noun
complementarity principle
A concept in quantum mechanics, often associated with Niels Bohr, stating that objects have complementary properties that cannot all be observed or measured simultaneously.
相補性原理は量子力学の基本的な考え方の一つです。
The complementarity principle is one of the fundamental concepts of quantum mechanics.
Compound of 相補性 (complementarity) + 原理 (principle). The term is a direct translation of the English 'complementarity principle'.