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Momentum operator

  1. Mar 9, 2014 #1
    This is not really a homework problem but rather a homework-related question.. When I came across my homework (and my textbook: Atkin's physical chemistry 9th Ed.), they defined the momentum operator as:

    p_x = - ( [itex]\hbar[/itex] / i ) * d/dx...

    but i have seen in other sources that they define it as p = ( [itex]\hbar[/itex] * i ) * d/dx...

    they multiply i rather than divide and it is also positive.. i dont known if they represent the same or not, if so.. how can you convert one to the other? Thanks and sorry if this is a very silly question..
     
  2. jcsd
  3. Mar 9, 2014 #2

    micromass

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    We have

    [tex]\frac{1}{i} = -i[/tex]
     
  4. Mar 9, 2014 #3
    Thanks! I know it was something easy and silly. Thanks again.
     
  5. Mar 10, 2014 #4

    vanhees71

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