marxilaisuus Suuressa mittakaavassa Vohveli first radio invented tuulisia Rekvisiitta Ole hyvä
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Transmitter of Guglielmo Marconi with which he made his first radio experiments. The wire winding on the wooden frame is the coil, the glass bottle, a so-called "Leyden Jar" the capacitor Stock
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History of radio - Wikipedia
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The history of radio
The radio invention. - ppt video online download
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