3 ms·
That’s impressively small. I had a rubidium frequency standard which was several orders of magnitude larger I.e medium sized hardback book. This used a cesium b
by cjsuk 9y ago
That’s impressively small. I had a rubidium frequency standard which was several orders of magnitude larger I.e medium sized hardback book. This used a cesium beam approach. Haven’t seen one of them less than a 2U rack before.
Dubious as to the point though as the sources all have a finite operational life, usually a decade or so.
- adrianN 9y agoNowadays wrist watches rarely have a point besides showing off your wealth.
- beobab 9y agoI actually have a Casio watch that is identical to one that I used to have 30 years ago. No frills or whistles. Roughly the same price now as it was back then, too. Under ten pounds. (this obviously does not contradict your point - I mention it because I like talking)
- cjsuk 9y agoI wore a Casio watch before I got a phone in the late 1990s. Really the best utility there is in the watch space. It's a done and dusted thing.
- cjsuk 9y agoThis is true. I don't actually own one because it is of no use to me.
- lwansbrough 9y agoHow do you know what time it is?
- beobab 9y agoLook up a bit on your phone. ;)
- cjsuk 9y agoExactly that! :)
- lwansbrough 9y agoAh so you take your phone out of your pocket to check the time? Like a pocket watch! Cool, now if only there was something you could keep on your wrist that told time.. Would be so much more convenient!
- rtpg 9y agoIt's super interesting how even before phones, knowing the time was so important that we would put it on our wrists. We have clocks in most places. You could put a clock into your bag. But no, this is so important that we would place this on our wrists for instant access.
- cjsuk 9y agoTime is only important if you have to synchronise events with other people.
- SamReidHughes 9y agoOr if you want to keep track of your work schedule.