PubMed · 8441590
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S M Marcus, L Honcharuk, B Ruck, T Jennis, S Dennis. 1993. Button battery recommendations questioned.. https://pubmed.ncbi.nlm.nih.gov/8441590/
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Digital cellular telephones using the GSM (Global System for Mobile Communication) transmit information in bursts of microwaves. This pulsed transmitting mode causes the battery current and currents in the electronics of the apparatus to be pulsed. These pulsed currents produce corresponding pulsed magnetic fields near the phones. A study to determine the magnitude of these fields involved two models of digital telephones. The highest value of the magnetic flux density was 1.8 microT (rms).
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