Related by context. Frequent words. (Click for all words.) 71 infrared radiation 63 infrared 62 UV light 58 infrared laser 58 ultraviolet light 58 electromagnetic waves 56 ultra violet light 56 sunrays 55 ultraviolet rays 55 infra red 55 sun rays 54 infrared wavelengths 54 sunlight 54 X ray beam 53 reflectance 53 UV rays 53 ultraviolet 53 infrared IR 53 UVB radiation 53 sun ultraviolet rays 53 water vapor 52 ultraviolet UV 52 rays 52 UV radiation 52 electron beams 51 photonic crystal 51 electrical currents 51 transmittance 51 laser pulses 51 photodiodes 51 harmful UV rays 50 radiative 50 transmissive 50 phosphors 50 photons 50 gamma rays 50 UV 50 reflective surfaces 50 wavelengths 50 photodiode 49 electromagnetic 49 magnetic fields 49 harmful rays 49 electrode 49 ultra violet 49 electromagnetic radiation 49 electrodes 49 ionized gas 49 diffraction 48 radiant heat 48 aerosol particles 48 reflective coating 48 airborne particles 48 laser beam 48 fluorescence 48 ablate 48 laser pulse 48 microwaves 48 dust particles 48 CCD camera 48 infrared spectrometer 48 titanium oxide 48 Raman spectroscopy 48 laser ablation 48 submicron 48 laser beams 48 Terahertz 47 optically 47 magnetic 47 shorter wavelength 47 ultraviolet radiation 47 Thermal imaging 47 cosmic rays 47 HEPA filters 47 irradiance 47 wavefront 47 lasing 47 photosensitive 47 non invasively 47 ionizing 47 UVB rays 47 nanoscopic 47 reflectivity 47 sebaceous glands 47 sensor 46 absorptive 46 photonic crystals 46 exhaust gases 46 infrared sensors 46 meteoroids 46 waveguides 46 conductive 46 hyperspectral imaging 46 plasmonic 46 waveguide 46 solar cells 46 microbubbles 46 ion beam 46 excitons 46 refract 46 imager