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そんなこと書かれてねえけどwwwww
そもそもさ
日本語の教科書なんてソースにしてる時点でねwwwwwww

なんで定義を読まねえの？
だからお前は低学歴なんだよ

Tunneling in atoms and molecules
Friedrich Hund (1896–1997) was the first to make use of quantum mechanical barrier penetration in discussing the theory of molecular spectra in a series of papers in 1927. The first of these 2 was submitted from Copenhagen in November 1926, acknowledging encouragement from Niels Bohr and Werner Heisenberg and support from the International Education Board (IEB), founded in 1923 by John Rockefeller Jr. The paper deals with an outer electron (Leuchtelektron, or luminous electron, in Hund’s words) moving in an atomic potential with two or more minima separated by classically impenetrable barriers (Schwellen, that is, sills or ridges).

https://pubs.aip.org/physicstoday/article/55/8/44/412308/The-Early-History-of-Quantum-Tunneling-Molecular