Source google image: https://www.researchgate.net/profile/Rizwan_Khan54/publication/308522619/figure/fig3/AS:415453911502850@1476063339401/Electric-field-effect-in-the-radiator-a-without-air-gap-b-with-air-gap-c-with.png
Schema electrique dl radiators
Source google image: https://www.researchgate.net/profile/Rizwan_Khan54/publication/308522619/figure/fig3/AS:415453911502850@1476063339401/Electric-field-effect-in-the-radiator-a-without-air-gap-b-with-air-gap-c-with.png