Tokyo researchers created the strongest controllable magnetic field in history

Post by etiam » Fri, Sep 28, 2018, 7:10 PM UTC

lostlogin wrote: post #31

etiam wrote: post #14

Earlier quoted context omitted.

And broadly speaking by the cube of the distance from the source apparently. But in this case it decays from a mind-boggling starting level by everyday life standards. If that camera is 5 meters away from the source the field there is still about 10 Tesla. I think that's about an order of magnitude more than most MRI machines for clinical purposes, and those already warrant a good deal of care with effects on metals.

MRI vendors require some parts be photographed at service. Standard tool for this is a phone camera. I don’t know if this applies above 3T but at that level it’s all fine. And as for clinical field strengths - there are 7T scanners being marketed, but they are rare.

Post by lostlogin » Fri, Sep 28, 2018, 10:53 PM UTC

etiam wrote: post #32

lostlogin wrote: post #31

Earlier quoted context omitted.

MRI vendors require some parts be photographed at service. Standard tool for this is a phone camera. I don’t know if this applies above 3T but at that level it’s all fine. And as for clinical field strengths - there are 7T scanners being marketed, but they are rare.

I personally don't work with machines like that, and never have, but I imagine most service would be out of the question without bringing down the magnetic field? If the magnet is not active, certainly consumer electronics could be used even near it. If the magnet is active at anything close to it's operation level, I'm seriously skeptical that a cell phone would fare okay close to it. Have you tried for yourself? Ar…