Hi, On a related note, some trivia that might be of interest.
The master pendelum clocks is still in their basement in Observatoire Royal de Belgique, I've seen them. They have their dedicated heating-system to help control the temperature, ovenizing the whole basement building (the clocks are in a separate house within the basement room. Similarly the pendelum clocks of Observatoire de Besançon is still there, except for one which is taken out, restored and in the museum. The buildings there have a 3 m deep ditch around the buildings, so that ground movements does not disturb observations, but the clocks are deeper down into two separate rooms, so their temperature variations are stabilized to some degree that way. It's fun to see these things, many times things is still there and maybe not operational, but for sure part of the history. Cheers, Magnus On 2019-11-23 09:29, Jean-Louis Rault wrote: > Hi all > > A friend of mine offered me a secondary electric clock that was in use > at Observatoire Royal de Belgique, in Brussels, at the end of the 19th > century. > > The manufacturer is Peyer Favarger & Co, Neuchatel, Switzerland. > > I'm wondering why the largest hand is used for minutes, and the > smaller hands for hours and seconds > > Any idea ? > > Jean-Louis > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
