Itinvolvestheproblemofwirelesswaves,whichwerequicklyfoundtotravellongdistancesdespitethefactthattheoreticallytheyshouldnothavebeenabletofollowthecurvatureoftheEarth.
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It involves the problem of wireless waves, which were quickly found to travel long distances despite the fact that theoretically they should not have been able to follow the curvature of the Earth.