The reason that horizontal antennas are not effective for ground wave propagation is that the horizontal electric field that they create is short circuited by the earth. Ground wave propagation is ...

IN a previous letter 1, I described an experiment on a wave-length of 4 m. in which a predicted recovery on crossing a land/sea boundary was obtained. As there indicated, this phenomenon may be of ...

The specific spatial size of the EMIC wave source region and the 3D aspect of how the propagation path is formed from space to ground are yet to be elucidated. The international collaborative ...

The TRANSMISSION of acoustic energy through a medium via a SOUND WAVE. See: SOUND ... Wiener and Keast, "Experimental Study of the Propagation of Sound Over Ground," Journal of the Acoustical Society ...