Wu Zhong Chao is a Chinese physicist and mathematician who works at the Centre for Astrophysics in Hefei, China, and thinks about how long it takes to tunnel.

Quotes by Zhong Chao Wu in Time One

In classical mechanics a particle with energy lower than the height of a potential barrier is forbidden to overpass it. In quantum mechanics, it turns out that under this circumstance the particle can tunnel through the barrier, instead.