And the behavior of the objects in that world, as indicated by such an apparatus, would be best described as either particles or waves, but never both simultaneously. These descriptions are contradictory—a particle has a definite location, which waves don’t; waves have frequencies and wavelengths, which particles don’t—yet Bohr claimed that this “inevitable dilemma” was not a problem for quantum physics. “We are not dealing with contradictory but with complementary pictures of the phenomena,” claimed Bohr, which are “indispensable for a description of experience.”
interesting. complementary pictures of the phenomena
