XPost: sci.physics.relativity   
   From: bill.sloman@ieee.org   
      
   On 20/02/2026 7:41 am, J. J. Lodder wrote:   
   > wBill Sloman  wrote:   
   >   
   >> On 20/02/2026 12:13 am, J. J. Lodder wrote:   
   >>> Bill Sloman  wrote:   
   >>>   
   >>>> On 19/02/2026 9:56 pm, J. J. Lodder wrote:   
   >>>>> Bill Sloman  wrote:   
   >>>>>   
   >>>>>> On 19/02/2026 7:49 am, Ross Finlayson wrote:   
   >>>>>>> On 02/18/2026 12:43 PM, Python wrote:   
   >>>>>>>> Le 18/02/2026 à 20:13, Ross Finlayson a écrit :   
   >>>>>>>> ..   
   >>>>>>>>> and, you know, magnetic monopoles, is widely employed   
   >>>>>>>>> in medical imaging and the like.   
   >>>>>>>>   
   >>>>>>>> No.   
   >>>>>>>   
   >>>>>>> Resonance imaging (NMR) is a thoroughly different mechanism   
   >>>>>>> than Roentgen rays.   
   >>>>>>   
   >>>>>> But as the name implies, it's nuclei of the atoms involved that   
   >>>>>> exhibit the resonance. It's a remarkably low energy effect, and you   
   >>>>>> need remarkably high magnetic fields to get it to give you a   
   >>>>>> detectable signal.   
   >>>>>   
   >>>>> Nevertheless, it is easily demonstrated in the kitchen   
   >>>>> with some simple electronics.   
   >>>>   
   >>>> Sort of.   
   >>>>   
   >>>> https://en.wikipedia.org/wiki/Nuclear_magnetic_resonance   
   >>>>   
   >>>> There are lots of different ways to exploit nuclear magnetic resonance.   
   >>>> The earth's magnetic field is high enough to let you devise experiments   
   >>>> that can demonstrate the effect on a kitchen table.   
   >>>   
   >>> Nothing 'sort of'.   
   >>> You -can- easily demonstrate the effect on the kitchen table.   
   >>> (at audio frequencies)  Wikipedia is right here.   
   >>   
   >> Yes, but we were talking about medical imaging, not nuclear magnetic   
   >> resonance in general, and your assertion is the irrelevance here, as the   
   >> text you snipped pointed out.   
   >   
   > Which 'we' dear Bill?   
      
   If you can't work that out, you aren't worth talking to.   
      
   > I replied to your   
   > ===   
   >>>>> But as the name implies, it's nuclei of the atoms involved that   
   >>>>> exhibit the resonance. It's a remarkably low energy effect, and you   
   >>>>> need remarkably high magnetic fields to get it to give you a   
   >>>>> detectable signal.   
   > ===   
   > which is just plain wrong.   
      
   In your ever-so-authoritative opinion.   
      
   > As a matter of fact, zero to ultra-low frequency NMR   
   > is a flourishing research field these days,   
      
   It's cheap to do, so lots of graduate students get stuck with studying   
   it. The results of their research don't seem to get published in   
   high-impact journals.   
      
   --   
   Bill Sloman, Sydney   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)