SimilarityRank
spectra 0.788 25572
spectroscopy 0.688 29325
spectrometer 0.623 46182
wavelength_of 0.614 44330
NGC_[number] 0.612 64522
wavelength 0.605 18465
at_[number]_nm 0.600 89440
fluorescence 0.595 31271
quasar 0.592 61018
reflectance 0.586 69752
physical_property_of 0.581 62578
crystal_structure 0.579 74059
gamma_ray 0.579 77142
chemical_composition 0.578 69659
excitation 0.577 42253
visible_light 0.573 54663
luminosity 0.567 61003
diffraction 0.567 70190
hydrogen_atom 0.564 96670
the_spatial_distribution_of 0.563 84710
ultraviolet 0.561 74117
spectral 0.556 40533
exposure_time 0.555 98193
the_spectrum_of 0.554 32610
correlation_of 0.553 33439