File:00173 Apparecchio marconigrafico ricevente.jpg

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Italiano: Circuito elettrico in cui sono inseriti, In serie, un campanello e un "coherer". La resistenza elettrica del dispositivo è molto elevata, dell'ordine del milione di ohm, ma precipita bruscamente a pochi ohm in presenza di una perturbazione anche debole del campo elettrico presente nell'ambiente. In questo modo la corrente può percorrere il circuito e far funzionare il campanello. Le vibrazioni di quest'ultimo sono sufficienti a ripristinare l'alta resistenza della polvere metallica. L'apparecchio può dunque segnalare l'arrivo di perturbazioni di campo elettrico}Fonte: Liceo Scientifico Marconi
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Source Liceo Classico Annibal Caro di Fermo
Author Liceo Classico Annibal Caro di Fermo

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current10:55, 11 February 2022Thumbnail for version as of 10:55, 11 February 20225,184 × 3,456 (4.77 MB)Merzevale (talk | contribs)Uploaded a work by Liceo Classico Annibal Caro di Fermo from Liceo Classico Annibal Caro di Fermo with UploadWizard

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