[pp.int.general] Flashmob against full body scanners

[Alexander Bock]

Am 11.01.2010 um 14:49 schrieb <bakel362 at planet.nl> <bakel362 at planet.nl>:
> 
> Does anyone know whether these scanners use X-ray (R"ontgen)? If they do, they are a health risk, however low the dose is. X-rays are high energy radiation (for thoese not familiar in quantum physics: this is not a matter of the amout of energy in watts: it is entirely determined by the frequency of the radiation - based on Plancks formula). The actual percentage of people contracting cancer because of these scans may be low, but a high number of people multiplied by a low percentrage still is a substantial number of people. A cynical calculation would be to compare that number to the number of potential terrorist attack victims. I guess the latter i lower. But rather I would say: any checking method affecting health is *wrong*. Affecting privacy is bad enough.

They are using Terahertz radiation. Very low energy, non-ionizing, somewhere between infrared and microwave. See for example http://en.wikipedia.org/wiki/Terahertz_radiation

Alex
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