gives a zero electric field within a uniformly surface charged sphere. This zero field result is true for any dosed conducting body of .arbitrary shape charged on its surface with no enclosed. charge. Extremely precise measurements were made inside such conducting surface charged bodies and the electric field was always found to be zero. Such a closed. conducting body is used for shielding so [hat a zero field environment can be isolated and is often called a Faraday cage. after Faraday's measurements of actually climbing into a dosed hollow conducting body charged on its surface to verify the zero field results.