Task: Text Categorization
Input (English): DC Josephson effect occurs because of this effect. This effect is used in STMs, which are a type of microscopes. Calculating the probability of this happening for a Heaviside step function requires using the boundary conditions that the wavefunction and its derivative have to be continuous everywhere. The probability of this happening has a hyperbolic sine squared in its denominator and this was used to explain (*) alpha decay as protons would need a large amount of energy to leave the nucleus. This effect happens when a potential barrier is greater than the energy of a moving particle and the particle moves through the barrier. For 10 points, name this quantum mechanical effect.
Output (English): Science