That's my thought, too (and I assume it's what she's talking about when she's talking about measuring her ear after pressing it to a pillow for 20 minutes).
The alleged/supposed/hypothesized danger from cell phones isn't from heating, anyway; it's said to be something to do with microwaves, and sometimes specifically pulsed microwaves (digital phones emit their RF in a series of fairly short pulses). It doesn't seem absurd to me that there could be a mechanism for biological damage that's unlike heating, just like the damage due to gammas and other ionizing wavelengths is unlike heating. On the other hand, since nobody's come up with either a plausible proposed mechanism, or a convincing study showing that something is happening, I'm not too worried.
The earpiece warning makes perfect sense to me. If the earpiece happens to be resonant, it'll change the radiation pattern of the phone a lot, and could direct more RF into your head.
Th reason that microwaves and 802.11/bluetooth/zigbee/etc are on the same band is that the band was originally allocated for messy, high-power uses, mostly heating (the 'medical' in ISM's 'industrial, scientific, and medical' is presumably radio-diathermy). The spillover from those uses made the band pretty much useless for anything else. However, packetized digital radios came along, and they can deal with pulsed interference much better than analog radios can, and since it didn't require a license to put random low-power emitters on that band, a bunch of new technologies showed up to use it. (The alternative is to get an official band allocation for your new technology, which is difficult and expensive.)
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timeasmymeasure
no subject
Date: 2006-10-17 02:49 am (UTC)The alleged/supposed/hypothesized danger from cell phones isn't from heating, anyway; it's said to be something to do with microwaves, and sometimes specifically pulsed microwaves (digital phones emit their RF in a series of fairly short pulses). It doesn't seem absurd to me that there could be a mechanism for biological damage that's unlike heating, just like the damage due to gammas and other ionizing wavelengths is unlike heating. On the other hand, since nobody's come up with either a plausible proposed mechanism, or a convincing study showing that something is happening, I'm not too worried.
The earpiece warning makes perfect sense to me. If the earpiece happens to be resonant, it'll change the radiation pattern of the phone a lot, and could direct more RF into your head.
Th reason that microwaves and 802.11/bluetooth/zigbee/etc are on the same band is that the band was originally allocated for messy, high-power uses, mostly heating (the 'medical' in ISM's 'industrial, scientific, and medical' is presumably radio-diathermy). The spillover from those uses made the band pretty much useless for anything else. However, packetized digital radios came along, and they can deal with pulsed interference much better than analog radios can, and since it didn't require a license to put random low-power emitters on that band, a bunch of new technologies showed up to use it. (The alternative is to get an official band allocation for your new technology, which is difficult and expensive.)