Related by context. Frequent words. (Click for all words.) 64 Raman scattering 64 electromagnetic pulses 64 plasmon 63 Gamma rays 62 Solar flares 62 ionisation 62 temperature gradients 62 microwave radiation 62 directivity 61 paramagnetic 61 surface plasmons 61 inhomogeneous 61 soliton 60 nonlinearity 60 substorm 60 obscuration 60 photoluminescence 60 soundwaves 60 electron density 59 ionize 59 ultraviolet wavelengths 59 dispersive 59 interferometers 59 collimated 59 gravitational lens 59 helium atoms 59 diffraction pattern 58 radiative 58 oscillatory 58 impactors 58 exosphere 58 electromagnetic 58 magnetic fields 58 X ray emission 58 tropospheric 58 atmospheric turbulence 58 permittivity 57 submillimeter 57 interferometric 57 ion beams 57 Cosmic rays 57 visible wavelengths 57 diffracted 57 isotropic 57 excitations 57 superlens 57 infrared wavelength 57 beam splitter 57 irradiance 57 Laser beams 57 scintillation 57 obliquity 57 piezoelectric materials 57 tuneable 57 magnetic flux 57 atmospheric phenomena 57 electromagnetically 57 aurorae 57 ZPE 57 detuning 57 frequency electromagnetic 57 absorbance 57 phonon 57 stimulated emission 56 interplanetary spacecraft 56 terahertz radiation 56 diffractive 56 chemical reactivity 56 amplitudes 56 decoherence 56 keV 56 ionised 56 macroscale 56 negative refraction 56 illuminance 56 Hawking radiation 56 observability 56 infrared rays 56 Ultraviolet radiation 56 auroral 56 TGFs 56 photonic crystal 56 ultraviolet UV light 56 photometer 56 shorter wavelengths 56 electron beams 56 electro magnetic 56 voltage spikes 55 upper troposphere 55 photometry 55 spatio temporal 55 pulsations 55 optical wavelengths 55 aether 55 magnetization 55 ultrasonic waves 55 ionospheric 55 attosecond 55 elemental composition 55 solar corona 55 photodetector