EntityQ5610983· pop 9· linked from 69 articlesground waveSign in to saveradio wave propagating along the Earth's surfaceConnectionsionosphereEntityshortwave radioEntitylong waveEntityInternational Standard Book NumberEntitysoilEntityelectric currentEntityelectromagnetic radiationEntitydigital object identifierEntitytroposphereEntitytemperate climateEntityInternational Telecommunication UnionEntitydiffractionEntitypolarizationEntityskin effectEntitymedium waveEntityinverse-square lawEntityatmospheric refractionEntitylow frequencyEntitysurface waveEntityhigh frequencyEntityCategoriesRadio frequency propagationSurface waves