I'm going though the particle in a box lesson in my physics textbook right now. I understand all the math, but don't understand a lot of the physics behind it. Also this is an intro physics course, we're only covering the basics of quantum mechanics and not going into too much detail.(adsbygoogle = window.adsbygoogle || []).push({});

How come we use the time independent Schrodinger equation for the particle in a box problem? In general, do you always use the time independent Schrodinger equation for stationary state (energy is known with no uncertainty)?

Why is the potential energy of the particle inside the box always equal to zero and infinite outside the box?

Thanks

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# Particle in a box Schrodinger equation

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