Related by context. Frequent words. (Click for all words.) 59 radiowaves 54 microwave radiation 51 electromagnetic waves 51 radio frequency 50 frequency modulation 50 electro magnetic 50 electromagnetic 50 interferometric 49 electromagnetic pulses 49 infrasound 48 detector 48 frequencies 48 radiofrequency 48 Positron Emission Tomography PET 47 photometer 47 radio frequencies 47 radiations 47 electromagnetic fields 47 antenna arrays 47 pulsed 47 terahertz radiation 47 doppler 47 magnetic pulses 46 directional antennas 46 ultrasonic waves 46 ionisation 46 #MHz frequency [001] 46 transmitters 46 synchrotron radiation 46 radiofrequency energy 45 electromagnetic radiation 45 radiation 45 photoluminescence 45 underwater sonar 45 infrared 45 geostationary satellite 45 optical coherence tomography OCT 45 gamma ray 45 interferometers 45 electromagnet 45 detectors 45 gravitational wave 45 infra red 44 magnetic fields 44 electromagnetic induction 44 electromagnetic EM 44 Remote sensing 44 Electromagnetic 44 directional antenna 44 datacasting 44 electromagnetic spectrum 44 satellite 44 sonar 43 radio transmitters 43 fluoroscopic 43 infra red camera 43 infrared lasers 43 VHF 43 ultrasensitive 43 X ray fluorescence 43 transmitter 43 dispersive 43 spectrometry 43 Radiofrequency 43 sensor arrays 43 microwave frequencies 43 ultraviolet wavelengths 43 TerraSAR X 43 laser pulses 43 millimeter wave 43 ultrasonics 43 infrared laser 43 tunable lasers 43 x ray imaging 43 laser 43 VLBI 43 QKD 43 picocell 43 radiation detector 43 terrestrially 43 antennas 43 PET scanners 42 lasers 42 particle beam 42 ganglion cells 42 radar altimeter 42 cellphone towers 42 interplanetary spacecraft 42 laser beams 42 cosmic ray 42 cardiac pacemakers 42 VHF UHF 42 fluorescence imaging 42 microcell 42 LOFAR 42 downlinks 42 Doppler ultrasound 42 device 42 interferometry 42 thermal ablation 42 geostationary satellites