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03-06-2015, 14:36 door Anoniem

Full-body scanners: we reveal all http://www.newscientist.com/article/dn19746-fullbody-scanners-we-reveal-all.html Are there health concerns surrounding millimetre-wave scanners? In theory, these ought to be safer than X-rays because millimetre photons do not have enough energy to break chemical bonds. Last year, however, researchers at Los Alamos National Laboratory in New Mexico suggested that these low energy photons could damage DNA in an entirely novel way. They say that while these photons cannot break DNA, they can shake it. This shaking may be so strong that it unzips the two strands in DNA, interfering with the genetic machinery that keeps cells working and healthy. The team at Los Alamos did their calculations for submillimetre or terahertz waves, whose photons are slightly more energetic than those of millimetre waves. Their results are probabilistic rather than deterministic, they say. This explains why some experiments show that terahertz waves can damage DNA while other, practically ...

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