From: titang78@gmail.com   
      
   Le samedi 1 juillet 2017 20:59:37 UTC+2, Hendrik van Hees a crit:   
   > This is a very nice experiment.   
   >   
   > The only thing, I'd correct in your text, is the statement that your   
   > formula of the force between two currents doesn't follow from the   
   > Lorentz force. The derivation of the quoted law by Ampere is based on   
   > it. You find the derivation in Jackson Classical Electrodynamics.   
   >   
   > --   
   > Hendrik van Hees   
   > Goethe University (Institute for Theoretical Physics)   
   > D-60438 Frankfurt am Main   
   > http://fias.uni-frankfurt.de/~hees/   
      
   Thank for your compliment.   
      
   Ampere's original formula is set in 1822, but the formula of Lorentz   
   force law was established by Grassmann around 1877. So, Ampere's   
   original formula is not based on Lorentz force law   
      
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