Subject: Re: X-Rays in the garage?
Organization: Majestic 12
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Date: Wed, 02 Oct 2002 18:33:18 GMT
On 2 Oct 2002 00:51:35 -0700, firstname.lastname@example.org (N. Thornton),
masquerading as a MSNBC reporter, said the following to White House
press secretary Ari Fleisher during a press conference concerning the
>That is what would happen to you, never mind the plants. Sure you
>don't want children?
>If you do produce interesting plants you might be famous, but you may
>well lose something more important than that, like health.
Well... I don't want fame really, just want to experiment with the
invisible world. As for kids, no, I do not want them as I have never
felt like I could be responsible enough especially in this modern
world of ours. Besides, when I was much younger I delighted in
vaporizing lead, mercury, aluminum, or really any substance I could
with a full page fresnel in the August sun. I'm probably already
sterile. Youth is dumb :-/
>Its quite easy to make a proper tube. Done any glass work before? You
>could pull the innards out of a big valve (vacuum tube), put the
>required metal disks in for A and K - your anode is ready there of
>course, maybe needing coating. Put a strip of magnesium across 2 of
>the pins, stick a glass tube on, vac pump it and heat the small tube
>to seal it off.
>Now put a zap of very high current thru the mg strip and youve got a
>Mg coated tube.
>I DONT recommend you do it, but you could.
>BTW a fridge compressor is a vacuum pump: but it is designed to only
>ever be operated horizontal. Tip it over and the oil comes out the
>exhaust tube, and no oil = failure. So a big flat sheet should stop it
>falling over. What degree of vacuum they give you is another matyter,
>but they're good enough for some vacuum needs at least, or for initial
>pumping where better vacuum is needed.
I don't have any glass working exp other than sealing off tubing ends
with a torch... I really don't know if I could manage my own tube
making, but I guess it's a thought...
>CRT screens are protected by thick (I think lead) glass, so not much
>good. VFDs maybe more useful, as running at 30v they dont need any
>xray protection. But to light up any screen needs many many times more
>radiation than using camera film. Film is the practical optoin really.
>Zinc sulphide works, but youd have to have it small and close, and
>that suggests viewing it from a distance of much less than the safe 3
>miles, so there r probs with that.
>I suppose you could de-vacuum a CRT, cut the face plate off and
>quickly coat the phosphor... varnish?? CRTs can explode, phosphors are
I have several CRTs in my stockpiles. I wouldn't be afraid to de-vac
one, as any time I dispose of one I consider it my duty to do just
that. I'm just wondering if it's even possible to rescue the phosphor
from the cruel elements fast enough. How long a period would I have to
coat it? I can just see myself with a hammer in one hand busting
glass away and spray enamel in the other hehe.
Here's a question... I once, long long ago, had a big 25" picture tube
from a black and white set. Strange thing about this one was that it
had a matching faceplate of 1/4" glass that came right off. I wonder
if it defeated some x-ray protection when removed, or if it was simply
to protect whomever from the hazards of implosion... Opinions?
Last question on the CRT issue... Could one make a haphazard sweep
generator just enough to make a quarter sized spot in the middle of
the screen, and then drive the sucker to holy hell and get a weak beam
of xrays? What might happen if you drove it so hard that it burnt a
hole in the phosphor... Would it still potentially emit radiation, or
does the burning destruction also extend to the screen mesh? If it
could be done, then it could maybe make a nice tight beam out the
front end, thus allowing said nutcase to aim it at said seeds and away
from said self. Possible?
>> It's all crazy, I know, but know that I do NOT intend to stand over
>> the final device while it runs. I merely plan to run it for the
>> purposes outlined above via a long extension cord.
Well... That depends on the power levels produced, if I understand
propogation correctly. If I am emitting x-rays, do they fall off in
potency the square of the distance, or am I mistaken? Shouldn't I be
able to create a beam effect using simple aiming techniques, and
failing that, shouldn't I just be able to operate the device in a lead
box? Surely I need not stand four miles away...?
>What struck me about those articles was the belief that 1/8 inch lead
>would stop gamma rays. That is nonsense - point your geiger counter at
>any nuke power plant, they're very radioactive indeed. Last time I
>pointed a geiger at a reactor it hit the end stop. So if you do this
>you _will_ be irradiated. And that may not turn out to be such fun. So
>don't try any of it.
Maybe I'll not do it... Maybe I will... I don't know yet. I do however
have a closing question or two for you:
Does this also mean that 1/8" of lead is not a sufficient sheild for
x-rays, and if so, then how can 1/2" of leaded glass be adequate in a
CRT? I don't mean this critically, I want to understand this better.
Thanks for your comments and critiques!!!