" I do remember
reading that the EHT rectifier diode valves and shunt stabiliser triodes in
early
colour TVs gave off enough Xrays to be dangerous"
This is true. I have here an old HV octal-base tube rectifier that came out
of a color set. The vacuum envelope itself is encased in a second outer
envelope, which seems to be made of something like 3/16" lead. The outer
envelope carries multiple warnings about x-ray emissions, and instructs you
to avoid arcing the anode to the case, or causing any other sort of
mechanical shock or damage as it may reduce the x-ray safety.
Of the countless thousands of tubes I've sorted, this is the only one I've
ever come across.
On Fri, Jul 1, 2016 at 3:40 PM, Toby Thain <t...@telegraphics.com.au> wrote:
> On 2016-07-01 4:08 PM, Fred Cisin wrote:
>
>> Not a very good comparison because one is pointed at your head for
>>> months or years and the latter is momentary.
>>>
>> On Fri, 1 Jul 2016, tony duell wrote:
>> I am not convinced that the effect is purely cumulative anyway. In other
>> words,
>> a lower intensity (and lower energy) beam for longer might not do as
>> much damage as a brief pulse from a high intensity, high energy source.
>>
>
>
> Granted. But this is all well studied, we can just look up the numbers and
> the science. Probably something people using unshielded CRTs are best
> motivated to do.
>
> --Toby
>
>
>
>
>
>> The "pro-nuclear" community calls it the "LNT" ("Linear No Threshold")
>> premise.
>>
>> How much of the health damage of early color TV was due, not to the
>> hardware, but to the quality of the content?
>> (USA networks were/are clearly worse than BBC)
>>
>>
>>
>>
>>
>
