Gauss (unità di misura)

Disambiguazione – "Gauss" rimanda qui. Se stai cercando altri significati, vedi Gauss (disambigua).

Il gauss (simbolo G) è l'unità di misura del campo magnetico, indicato anche come "densità di flusso magnetico" o "campo di induzione magnetica". Un gauss, facente parte del sistema CGS elettromagnetico, è pari ad 1 maxwell per centimetro quadrato. Il sistema CGS è stato formalmente soppiantato dal sistema internazionale di unità di misura (S.I.), che utilizza il tesla T come unità di misura del campo magnetico. Un gauss è pari a 1×10−4 T (e quindi 1 T = 1×104 G).

In base al sistema di unità gaussiano (CGS), il gauss è l'equivalente di un esu/cm2, mentre l'oersted è l'unità di misura del campo magnetizzante. Nel S.I. invece l'unità di misura di quest'ultimo è l'ampere su metro A/m.

Il gauss è un'unità dell'ordine di grandezza del campo magnetico terrestre: il campo magnetico terrestre varia infatti a seconda dei luoghi da 0,2 G a 0,7 G.[1]

L'unità di misura prende il nome dal matematico e fisico Carl Friedrich Gauss.

Note

  1. ^ Adriano Azzarone, Elementi del campo magnetico, su roma2.rm.ingv.it. URL consultato il 25 ottobre 2020 (archiviato dall'url originale il 5 settembre 2019).

Bibliografia

  • Paolo Mazzoldi, Massimo Nigro, Cesare Voci, Fisica (Volume II), EdiSES Editore, 2001, ISBN 88-7959-152-5.

Voci correlate

Collegamenti esterni

  Portale Metrologia: accedi alle voci di Wikipedia che trattano di metrologia

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