This is not a joke.
If pocket watches like these being hung on a hook, they immediatly start to swing.
The balance energy is extracted and the watches start to run inaccurate.
In this case I have measured about 5 seconds per hour.
The deflection of the oscillation is about 2 mm at the lower end of the watches.
Not easy to show this by a photo, but it should be possible to notice it.
So, don´t use PW holders with hooks.
Any PW owner can do this test.
Regards
HEBE
Ha! That's too cool :-)
It's only right that a watch becomes it's own pendulum....
Hebe, thats a very interesting post. Thanks for sharing although I am not yet own a PW.
Cheers Chris
Great observation!
To add my own empirical data, it also works with my Doxa, which suggests that the phenomenon (as expected) may not be brand-specific. I postulate that given a sensitive enough suspension, wristwatches would behave in a similar manner. We should apply for a seven-figure EU research grant to further develop the idea.
That's when you really need a tourbillon.
It's only right that a watch becomes it's own pendulum....
Yes Mark, it works like a pendulum.
But the vibrations are modulated, because it is not a harmonic pendulum.
Would be interesting to discribe the function with a mathematic formular :-)
And this is the pendulum generator, also known as balance :-)
A PW it a must have for any collector :-)
Sure, it does not depend of brands.
But it does depend of the weight of the watch and the weight and size of the ballance.
Hm, interesting idea, looking for a PW with a tourbillon.
Do you know such PWs ?
But would a tourbillon really solve the oscillation ?
I am not sure at the moment, but will think about it.
A three axes tourbillon would reduce it time by time ?!
Hebe, I have seen some pocket watches with tourbillons come up for sale. Girard Perregeaux produced one and also had a marine chronometer with a two minute tourbillon which would have hung nicely on a thick chain. When I get my Cal 972 back from service, I will try your experiment.
Hebe, I fully agree! Feel free to use my email adress, I am open for any good options ;-)!
Cheers Chris