Related by context. Frequent words. (Click for all words.) 62 Niels Bohr 60 quantum theory 58 Richard Feynman 57 quantum mechanics 55 Albert Einstein 55 theoretical physicist 55 Feynman 54 general relativity 53 quantum physics 53 Francis Crick 53 E = mc2 52 Einstein 52 theoretical physicists 52 physicist 52 Einstein theory 51 cosmological constant 51 James Lovelock 51 theoretical physics 51 positron 51 Bose Einstein condensate 51 superfluidity 51 Higgs Boson 51 von Neumann 51 quantum gravity 51 spacetime 50 physicists 50 particle physics 50 singularities 50 cosmologists 50 Newtonian 50 Leibniz 50 electromagnetism 49 quantum entanglement 49 Stephen Hawking 49 Isaac Asimov 49 Johannes Kepler 49 physics 49 mathematician 49 magnetar 49 Simon Baron Cohen 49 Astrophysicist 49 Andre Geim 48 atomic nuclei 48 supersymmetry 48 Isaac Newton 48 theorems 48 Mandelbrot 48 HD #b [002] 48 Mathematician 48 Theoretical Physics 48 atomic nucleus 48 Brownian motion 48 thermodynamics 48 Enrico Fermi 48 Bethe 48 Novoselov 47 Nobelist 47 parapsychology 47 high temperature superconductivity 47 Dirac 47 astrophysics 47 cosmologist 47 Antimatter 47 Gliese #g 47 particle physicists 47 Polanyi 47 Peter Gruenberg 47 quantum mechanical 47 planetoid 47 QCD 47 Ramanujan 47 Alan Turing 47 antiprotons 47 double helix structure 47 astrophysicists 46 Particle Physics 46 particle physicist 46 Konstantin Novoselov 46 solar nebula 46 theorist 46 Astrophysicists 46 Steven Pinker 46 cosmological 46 atomic particles 46 Niels Bohr Institute 46 relativity 46 Physicist 46 NMR spectroscopy 46 mathematicians 45 Johann Wolfgang von Goethe 45 differential equations 45 Physics 45 astrophysical 45 Newtonian physics 45 Iapetus 45 neutron stars 45 Edward Teller 45 Ray Kurzweil 45 Heisenberg 45 JILA 45 Theorists