Recent content by Andurien

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    Problem about uncertainty principle

    Thank you I finally solved I didn't understand the meaning of that 1ns.
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    Problem about uncertainty principle

    And how do I calculate the position uncertainty? Both Δx and Δ p are unkown.
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    Problem about uncertainty principle

    We have an electron pulse of width 1 nanosecond and with kinetic energy of 1keV. We have to calculate Δx and Δp. I have a question regarding this problem. If they give us the kinetic energy of the electron pulse then we know exactly the momentum right? And so the uncertainty of momentum would...
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    Why is there a sin^2(theta) factor in the diatomic molecule Hamiltonian?

    Yep I already solved the problem. You were right Vela i started wrong. I divided the Hamiltonian between the lagrangian for the translation kinetic energy and the rotation kinetic energy so: T_t=\frac{1}{2}M(\dot{x}^2+\dot{y}^2+\dot{z}^2)= \frac{1}{2M} (P_x^2+P_y^2+P_z^2) And then the...
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    Why is there a sin^2(theta) factor in the diatomic molecule Hamiltonian?

    Homework Statement I have to find the hamiltonian for a diatomic molecule, where the molecule can only rotate and translate and we supose that potencial energy doesn't change.Homework Equations The Attempt at a Solution Okey so I used Spherical coordinate system such as the kinetic energy of...