks back now because we set them forward in spring, but I think you get the idea.
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