Complementarity (Physics) - Wikipedia - Basil Hiley  ## Metadata - Author: **Basil Hiley** - Full Title: Complementarity (Physics) - Wikipedia - Category: #articles - URL: https://en.wikipedia.org/wiki/Complementarity_(physics) ## Highlights - In physics, complementarity is a conceptual aspect of quantum mechanics that Niels Bohr regarded as an essential feature of the theory.[1][2] The complementarity principle holds that objects have certain pairs of complementary properties which cannot all be observed or measured simultaneously