Distance between exposed object and exposure source
1.5 cm
Setup
The mobile phone was attached to a non-metallic helmet, so that it rested against the subject's left ear with the antenna 1.5 ± 0.5 cm from the head. To prevent subjects from detecting the testing condition by sound or heat, the speaker was removed and the mobile phone was covered with soundproofing material, and a 5 mm thick piece of foam was placed between the phone and the subject's head.
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