Which quantized result arises when an electron's probability density function extends through a classically forbidden region?

💡 Explanation

Electron quantum tunneling occurs because the wave function allows the particle to penetrate a barrier, therefore tunneling can happen even if total energy is less than that of the barrier, rather than reflection alone with insufficient energy.

• Which mechanism prevents eddy currents forming within superconducting magnets?
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• Which risk increases when applying partially coherent laser light to measure sub-wavelength structures?