Dictionary.com
definitions
  • synonyms

tunnel effect

See more synonyms for tunnel effect on Thesaurus.com
noun
  1. Physics. a quantum-mechanical process by which a particle can pass through a potential energy barrier that is higher than the energy of the particle: first postulated to explain the escape of alpha particles from atomic nuclei.
Show More

Origin of tunnel effect

First recorded in 1930–35
Also called tun·nel·ing.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for tunnel effect

tunnel effect

noun
  1. 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
Show More
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012