FTP name this conserved rotational quantity defined as the cross product of position and its corresponding linear quantity, symbolized L.
In the one-dimensional equation for the radial wave function, the term for this quantity is equivalent to a repulsive potential.  None of the individual components of its operator commute with each other, but its operator does commute with the Hamiltonian of it.  A consequence of the conservation of this quantity is that a radius vector drawn from the sun to any planet seeps out equal areas in equal time intervals, and Bohr proposed the quantization of it in units of Planck's constant divided by 2 pi.  In classical mechanics, the derivative of this quantity with respect to time is the net torque.  FTP name this conserved rotational quantity defined as the cross product of position and its corresponding linear quantity, symbolized L.
In the one-dimensional equation for the radial wave function, the term for this quantity is equivalent to a repulsive potential.  
angular momentum