Related by context. Frequent words. (Click for all words.) 66 quantum mechanics 63 quantum entanglement 63 Brownian motion 61 quantum theory 60 quantum physics 60 spacetime 60 fermions 60 quantum mechanical 58 Newtonian 58 symmetries 58 superposition 57 quantum gravity 57 general relativity 56 relativistic 56 supersymmetry 55 Einstein theory 55 circularity 55 Occam Razor 54 subatomic 54 thermodynamics 54 subatomic particle 54 cosmological constant 53 simultaneity 53 Bose Einstein condensate 53 gravitational lensing 53 phonons 53 singularity 53 multiverse 52 E = mc2 52 Thermodynamics 52 cosmological 52 superfluidity 51 topological 51 atomic nucleus 51 relativity 51 fractals 51 macroscopic 51 logical fallacy 51 high temperature superconductivity 51 electromagnetism 51 invariant 51 theorem 51 interferometry 51 subatomic particles 51 entropy 50 fractal 50 Heisenberg 50 String Theory 50 chirality 50 particle physics 50 muon 50 physics 50 resonators 50 thermodynamic 50 atomic nuclei 50 oscillation 50 isotropic 50 scalar 50 differential equations 50 photons 50 atoms 50 theoretic 50 Aristotelian 50 perturbation 49 WIMPs 49 crystal lattice 49 gravitation 49 plasmonic 49 universals 49 metamaterial 49 positron 49 photonic crystal 49 ontological 49 celestial bodies 49 hydrogen atom 49 tautology 49 geometrical 49 phenomenological 49 undefinable 49 phenomenology 49 cosmic 49 dynamical 49 gravitational 49 nanoscopic 48 muons 48 syllogism 48 theoretical 48 nonlinear 48 alpha particles 48 ferromagnetic 48 logical reasoning 48 atomic particles 48 optical tweezers 48 diffraction 48 photonic crystals 48 electron beams 48 gravitational wave 48 electron 48 particle 48 magnetar 48 nanometer scale