Related by context. Frequent words. (Click for all words.) 50 Leibniz 50 E = mc2 50 QCD 49 quantum theory 48 Niels Bohr 48 theorems 48 thermodynamics 48 Einstein 47 quantum mechanics 47 physicists 47 Albert Einstein 47 equations 46 positron 46 Bethe 46 Newtonian 46 Feynman 46 Thermodynamics 45 Edwin Hubble 45 Isaac Newton 44 Heisenberg 44 Brownian motion 44 electromagnetism 43 high temperature superconductivity 43 Edward Teller 43 Einstein theory 43 Richard Feynman 43 quantum entanglement 42 Enrico Fermi 42 Johannes Kepler 42 phenomenological 42 singularities 42 superfluidity 42 theorem 42 Theorists 41 Bose Einstein condensate 41 Theoretical 41 mathematicians 41 relativity 41 chirality 41 Francis Crick 41 Faraday 41 particle physicists 41 ETH Zurich 41 particle physicist 41 spacetime 41 general relativity 41 quantum physics 41 Thomas Malthus 41 theoreticians 41 Mathematician 40 von Neumann 40 theoretical physicists 40 quark gluon plasma 40 cosmological 40 cosmologists 40 Alan Turing 40 galaxy formation 40 dynamical 40 physicist 40 Galileo Galilei 40 celestial bodies 40 quantum gravity 40 ENIAC 40 physics 39 Sigmund Freud 39 Fourier 39 quanta 39 gravitation 39 theorists 39 fermions 39 Higgs Boson 39 Louis Pasteur 39 Hofstadter 39 Max Planck 39 philosophers 39 Linus Pauling 39 multiverse 39 quantum 39 atomic nuclei 39 mathematical equation 39 Schopenhauer 38 Nobelist 38 Astrophysicist 38 Asimov 38 Dirac 38 irreducible complexity 38 Mandelbrot 38 differential equations 38 radioactive decay 38 theoretical physicist 38 magnetism 38 mathematical 38 Gravity Probe B 38 pendulums 38 theoretic 38 mathematical equations 38 ontological 38 parapsychology 38 Physicist 38 Rutherford Appleton 38 quantum mechanical