| 单词 | tunnel effect |
| 释义 | tunnel effect in British Englishnoun physics the phenomenon in which an object, usually an elementary particle, tunnels through a potential barrier even though it does not have sufficient energy to surmount the barrier. It is explained by wave mechanics and is the cause of alpha decay, field emission, and certain conduction processes in semiconductors tunnel effect in American Englishnoun Physics a quantum-mechanical process by which a particle can pass through a potential energybarrier that is higher than the energy of the particle: first postulated to explain the escape of alpha particles from atomic nuclei Also called: tunneling Word origin [1930–35]This word is first recorded in the period 1930–35. Other words that entered Englishat around the same time include: DNA, acoustic phonetics, boondoggle, kickback, presetExamples of 'tunnel effect' in a sentence |
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