Quirky Science
aktuálne záležitosti, politika, E4, S1606200030, 2015
Beschreibung
E04 A man with an ear for music, one of the first to try teaching the deaf how to speak, thought he could build a "harmonic telegraph". He had this idea that several notes could travel through a wire simultaneously, instead of the one Morse code that the telegraph could transmit. He thought this to be possible because he misinterpreted the writings of a researcher writing in German - a language he did not know. - And would later describe his misinterpretation as a "very valuable blunder". The man was Alexander Graham Bell and he invented telephony. The big question is: what happens in that wire? How can voices travel? Bell and his assistant eventually proved that different tones would vary the strength of an electric current in a wire. In fact, it's the vibrations of the voice that determine the strength of the current. His invention caused a lot of fuss - yet it took years before people comprehended the scale of it: before the widespread use of the phone - whom were you going...
TV Zäitplang
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Samschdeg, 00:30 | Quirky Science |
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Samschdeg, 18:25 | Quirky Science |
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Samschdeg, 18:55 | Quirky Science |
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Sonndeg, 18:25 | Quirky Science |
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Sonndeg, 18:55 | Quirky Science |
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Dënschdeg, 00:30 | Quirky Science |