From: banerjeeadda1234@gmail.com   
      
   In the analysis of the Bohr model of the atom, the centripetal force is   
   the electrostatic force between the electron and the protons in the   
   nucleus; and the centrifugal force arises from the velocity of the   
   electron, when held as a point mass.   
      
   Centrifugal and centripetal forces are not fundamental forces. They are   
   real or apparent forces resulting from the fundamental forces.   
      
   For instance, the gravitational force is the centripetal force that   
   moves the Earth around the Sun, and the Moon around the Earth, etc.   
      
   The centrifugal force, that which according to standard thought keeps   
   the Earth from falling into the Sun, has to exist in some fashion. How   
   can it exist, though, if it is merely apparent and not real?   
      
   What is the fact?   
      
   The fact is that the centripetal gravitational force does pull the Earth   
   to the Sun and the Earth is thus continuously "falling into" the Sun;   
   however the existence of the Earth's velocity, always acting   
   tangentially to the radial motion, keeps the Earth at the same distance   
   from the Sun (almost). The Earth moves fast enough to keep the same   
   radius - in the same time as it takes to get nearer the Sun had there   
   been no Earth velocity, in that same time the Earth's tangential   
   velocity is just sufficient to compensate for that loss of radial   
   length.   
      
   The above fact is obvious to us, as we are all a part of it all. But   
   what do we really know about the atom, or more particularly, the   
   electron which according to the most accepted model revolves around the   
   nucleus? Surely there will be such shifts in the electron's orbit as are   
   not discernible with the Earth orbit, for electrostatic effects from   
   other orbiting electrons will be involved; and thus the individual   
   electron's orbit should be more erratic than that of any heavenly   
   body. The direct application of centrifugal force computations for the   
   electron, by equating to the constant electrostatic centripetal force,   
   for finding the basic parameters as velocity and radial distance, sounds   
   rather simplistic, consequently.   
      
   Cheers,   
   Arindam Banerjee   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)