quantum tunneling

Probability defies walls

Quantum tunneling is a phenomenon in which a particle passes through a barrier it classically shouldn't have enough energy to cross.

In quantum mechanics, particles behave as probability waves, allowing a small chance of appearing on the other side of an obstacle.

The effect explains radioactive decay, enables scanning tunneling microscopes, and makes certain chemical reactions possible.

Quantum tunneling allows electrons to pass through insulators in microchips.

Opposites
physical mechanism

quantum tunnelinggoing around

Moving in orbit

classical vs. quantum behavior

quantum tunnelingclassical mechanics

Laws governing macroscopic motion

Newtonian physics · classical physics · Newtonian mechanics

barrier interaction

quantum tunnelingquantum confinement

Size-limited particle behavior

localization

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