Originally posted by sonhouse
What surprises me is gaining ten times the res with just a 25% increase in magnetic field strength. Why isn't the increase in resolution only 25%, that is to say, linear with field strength?
It is great that they can do that without having to have a 94 Tesla field for 10X resolution!
What surprises me is gaining ten times the res with just a 25% increase in magnetic field strength. Why isn't the increase in resolution only 25%, that is to say, linear with field strength?
I don't know but you got me thinking and then I noticed the link said this:
“...A more expensive wire material, niobium-tin, would in theory carry enough current at the same diameter to create fields up to 20 Tesla, but it is much more brittle than niobium-titanium and difficult to wind. ...”
Well, 20 Tesla is just slightly over 70% of 11.75 Tesla. Thus, all they have to do to get a 20 Tesla is to find a way to workaround all the difficulties of using niobium-tin wire to get much greater resolution still. And, if a 25% increase in Tesla gives a ten fold increase in resolution, then, if my mathematical approximations are about correct, a 70% increase would give roughly 250 times greater resolution and that would mean an improvement in resolution from 100 microns to about 400 nanometres which would be easily good enough to distinguish between individual neurons in the brain and even most of the connections between them!
Anyone: Is there anything wrong with my above extrapolation here? does the link inadvertently give a false premise? -my conclusion does seem to me to be rather optimistic!