网站首页  英汉词典

请输入您要查询的英文单词:

 

单词 Quantum mechanical tunnelling
释义

Quantum mechanical tunnelling

英语百科

Quantum tunnelling

Animation showing the tunnel effect and its application to an STM
Quantum tunnelling through a barrier. The energy of the tunnelled particle is the same but the amplitude is decreased.
Quantum tunnelling through a barrier. At the origin (x=0), there is a very high, but narrow potential barrier. A significant tunnelling effect can be seen.
An electron wavepacket directed at a potential barrier. Note the dim spot on the right that represents tunnelling electrons.

Quantum tunnelling or tunneling (see spelling differences) refers to the quantum mechanical phenomenon where a particle tunnels through a barrier that it classically could not surmount. This plays an essential role in several physical phenomena, such as the nuclear fusion that occurs in main sequence stars like the Sun. It has important applications to modern devices such as the tunnel diode, quantum computing, and the scanning tunnelling microscope. The effect was predicted in the early 20th century and its acceptance as a general physical phenomenon came mid-century.

随便看

 

英汉网英语在线翻译词典收录了3779314条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2024 encnc.com All Rights Reserved
更新时间:2025/6/23 10:47:28