| http://www.w3.org/ns/prov#value | - The greatest link in this chain came later as a direct result of Hertz's experiments, namely, the waves of wireless telegraphy, whose wave-length have to be reckoned in kilometres. (Nauen {A German radio transmitter] sends out waves having a wave-length of 12 kilometres, or 71/2 miles); the smallest and most delicate link is added at the other end of the chain, as we shall see, in the form of R??n
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