Many Quantum-Mechanical Models Are Widely Used In Solid

Abstract

One  of  the  founders  of  Quantum  Mechanics once  said:  "Oh,  I  don't  like  this  Solid  State Physics -he  takes  PRIMITIVE  Models  and describes  them  real  crystals  [1]."  But  it  was Solid  Physics  that  helped  to  understand  that Quantum     Mechanics itself     is     built     on PRIMITIVE,  and  not  on  INVARIANT  Models. And   it   helped,   thereby,   and   to   solve   some cosmological problems [2].During   my   conversation   with   Professor   Lev Termen,  who,  being  late  for  the  beginning,  sat down with me and asked about previous reports, before  his  personal  speech  at  the  Big  Scientific Council of the Ioffe Institute of the Academy of Sciences  [3],  he  dropped  a  few  remarks  on  the main   scientific   reports   of   previous   speakers. That, they say, they did this with AF Ioffe half a century  ago,  right  after  Lenin  signed  them  a decree  on  the  creation  of  our  institute