| 释义 |
pa·schen-back effect
\ˈpäshənˈbäk-\ noun
Usage: usually capitalized P&B
Etymology: after Friedrich Paschen died 1947 and Ernst Back b1881 German physicists
: a limiting stage of the Zeeman effect which occurs as the magnetic field causing it is greatly increased and in which the extremely fine structure pattern after going through more or less complicated anomalous stages again approaches a normal triplet character |