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A Daily Digest of IT Blogs from Richi Jennings

Wi-Fi causes child cancer? (and fair-y tale use)

Won't somebody think of the children? It's Monday's IT Blogwatch: in which Aunty Beeb scares us all over Wi-Fi "radiation". Not to mention a Disney parody explanation of copyright law and fair use...

BBC TV's Panorama series speaks of, "a Wi-Fi revolution...":

...with offices, homes and classrooms going wireless - but there is concern the technology could carry health risks. The Government insists Wi-Fi is safe, but a Panorama investigation shows that radio frequency radiation levels in some schools are up to three times the level found in the main beam of intensity from mobile phone masts. There have been no studies on the health effects of Wi-Fi equipment, but thousands on mobile phones and masts.

The radiation Wi-Fi emits is similar to that from mobile phone masts. It is an unavoidable by-product of going wireless ... In 2000, Sir William Stewart ... headed the government's inquiry into the safety of mobile phone masts and health. He felt the scientific research was sufficient to apply a precautionary approach when siting masts near schools ... But what about Wi-Fi? The technology is similar to mobile phone masts and in use in 70 per cent of secondary schools and 50 per cent of primary schools.
...
Readings ... showed the ... signal strength to be three times higher in the school classroom using Wi-Fi than [that of] a mobile phone mast. The findings are particularly significant because children's skulls are thinner and still forming and tests have shown they absorb more radiation than adults.

Sepp Hasslberger looks worried:

If you put a frog in boiling water, it will jump out. However, if you put a frog in cold water and gradually heat the water, you can cook the frog because the frog's body will adjust to the slight changes in temperature and it will not notice it is being cooked. Well, the same thing might be happening to an unsuspecting public - a public that has not been informed about the real dangers of microwave radiation from cell phones, WiFi and other high-frequency-radiation emitting devices and antennas. The truth of the matter, your cell phone and your WiFi might very well indeed be making you and those around you sick!
...
The increasing popularity of wi-fi comes on the heels of the explosive growth in wireless mobile telephones, and amid heightened concerns over the health hazards of saturating levels of electromagnetic radiation. Microwaves at current exposure levels are linked to brain damage, DNA damage, brain tumours, cancers, microwave sickness, impairment of cognitive functions, impairment of reproduction and fertility, affecting humans, rodents, birds, and bees.

Martin Sharp adds:

Below are a long list of people who can not enjoy [Wi-Fi] ... because it makes them ill ... John Fox (Teacher) , Robert Thinker (Home Owner) , Michael Bevington (Teacher) , Tony (Resident in flat) , Kate Figes (Author) , Ryan Warne (Furniture Worker) , Poppy Rhodes (Journalist) , David Dean (Councillor, London) , Sarah Dacre (former TV Executive) , Brian Stein (Chief Executive)
...
Additionally, I personally know of several other examples where people have been made ill by the presence of Wi-fi and have recovered afterwards ... None of these symptoms occurred before Wi-fi was installed, and all are commonly associated with findings from research into other comparable forms of microwave radiation.

But Bill Thompson scoffs:

It’s depressing to see this sort of scaremongering, especially as I’ve just heard Radio 4’s Today say that wifi networks ‘can give out more radiation than mobile phone masts’ with no context. As I’ve already pointed out, there’s no evidence of problems, there’s no mechanism that would lead us to think there are going to be problems, and apart from claims from people who say that they are magically sensitive to wifi - and yet seem not to notice TV or radio signals coursing through their bodies - there is no reason to limit the use of wifi.

But of course it’s a new technology that can’t be proven to be safe, largely because nothing can be proven to be safe, and appeals to the sort of scientifically illiterate campaigners and journalists who like attention and ratings.

Glenn Fleishman, too:

The measurement of Wi-Fi signal strength and a cell base station signal are made at different points. The measurement for Wi-Fi is at 1 meter, and the cell base station at 100m. At those disparate differences, Wi-Fi comes out three times stronger ... [But] the point isn’t a cell base station radiating to a user, but the cell phone someone carries produces a signal that reaches the base station. No measurement appears to have been taken of a cell phone in use.

Lest we forget, the Guardian writes, “The Health Protection Agency says a person sitting within a Wi-Fi hotspot for a year receives the same dose of radio waves as a person using a mobile phone for 20 minutes.”

Scientists quoted in the program apparently say that using thermal effects—heat produced by exposure to electromagnetic radiation—to determine risk isn’t enough to, well, determine risk.

Alan Argoed agrees:

Keeping in mind I haven’t watched it yet, am not a scientist and know very little about what happens when 802.11 networks get busy… legal WiFi kit operates at very low power outputs (0.1 watt) compared to the average mobile phone handset (of nearer 2 watts), I'm personally more worried about risks from a saturated mobile network than a busy WiFi cloud.

Anyway, if you’ve got more exciting things to do on Monday evening, an on demand webcast will be available to watch on the Beeb’s website.

Daniel Davies sums up his thoughts:

From the "makes you weep" department

Last week on Panorama: We fearlessly expose the pseudoscientific loons of Scientology.

Next week on Panorama: Are WiFi signals giving your children cancer?

It's the journalistic equivalent of "please don't put your life in the hands of a rock'n'roll band, they'll throw it all away".

Buffer overflow:

Around the Net

Around Computerworld

Previously in IT Blogwatch

And finally... YouTube - A Fair(y) Use Tale [hat tip: Michael Geist]

Richi Jennings is an independent technology and marketing consultant, specializing in email, blogging, Linux, and computer security. A 20 year, cross-functional IT veteran, he is also an analyst at Ferris Research. Contact Richi at blogwatch@richi.co.uk.

What People Are Saying

Hi I've also studies physics

Hi
I've also studies physics to degree level and am aware that although I undersand what microwave radiation is, I do not know how it interacts with the body.
I also know that the background levels of microwave radiaiton left over from the Big Bang, are virtually zero and are certainly trillions of times lower than the levels emitted by wifi transmitters.
I wonder why we assume this would have no effect?
Is it that we have developed mechanisms to cope with the naturally occurring levels of radiation in all frequecncies but if we are exposed to something suddenly much higher, we do not have the repair mechanisms to cope?
We should not be so blinded by technology that we cannot look honestly at these questions. It is the biologists who probably will find the answers.
There is a lot of research out there is anyone really wants to take a look, but who really does?

I've studied physics all my

I've studied physics all my life and, forgive me if I'm wrong, but microwave/radio em radiation is not particularly likely to cause any damage. These waves have a longer wavelength and carry less energy than visible light.

Nobody complains about being constantly bathed in visible light. No, people complain about being bathed in ultraviolet light, which carries greater energy than visible light and is therefore ionising radiation, and may cause cancers. If we go even more energetic, to X-rays and gamma rays, the effects are even more profound.

People panic because they know that microwave radiation is efficient at heating water (this is how a microwave oven works; microwaves have a similar wavelength to a vibration mode of water). This is way different to ionisation, and unless anyone's reported their head being sizzled, they shouldn't be worried.

I watched the demo on

I watched the demo on Breakfast TV this morning. Some guy with a spectrum analyser and detector showing the "WiFi" emissions. WiFi operates at 2.4GHz continuously which would show as a single peak at the transmission frequency. What he was showing on the analyser was typical broad spectrum emissions from a PC when normal disc activity was occurring. If you are going to show a demo at least get it right.