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First Atomic Clock Wristwatch

leapsecond.com Essays & writing Essays & articles Hardware & electronics Candidate
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Resurfaced independently across 7 calendar years, with breakout response in 2 of them.

submissions
8
submitters
5
observed span
2010–2022
peak thread · 91 comments
219 pts
latest 20+ return · 2021-01-25
201 pts

Submission timeline

2007–2026

One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.

First comments on top threads

HN comment order

Reminds me of a highly accurate clock used in broadcasting. This clock sends out a time signal around the building to various clocks on walls and equipment, e.g. 'VT machines' (or whatever is used now). I had the pleasure of adjusting this clock for GMT/BST twice a year. The great thing about this clock was that it did not actually tell the time itself. One would have to walk out of the machine room and through a couple of corridors…

Don't miss a previously-featured-on-HN article from the same site about taking an atomic clock up Mt. Rainier to check if you would actually gain billionths of a second as predicted by GR: http://www.leapsecond.com/great2005/ And pictures: http://www.leapsecond.com/great2005/tour/

But if you carry the clock with you then it only tells you the time in your own frame of reference - which is totally useless. I can have a broken watch that tells me the time only for me. If you want to meet someone for coffeedo you want to have to tell them your speed, direction and altitude so they can make the necessary SR and GR corrections to their frame of reference?

The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.

Breakout years
2

100+ points or 50+ comments

Total points
458

reference only — not used in Hall rules or ranking

Total comments
159

reference only — not used in Hall rules or ranking

Every submission

DateTitle as submittedByPointsComments
2010-11-04First Atomic Clock Wristwatch Muzza288
2014-04-16First Atomic Clock WristwatchFirst breakout · Best threadTomte21960
2015-05-06First Atomic Clock WristwatchErrorcod320
2019-10-27First Atomic Clock Wristwatch (2003)Tomte20
2020-04-24First Atomic Clock WristwatchTomte20
2021-01-25First atomic clock wristwatch (2003)Latest 20+ point returndddddaviddddd20191
2021-07-01First Atomic Clock Wristwatchcosmic_quanta20
2022-12-19First Atomic Clock WristwatchTomte20