Amos Emerson Dolbear (November 10, 1837 – February 23, 1910) was an American physicist and inventor. His patents interfered with Guglielmo Marconi's planned activities in the US. Dolbear researched electrical spark conversion into sound waves and electrical impulses. He was a professor at University of Kentucky in Lexington from 1868 till 1874. In 1874 he became the chair of the physics department at Tufts University in Medford, Massachusetts.

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  • Amos Emerson Dolbear (November 10, 1837 – February 23, 1910) was an American physicist and inventor. His patents interfered with Guglielmo Marconi's planned activities in the US. Dolbear researched electrical spark conversion into sound waves and electrical impulses. He was a professor at University of Kentucky in Lexington from 1868 till 1874. In 1874 he became the chair of the physics department at Tufts University in Medford, Massachusetts.
  • Docente universitario dal 1868 al 1874, è famoso per la "legge di Dolbear", citata per la prima volta nel suo articolo del 1897 The Cricket as a Thermometer. La formula mette in correlazione il canto dei grilli con la temperatura atmosferica, misurata in Fahrenheit, ed è la seguente: T = 50 + \left (\frac{N - 40}{4} \right) dove N indica il numero di strida al minuto. Un modo più semplice è quello di calcolare il numero di cinguettii ogni 15 secondi e sommare ad essi 40. Per avere il risultato in Celsius si può utilizzare la seguente formula: T_C = 10 + \left (\frac{N - 40}{7} \right)
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  • Amos Emerson Dolbear (November 10, 1837 – February 23, 1910) was an American physicist and inventor. His patents interfered with Guglielmo Marconi's planned activities in the US. Dolbear researched electrical spark conversion into sound waves and electrical impulses. He was a professor at University of Kentucky in Lexington from 1868 till 1874. In 1874 he became the chair of the physics department at Tufts University in Medford, Massachusetts.
  • Docente universitario dal 1868 al 1874, è famoso per la "legge di Dolbear", citata per la prima volta nel suo articolo del 1897 The Cricket as a Thermometer. La formula mette in correlazione il canto dei grilli con la temperatura atmosferica, misurata in Fahrenheit, ed è la seguente: T = 50 + \left (\frac{N - 40}{4} \right) dove N indica il numero di strida al minuto. Un modo più semplice è quello di calcolare il numero di cinguettii ogni 15 secondi e sommare ad essi 40.
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  • Amos Dolbear
  • Amos Dolbear
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