🚀 go-pugleaf

      Every question could be answered by saying "it just does", but usually in
      physics we go to the highest level model so far devised.  In earlier days
      (pre-Franklin) we could have said "things just attract".  But now we can
      go a bit further and look at all forces as exchanges of particles, such
      as gravitons and photons, and distinguish between attractive and
      repulsive interactions with the help of Feynmann diagrams.

 >> Opposite charges are attracted to each other and like charges are repelled.
 >>  Why?
 >>
 >
 >The fact that there are attractions and repulsions lead us to postulate that
 >there are two kinds of charge.  Why they attract and repel is no more known
 >than why two objects attract each other gravitationally.  They just do and
 >gravity is the name we give this phenomenon.  Electricity is the name we give
 >to the phenomenon related to forces by charges.  We don't know what it IS, but
 >we know pretty well what it DOES.
 >
 >--
 >------------------------------------------------------------------------------
 -
 >Van E. Neie                                      ven@physics.purdue.edu
 >Purdue University                                neie@purccvm.bitnet
 >------------------------------------------------------------------------------
 -



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Connie Patten
Lincoln Sudbury RHS
390 Lincoln Rd
Sudbury, MA 01776
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