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Alcatel-Lucent / Bell System / Invention of the telephone / Tin can telephone / Telephone / Alexander Graham Bell / Microphone / Antonio Meucci / Bell Labs / Telephony / Technology / Electronic engineering


String Telephone Activity Goal To explain the basic science behind sound waves and show how early telephones worked. NGSS Domain(s) PS4.A Wave Properties PS4.C Information Technologies and Instrumentation
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Document Date: 2014-11-10 16:02:05

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