Related by context. Frequent words. (Click for all words.) 63 spectroscopic 60 calibration 59 absorbance 59 XMM Newton 58 spectra 57 lumen output 57 spectral 57 interferometry 57 confocal 56 brightness 56 Type Ia supernovae 56 CCD camera 56 LED illumination 55 synchrotron radiation 55 WFC3 55 diffraction 55 illumination 54 downlight 54 irradiance 54 ionisation 54 spectroscopy 54 reflectance 54 interferometer 54 VLBA 54 shorter wavelengths 54 NICMOS 54 FRET 53 National Synchrotron Light 53 ionization 53 spectrometry 53 FT IR 53 isotropic 53 confocal microscopy 53 ESO Very Large Telescope 53 redshift 53 luminance 53 solar corona 53 infrared IR 53 optical microscopy 53 luminescence 52 neutron scattering 52 RGB LED 52 fluorescence 52 astrophysical 52 MeV 52 radiometer 52 wavefront 52 spectrally 52 spectrophotometers 52 ionospheric 52 repeatability 52 spectrometers 52 dosimetry 51 Spectrometer 51 gravitational wave 51 μm 51 Hubble observations 51 astronomical objects 51 spectrophotometer 51 celestial objects 51 transmittance 51 #.#μm [001] 51 photodiode 51 anisotropy 51 luminosity 51 X ray emission 51 hyperspectral 51 gamma ray 51 quantitative measurements 51 spatial resolution 51 infrared 51 Raman spectroscopy 51 electron density 50 reflectivity 50 fluorescence imaging 50 imager 50 auroral 50 STIS 50 frequency comb 50 InGaAs 50 X ray fluorescence 50 beamline 50 beamlines 50 gravimetric 50 spectrometer 50 chromatographic 50 FTIR 50 optical microscopes 50 X ray beam 50 ICP OES 50 adaptive optics 49 luminaire 49 infrared spectroscopy 49 Gaussian 49 magnifications 49 photodetectors 49 signal analyzer 49 radiometric 49 z = 49 MALDI 49 infrared wavelengths