Sorry to interrupt the discussion on bullies, but replying on the x-ray comments from yesterday:
Quote:
Originally Posted by bocastephen
(Post 9510928)
Again, while I appreciate all the scientific explanations, no one is yet able to confirm that these machines emit waves at the frequency and power advertised - that in fact they are as safe as the government claims.
Why? Because all of the information the public has on these machines has been released by the government and its test lab - none of these machines (to my knowledge) have been released to a full independent lab, acting in the public interest, to verify the authenticity of the claims, audit the machine's output and analyze the real effect on bare skin.
Your theories on millimeter wave might be accurate, but it does not mean that THIS machine actually complies with what you posit about the technology itself. The power output claimed by the government might be a fraction of the real output this machine is capable of producing.
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I share your distrust of gov't in general and TSA in particular, and I'm not (again) defending the way these scanners may be used.
Companies and universities globally have published results on mm-wave scanners, including passive imagers (using just naturally-occuring energy). Producing transmitter power at these frequencies is really hard (= expensive). Above a certain level, it just becomes physically impossible. Why would anyone lie about the power levels when it's possible to get a good image at a low power? It’s like using a searchlight instead of a flashbulb to take a picture.
It could all be a conspiracy to persuade you that it’s low levels of mm-wave when it’s high levels of x-rays. But to me, at least, it seems unlikely:
Melbourne airport
has just installed a mm-wave scanner . Could it really be an x-ray? I guess so. But unless mm-wave scanners are fictional, why would they lie about it? And this is Australia; down here we haven’t bought into the whole shoes and liquid lunacy for domestic travel.
One of the leading companies in this area is
Qinetiq in the UK. Sure they’re sponsored by the UK gov’t and their product page implies liquids are a threat.:rolleyes: Sure they can make a fortune selling this stuff. This kind of development is expensive; who else is going to pay for it? But they seem to have gone to a lot of trouble over a non-existent technology. Here’s
another UK based company. Here’s a
patent for a passive mm-wave imager.
Under IEEE publications (subscription required) I found scientific papers from Canada, Spain, Japan, the Ukraine… Papers published in the scientific literature have to be peer-reviewed by other scientists. If it’s a conspiracy by the TSA, then it involves several governments, many research labs and the international research community – I just don’t believe that TSA is competent enough to pull that off.
As to testing by an independent lab, this is a very specialised (=expensive) area of R&D. Anyone who’s invested in equipment to measure power levels at that frequency is likely to have a link to someone who’s linked to someone who’s associated with some government. You can read the
2007 report by the
National Materials Advisory Board who are supposed to be “the pre-eminent source of independent materials assessments for the nation.” but you may find that having some ex-government employees on the committee isn’t independent enough for you. Their conclusion 5 is “Millimeter-wavelength/terahertz technology and x-rays provide images of similar quality. However, millimeter-wavelength/terahertz energy has the safety benefit of being non-ionizing radiation, while x-rays are ionizing radiation. …”
Look, I think they're lying about liquids. And shoes. And probably about what they'll do with the images from these scanners. But I don’t think they could maintain a conspiracy to create a fictional technology or have any reason to lie about the power levels and associated risks of a real one.