Is Quantum Tunneling Faster than Light

At 1:50, the wavelength does NOT describe how well determined the position is. The wave function you showed is correct, but the way it was described verbally is not. The picture showed a waveform that was a composition of several different wavelengths, which is what is necessary to have a well determined position. If you only have only one wavelength for a free particle, then the amplitude of the wave function will be the same everywhere

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