<story><title>A radio frequency exposure test finds an iPhone 11 Pro exceeds the FCC&apos;s limit</title><url>https://spectrum.ieee.org/tech-talk/telecom/wireless/radio-frequency-exposure-test-iphone-11-pro-double-fcc-limits</url></story><parent_chain></parent_chain><comment><author>jws</author><text>&lt;i&gt;Testing phones from 5 millimeters away from the body may seem close, but for anyone carrying their phone in a pocket, the distance is closer to 2 millimeters. Because wireless power falls off exponentially with distance, what might be a safe amount of RF exposure at 5 millimeters could be much higher at 2 millimeters.&lt;/i&gt;&lt;p&gt;They mean to say that you should expect a power about 6 times higher, (5^2 &amp;#x2F; 2^2). This is rubbish.&lt;p&gt;The square of the distance model is for a pair of points. Phones in pockets at such closed distances are more closely modeled by a pair of infinite planes where the power falls off not at all. The real result will be in between, but very much closer to 1 than 6.</text></comment>
<story><title>A radio frequency exposure test finds an iPhone 11 Pro exceeds the FCC&apos;s limit</title><url>https://spectrum.ieee.org/tech-talk/telecom/wireless/radio-frequency-exposure-test-iphone-11-pro-double-fcc-limits</url></story><parent_chain></parent_chain><comment><author>zitterbewegung</author><text>This an advertisement for their RF phone cases. In the article the premise is refuted.</text></comment>