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Helping Hands Cafe Skitch Qui Gaslight Media Floods Country With Disinformation About a "Bloodbath" NBC Regime Media: Biden Is "Angry and Anxious" About His Failed Campaign for "Re" Election Shock Study: "Woke" People Are More Neurotic, Depressed, Miserable, and Mentally Ill Netanyahu to Chuck Schumer: Drop Dead Hezb'allah Terrorist Arrested at Southern Border; Admits He Entered US to Build a Bomb Inflation Rises "Much More" than Expected; Media Hails Joe Biden's Genius In Finally Curing Americans of Consumerism THE MORNING RANT - EV Death Pool Update: Rivian Puts Halt to Georgia Plant; Fisker Circling the Drain Absent Friends
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November 29, 2010
Biochemist Raises Questions about Nude-o-Scopes [rdbrewer]Jason Bell, a biochemist working in biophysics. Chromosome Damage From Radiation On the significance of the type of radiation used: The TSA has been stating that the X-rays used in the back scatter machines use 'soft' X-rays, which are defined as radiation between 0.12-12 keV (or kilo electron volts) and are generally stopped, or absorbed, by soft tissue or low density matter. 'Hard' X-rays are between 12-128 keV and are absorbed by dense matter like bone. According to the TSA safety documents, AIT uses an 50 keV source that emits a broad spectra (see adjacent graph from here). Essentially, this means that the X-ray source used in the Rapiscan system is the same as those used for mammograms and some dental X-rays, and uses BOTH 'soft' and 'hard' X-rays. Its very disturbing that the TSA has been misleading on this point. Here is the real catch: the softer the X-ray, the more its absorbed by the body, and the higher the biologically relevant dose! This means, that this radiation is potentially worse than an a higher energy medical chest X-ray. (Emphasis mine.) He has several concerns about the power of the machines in question:
On the widely publicized claim that radiation from the machines amounts to the same exposure one would receive after two to three minutes of flight: With respect to errors in the safety reports and/or misleading information about them, the statement that one scan is equivalent to 2-3 minutes of your flight is VERY misleading. Most cosmic radiation is composed of high energy particles that passes right through our body, the plane and even most of the earth itself without being absorbed or even detected. The spectrum that is dangerous is known as ionizing radiation and most of that is absorbed by the hull of the airplane. So relating non-absorbing cosmic radiation to tissue absorbing man-made radiation is simply misleading and wrong. Much more at the link, including questions raised by scientists about the lack of testing and safety data provided by the government and/or the manufacturers and the lack of independent testing and data. He also points out how stingy the release of information has been, with many things redacted in the material that has been made available. Why? Link via BoingBoing. | Recent Comments
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Monday Overnight Open Thread (3/18/24)
Helping Hands Cafe Skitch Qui Gaslight Media Floods Country With Disinformation About a "Bloodbath" NBC Regime Media: Biden Is "Angry and Anxious" About His Failed Campaign for "Re" Election Shock Study: "Woke" People Are More Neurotic, Depressed, Miserable, and Mentally Ill Netanyahu to Chuck Schumer: Drop Dead Hezb'allah Terrorist Arrested at Southern Border; Admits He Entered US to Build a Bomb Inflation Rises "Much More" than Expected; Media Hails Joe Biden's Genius In Finally Curing Americans of Consumerism THE MORNING RANT - EV Death Pool Update: Rivian Puts Halt to Georgia Plant; Fisker Circling the Drain Search
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