EditorialDavid Edward Hughes (1831 ?A_i_ 1900). Was a Welsh-American scientist and musician. Co-inventor of the microphone and teleprinter, inventor of the spark-gap transmitter and inventor of the crystal radio. Engraving by A. Carretero. The Spanish and Ameri...
EditorialDavid Edward Hughes (1831 ? 1900). Was a Welsh-American scientist and musician. Co-inventor of the microphone and teleprinter, inventor of the spark-gap transmitter and inventor of the crystal radio. Engraving by A. Carretero. The Spanish and American ...
Editorial0270001516 Marconi's first tuned transmitter, 1897. Guglielmo Marconi, an Italian physicist and inventor, sent the first radio signals across the Atlantic using this experimental tuned transmitter. He later developed short-wave radio equipment, and est...