>>> On Mar 1, 2021, at 1:40 AM, 3gg <[email protected]> wrote: >>> In your last statement, are you saying the health risk is acceptable >>> because you get to at least use your phone?
>> No. This isn’t about acceptable or not acceptable. That’s subjective, and
>> different for different people.
>> This is just about “more” or “less.”
> That makes sense, thank you. What isn't yet very clear to me is the absolute
> scale of things. Where on that radiation scale would a deployment of 5g lie
> at, what magnitudes are considered harmful by recent research, and who backed
> that research?
Again, this is physics, so as you add confounding variables the complexity and
range of possible answers mushrooms exponentially.
Think of it like global warming… The question “do we want more warming or less
warming” has a clear answer, but when you start asking “how much is ok?” “how
quickly?” “what are the tradeoffs?” the answers begin to multiply and become
harder to pin down. That in no way negates the basic principle that less is
better.
It’s the same with RF energy. We can pretty safely agree that less is better.
The absolute scale is complicated because it’s different for every point in
space, for every time, and at every frequency. So, even if you manage to
specify an exact point in space and an exact moment in time, you’re still
looking at a, well, spectrum of answers, all valid, for different frequencies.
And many people would agree that frequencies outside of a critical range
probably don’t have very much effect on people… At the high end they bounce off
your surface relatively harmlessly (the outside layer of your skin was dead
anyway) and at the low end, they pass through without hitting anything (we’re
all mostly empty space anyway). But what those high and low thresholds are
would be a matter of fierce debate.
Most cell phones have a maximum transmission wattage of 1W, and average around
600mW (0.6W).
By comparison, most microwave ovens go up to 1000W. But microwave ovens try to
contain that energy. Specifically, in the US, 21 CFR 1030.10 limits that: "The
equivalent plane-wave power density existing in the proximity of the external
oven surface shall not exceed 1 milliwatt per square centimeter at any point 5
centimeters or more from the external surface of the oven, measured prior to
acquisition by a purchaser, and, thereafter, 5 milliwatts per square centimeter
at any such point.” So, microwave ovens are 1/100th as dangerous as cell
phones if they’re in good repair, and 1,000 times worse if they’re in bad
repair.
So, basically:
1) Answers as concrete and simple as you’re looking for don’t exist, there are
too many variables.
2) “What’s harmful” in any absolute sense is, likewise, too subjective to be
meaningful.
3) Any cell phone that you’re carrying in your pocket or holding up to the side
of your head is likely to be, for most people most of the time, the strongest
source of RF energy in their lives. Unless they work in broadcasting or some
kinds of manufacturing or have a leaky microwave oven.
4) One of the biggest positive difference most people can make in reducing the
amount of RF energy they're absorbing is to change the way they use their
phone: not have their phone as near them as much of the time, have it switch to
WiFi whenever possible, switch to a 5g handset when it becomes practical, use
speakerphone when they’re alone, and a headset when they’re not.
-Bill
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