4 HN users recommended this explainer4 months2020–2026score 5
Years with an HN recommendation, 2007–2026
HN calls it one of the best explanations of how atomic clocks actually work.
CuriousMarc powers up a vintage HP 5061A cesium beam clock and explains both the quantum principle and the HP implementation in detail. It is part of a longer atomic clock series.
“I've yet to see a description better than in CuriousMarc's HP 5061A series” (HN, 2026)
CuriousMarc has an excellent episode on an atomic clock. [this video] I like to pretend I can fix computers, this guy can actually fix computers, which is probably why I find his show so fascinating.
CuriousMarc made a video last week where he uses a vintage HP 5061A atomic clock and explains how it works. It's interesting to see that atomic clocks aren't just some giant laboratory thing, but a product you could buy, even in the 1960s. [this video]
CuriousMarc uploaded a video to Youtube showing the startup procedure for an HP 5061A cesium clock [0]. They switch on the clock and compare it to a GPS reference. Seeing the abstract description realized in concrete terms through hot cesium tubes, phase locked loops, and Lissajous curves was really fascinating. [0] [this video]
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