Re: another reaction to the Pittsburg TMI "study"

[Ted de Castro <tdc@XRAYTED.COM>]

You can't get that much from a TV or CRT - except a projection CRT.



These devices haven't put out significant x-rays since they went to

solid state high voltage power supplies many many years ago.



As for x-rays from the face ... the materials the beam can strike does

not have a high cross section for x-ray production and the thickness of

the glass required to stand the forces of the vacuum is more than enough

shielding.



It just doesn't happen!



This was one of those bad cases to use a film badge - in this energy

region it over responds.



Bjorn Cedervall wrote:

> 

> My friend "Steve" (professor and physicist - not on Radsafers) - sent me the

> question below. Please help Steve with relevant information:

> smecca@providence.edu

> 

> Thanks in advance,

> 

> Bjorn Cedervall   bcradsafers@hotmail.com

> -----------------------------------------

> I have a question you might be able to help me with. Do you have any

> information as to risks of somatic or genetic effects of X-Rays from TV or

> Computer monitors. The breaking radiation from the face of a monitor will

> have maximum energy X-Rays in the 20-25 KeV region. An old friend of mine,

> with whom I've lost contact, some years ago put an X-Ray film on a monitor

> screen and determined that in order to get 100 mR per week (the allowable

> limit) one would have to wrap oneself around the monitor and be in contact

> with it. Nevertheless, I have this sense that, with the low prices of LCD

> screens, it might be worthwhile for schools such as ours to consider orderly

> replacements of the older tube monitors. Any thoughts, references or wisdom

> on this?

> 

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