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On stock 39 pcs

100 years wireless telegraphy Issue number
117
Date of issue
15.04.1997
Face value
10.00 Sk
Sell price
0.17 €

In the past years of nineteenth century have been registered a several significant discoveries and contrivances that caused development of wireless telegraphy and evolution of further branchs of learning simultaneously. In the 1886 the German physicist Heinrich Hertz proved the existence of electromagnetic waves. On this evidence began to develop the wireless telegraphy and later radiotechnique. From the 1893 Nikola Tesla using so called .Tesla's steams for wireless transformation of reports. The Guglielmo Marchese Marconi was the first one who emited Morse's signs wireless to several hundred metres. In the first time he broadcasted the radio siqnals in 1894. In the...

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