How can I know the maximum magnetic field a device can cope with?
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From: Merciadri Luca on 14 May 2010 17:11 Hi, I would like to know, for some devices that I have (e.g. PDA, calculator, etc.), the maximum magnetic field they can cope with. How can I know it, without testing (obviously), and if no such information are displayed on the device's sheet? Thanks.
From: Phil Allison on 14 May 2010 23:10 "Merciadri Luca" > > I would like to know, for some devices that I have (e.g. PDA, > calculator, etc.), the maximum magnetic field they can cope with. ** Why don't you post details of the actual scenario you are considering ?? What IS the source of your imaginary magnetic field ?? A loudspeaker magnet or an MRI machine ??? > How > can I know it, without testing (obviously), and if no such information > are displayed on the device's sheet? ** It's not specified cos there is no meaningful way to specify such a thing and very few people would be the least bit interested. ...... Phil
From: Merciadri Luca on 15 May 2010 06:56 On May 15, 5:10 am, "Phil Allison" <phi...(a)tpg.com.au> wrote: > "Merciadri Luca" > > > > > I would like to know, for some devices that I have (e.g. PDA, > > calculator, etc.), the maximum magnetic field they can cope with. > > ** Why don't you post details of the actual scenario you are considering ?? > > What IS the source of your imaginary magnetic field ?? > > A loudspeaker magnet or an MRI machine ??? Not MRI machines, evidently, but I have one calculator and one PDA, and both could be important for me at work. If I have to work in an environment where the magnetic field is intense, and that I carry them, I do not want them to be broken in some way. I can't foresee the place where I am going to work at, but I can predict that if the magnetic field is too important (i.e. special plant), my devices won't resist to it. > ** It's not specified cos there is no meaningful way to specify such a thing > and very few people would be the least bit interested. Why? The wrapper device's shells are known, and the chemical and physical properties of these shells are known. Experimental, or at least theoretical measures can be done to know, at least approximatively, the maximum magnetic field the different devices can cope with. This looks like an important characteristic of a device, especially if this device is an engineering device. How can you go to some plant with high magnetic fields (i.e. physics research, etc.), carry your personal devices, and know if they are still going to work there, or at least if they are not going to be broken, or undergo data corruption?
From: Tom Biasi on 15 May 2010 09:18 "Merciadri Luca" <merciadriluca(a)gmail.com> wrote in message news:51f7d735-f6a4-4b77-b828-413c8bd320d5(a)o12g2000vba.googlegroups.com... On May 15, 5:10 am, "Phil Allison" <phi...(a)tpg.com.au> wrote: > "Merciadri Luca" Why? The wrapper device's shells are known, and the chemical and physical properties of these shells are known. Experimental, or at least theoretical measures can be done to know, at least approximatively, the maximum magnetic field the different devices can cope with. This looks like an important characteristic of a device, especially if this device is an engineering device. How can you go to some plant with high magnetic fields (i.e. physics research, etc.), carry your personal devices, and know if they are still going to work there, or at least if they are not going to be broken, or undergo data corruption? Wouldn't there be restrictions on what you could bring into these areas? You really can walk around with things in your pocket anywhere you want?
From: Merciadri Luca on 15 May 2010 14:06
On May 15, 3:18 pm, "Tom Biasi" <tombi...(a)optonline.net> wrote: > "Merciadri Luca" <merciadril...(a)gmail.com> wrote in message > > news:51f7d735-f6a4-4b77-b828-413c8bd320d5(a)o12g2000vba.googlegroups.com... > On May 15, 5:10 am, "Phil Allison" <phi...(a)tpg.com.au> wrote: > > > "Merciadri Luca" > > Why? The wrapper device's shells are known, and the chemical and > physical properties of these shells are known. Experimental, or at > least theoretical measures can be done to know, at least > approximatively, the maximum magnetic field the different devices can > cope with. This looks like an important characteristic of a device, > especially if this device is an engineering device. How can you go to > some plant with high magnetic fields (i.e. physics research, etc.), > carry your personal devices, and know if they are still going to work > there, or at least if they are not going to be broken, or undergo data > corruption? > > Wouldn't there be restrictions on what you could bring into these areas? > You really can walk around with things in your pocket anywhere you want? Yes, but it might be shown `only devices coping with magnetic fields <= x T can be brought here', and you do not know what you can do, in this case, because you do not know the magnetic fields your devices can cope with. It is not always said `don't bring your calculator or any device here.' |