All my schools had them. Sometimes you’d catch them doing a resync and all the hands would spin around. I think they probably couldn’t rotate CCW so had to go around the long way if they needed to roll back a few minutes.
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LifeInMultipleChoice@lemmy.world 16 hours agoReally? I never knew any of them were synchronized, that’s cool if so. I seem to remember us pulling them off the wall at our schools and changing them twice a year or replacing the batteries. Having them wired with synchronization may be overboard, but it is kind of cool
hardcoreufo@lemmy.world 14 hours ago
childOfMagenta@jlai.lu 16 hours ago
Could they be synchronised independently? My grandfather in France had a clock that was receiving a radio signal I think from Strasbourg. They’ve been around for a while. I remember being up late during day light hour change and i would suddenly hear the second hand rush forward. It would stop one whole hour on the switch back. I would use it to adjust my watch. Nowadays I use raw GPS and any mobile phone is synced from the network anyway.
Waraugh@lemmy.dbzer0.com 16 hours ago
My high school was small (graduating class under 50; five small towns combined), and in the 90s, ours were synchronized, just realized I always wondered what they used.
joel_feila@lemmy.world 16 hours ago
Probably the clocks all used a synchronous motor. It spins baaed on ac current. After juat set the clocks to the right time when you plig them in
Waraugh@lemmy.dbzer0.com 16 hours ago
Thank you, I’ll need to look into it, it was obvious they were synced because they got adjusted for daylight savings from somewhere and they all slowly changed time over the course of an hour if I recall correctly, it always fascinated me.
LifeInMultipleChoice@lemmy.world 16 hours ago
Would that not mean if the power goes out after say a hurricane, the all the clocks have to be reset manually or can they somehow change them all remotely? A mechanism going threw the walls to change them from a single location sounds like a lot of work to get a synchronized clock
joel_feila@lemmy.world 16 hours ago
Im sire there is. A way to send a comand to clockw to fast-forward to a certain time.
RememberTheApollo_@lemmy.world 15 hours ago
Yep. The schools I went to had synchronized analog clocks. They would all “adjust” together if they were off at all. Some kind of clockwork solenoid.
LemmyKnowsBest@lemmy.world 14 hours ago
Yes I remember sometimes they would remotely adjust our clocks and you could see the hands moving quickly until they stopped in their intended position. Pretty genius for the old days.