Related by context. Frequent words. (Click for all words.) 55 Brownian motion 55 interferometry 55 spectroscopy 53 spectroscopic 52 galaxy formation 52 astrophysical 52 microlensing 52 muon 52 photonic crystal 51 optical microscopy 50 rubidium 50 anisotropy 50 GRBs 50 absorbance 50 X ray emission 50 superfluidity 50 quasar 50 cosmic microwave background 50 XMM Newton 50 neutrino 50 interferometer 49 redshift 49 electron spin 49 magnetic resonance spectroscopy 49 particle beam 49 magnetar 49 photometric 49 spectrometry 49 holography 49 FRET 49 spectra 49 NICMOS 49 luminescence 49 Crab Nebula 49 Eta Carinae 49 GeV 48 subatomic particle 48 gamma ray 48 WMAP 48 magnetization 48 supernova remnant 48 cosmic ray 48 hydrogen atom 48 amplitudes 48 high temperature superconductivity 48 photodetector 48 picosecond 48 HD #b [002] 48 z = 48 planet orbiting 48 quasars 48 transmission electron microscope 48 electron 47 scanning tunneling microscope 47 numerical simulations 47 excitation 47 gamma ray burst 47 femtosecond 47 astronomical observations 47 quantum dot 47 isotropic 47 JILA 47 supernova explosion 47 fluorescence 47 neutron 47 COROT 47 pulsars 47 conductance 47 electrochemical 47 gravitational wave 47 synchrotron radiation 47 spectrometer 47 diffraction 47 Bose Einstein condensate 46 adaptive optics 46 accretion disk 46 infrared telescope 46 isotopic 46 oscillations 46 torus 46 quantum gravity 46 nanometer scale 46 electrochemistry 46 extrasolar planet 46 spatial resolution 46 infrared laser 46 lasing 46 coronal 46 planet orbits 46 occultation 46 IceCube 46 supernovae 46 gravitational lensing 46 visible wavelengths 46 microscale 46 gamma ray bursts 46 atoms 46 precession 46 terahertz 46 radioactive decay 46 molecular dynamics