Comments:
Does anyone know if the rare earth magnet in the 7727 will magnetise your other watches?
Especially if you keep them in close proximity in a watch case or pouch? I mean, that's part of the reason why some moving parts in the 7727 is made of silicon for its anti magnetic properties right?
thanks
Don't think so
It would be useful to see where those magnets are placed in the movement.
Anyway, even though it's likely a µT magnetic field, i would NOT put any other watch above or below your breguet.
We're really crazy when we argue such "important" issues ;-)
Haha ya you would think we are discussing about a CERN project.
Sometimes I get so deep into this rabbit hole hobby of ours. Would make sense 100-200 yrs ago.
To be honest
I've found much more competences and skills in many forumers than in (supposed-to-be) people involved in this sector.
Physics is a main subject, not only for the principles but also for the interactions.
We're surrounded by magnetic fields, so it's not a silly question that one we're arguing.
Physics is a main subject, not only for the principles but also for the interactions.
We're surrounded by magnetic fields, so it's not a silly question that one we're arguing.
Magnetic fields decline in strength rapidly over distances and these are tiny magnets!
They are strong but tiny!
Shouldn't be a problem at all compared to the magnetic clasp on your ipad case or whatever
You are right! Here is the official reply.
Thanks for your inquiry we received through the internet:
I am pleased to attach below the reply from the Research & Development Department of Breguet HQ in Switzerland:
The question your client is absolutely legitimate.
The magnets used in our magnetic pivot system are as a matter of fact some of the strongest on the market. Nevertheless, the small size and the quickly decreasing value of the magnetic field generated by those magnets has no influence on the other time-pieces in close proximity of it.
The numerical simulations and the practical measurements realised during the development of this product confirmed the presence of a magnetic field of a few hundreds of Ampere per Meter [A/m] on the crystal’s surface. This value is smaller than the standard requirement of a watch considered resistant to magnetism (ISO 764 (NIHS 90-10) : 4'800 [A/m]). Added to that, this magnetic field decreases very fast as the distance widens so much so that at just one centimetre it is only as strong as the Earth’s magnetic field (40 [A/m]).
Taking into account the distance imposed by its construction (casing) of the other watch, any negative influence on its oscillator is therefore highly improbable.
I hope this information is answering your client’s concerns.
As you can see, this Breguet timepiece is indeed very special and highly sophisticated – a real revolution in watchmaking technology.
Best regards and I wish you a nice weekend
I am pleased to attach below the reply from the Research & Development Department of Breguet HQ in Switzerland:
The question your client is absolutely legitimate.
The magnets used in our magnetic pivot system are as a matter of fact some of the strongest on the market. Nevertheless, the small size and the quickly decreasing value of the magnetic field generated by those magnets has no influence on the other time-pieces in close proximity of it.
The numerical simulations and the practical measurements realised during the development of this product confirmed the presence of a magnetic field of a few hundreds of Ampere per Meter [A/m] on the crystal’s surface. This value is smaller than the standard requirement of a watch considered resistant to magnetism (ISO 764 (NIHS 90-10) : 4'800 [A/m]). Added to that, this magnetic field decreases very fast as the distance widens so much so that at just one centimetre it is only as strong as the Earth’s magnetic field (40 [A/m]).
Taking into account the distance imposed by its construction (casing) of the other watch, any negative influence on its oscillator is therefore highly improbable.
I hope this information is answering your client’s concerns.
As you can see, this Breguet timepiece is indeed very special and highly sophisticated – a real revolution in watchmaking technology.
Best regards and I wish you a nice weekend