[neonixie-l] Speaking of Neon

[Terry S]

I'm looking for this neon sign, will pay a more than fair price. Please 
ignore the horizontal white lights in the pic -- they are inside the 
building behind the sign.

Terry


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Re: [neonixie-l] IN1 tubes with no bases...

[Terry S]

Possibly, but as inexpensive as they are -- stock up a whole slew of spares.

On Friday, March 16, 2018 at 6:02:33 PM UTC-5, Terry Kennedy wrote:
>
> On Friday, March 16, 2018 at 3:31:37 PM UTC-4, Terry S wrote:
>>
>> I wonder if soaking the base might free up the cement. In water or a mild 
>> solvent... Shouldn't hurt the wire entry into the envelope, and maybe one 
>> could keep that dry using careful positioning.
>>
>> Funny how the ugly duckling/sad stepchild tube becomes a little prettier 
>> without her brown dress.
>>
>
> But still, as a non-mercury-containing tube, the lifespan isn't very long, 
> correct? 
>

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Re: [neonixie-l] IN1 tubes with no bases...

[Terry Kennedy]

On Friday, March 16, 2018 at 3:31:37 PM UTC-4, Terry S wrote:
>
> I wonder if soaking the base might free up the cement. In water or a mild 
> solvent... Shouldn't hurt the wire entry into the envelope, and maybe one 
> could keep that dry using careful positioning.
>
> Funny how the ugly duckling/sad stepchild tube becomes a little prettier 
> without her brown dress.
>

But still, as a non-mercury-containing tube, the lifespan isn't very long, 
correct? 

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[neonixie-l] Re: visualizing the radiation from Radioactive clock

[Paul Andrews]

How's the eye?

On Friday, March 16, 2018 at 4:18:58 PM UTC-4, philthepill wrote:
>
> When I was a teen-ager in the 1960's I bought a radiation experimenters 
> kit which had a small device which looked like a watch-makers eyepiece 
> except it had a screen in the front which fluoresced under radiation. It 
> was called a spinarthroscope.  The kit included a small piece of uranium 
> ore.  In a dark room, you put the device on your eye and held the uranium 
> up to the screen and could see green flashes caused by the radiation 
> interacting with the screen at the front.  
>
> -- Original Message -- 
> From: HuggerMugger  
> Date: March 16, 2018 at 4:01 PM 
>
> I saw what the radium did to people in a documentary about the period of 
> elements: 
> https://en.wikipedia.org/wiki/Radium_jaw 
> Radium is closely related to Calcium and hence the body absorbs radium and 
> stores it where radium use to be stored – in the skeleton. and most often 
> in the jaw bones. 
>   
> /Magnus 
>   
> *From:* gregebert 
> *Sent:* Friday, March 16, 2018 6:11 PM 
> *To:* neonixie-l  
> *Subject:* [neonixie-l] Re: OT: Radioactive clock 
>   
> And just because it no longer glows, does NOT mean it's no longer 
> radioactive. Radium half-lifes in 1600 years; the 'glow agents' deplete 
> after a few years. 
>   
> I dont know how dangerous these items are, though. Radium undergoes alpha 
> particle decay, and those particles are easily stopped. Even a paper bag 
> will block alpha particles. But if you were to ingest an alpha-particle 
> emitter, that will be bad. 
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[neonixie-l] Re: visualizing the radiation from Radioactive clock

[Terry S]

Guessing you might not get that thru airport security now days.


On Friday, March 16, 2018 at 3:18:58 PM UTC-5, philthepill wrote:
>
> When I was a teen-ager in the 1960's I bought a radiation experimenters 
> kit which had a small device which looked like a watch-makers eyepiece 
> except it had a screen in the front which fluoresced under radiation. It 
> was called a spinarthroscope.  The kit included a small piece of uranium 
> ore.  In a dark room, you put the device on your eye and held the uranium 
> up to the screen and could see green flashes caused by the radiation 
> interacting with the screen at the front.  
>
> -- Original Message -- 
> From: HuggerMugger > 
> Date: March 16, 2018 at 4:01 PM 
>
> I saw what the radium did to people in a documentary about the period of 
> elements: 
> https://en.wikipedia.org/wiki/Radium_jaw 
> Radium is closely related to Calcium and hence the body absorbs radium and 
> stores it where radium use to be stored – in the skeleton. and most often 
> in the jaw bones. 
>   
> /Magnus 
>   
> *From:* gregebert  
> *Sent:* Friday, March 16, 2018 6:11 PM 
> *To:* neonixie-l  
> *Subject:* [neonixie-l] Re: OT: Radioactive clock 
>   
> And just because it no longer glows, does NOT mean it's no longer 
> radioactive. Radium half-lifes in 1600 years; the 'glow agents' deplete 
> after a few years. 
>   
> I dont know how dangerous these items are, though. Radium undergoes alpha 
> particle decay, and those particles are easily stopped. Even a paper bag 
> will block alpha particles. But if you were to ingest an alpha-particle 
> emitter, that will be bad. 
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[neonixie-l] visualizing the radiation from Radioactive clock

[alb.001 alb.001]

 
  When I was a teen-ager in the 1960's I bought a radiation experimenters kit which had a small device which looked like a watch-makers eyepiece except it had a screen in the front which fluoresced under radiation. It was called a spinarthroscope.  The kit included a small piece of uranium ore.  In a dark room, you put the device on your eye and held the uranium up to the screen and could see green flashes caused by the radiation interacting with the screen at the front.  
  
   -- Original Message --
   From: HuggerMugger 
   Date: March 16, 2018 at 4:01 PM
   
   
   

 
  I saw what the radium did to people in a documentary about the period of elements:
 
 
  https://en.wikipedia.org/wiki/Radium_jaw
 
 
  Radium is closely related to Calcium and hence the body absorbs radium and stores it where radium use to be stored – in the skeleton. and most often in the jaw bones.
 
 
   
 
 
  /Magnus
 
 
  
   
 
   
   

 From: 
 gregebert


 Sent: Friday, March 16, 2018 6:11 PM


 To: 
 neonixie-l


 Subject: [neonixie-l] Re: OT: Radioactive clock

   
  
  
    
  
 
 
  
   And just because it no longer glows, does NOT mean it's no longer radioactive. Radium half-lifes in 1600 years; the 'glow agents' deplete after a few years.
   
 
   
   
I dont know how dangerous these items are, though. Radium undergoes alpha particle decay, and those particles are easily stopped. Even a paper bag will block alpha particles. But if you were to ingest an alpha-particle emitter, that will be bad.
   
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   Virusfritt. www.avast.com
  
 

   
  
   
  
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[neonixie-l] Radioactive clock

[alb.001 alb.001]

 
  Many of the workers who painted the watch hands etc died of radiation poisoning in the early 20th century.  Marie Curie who discovered radium also died of radiation poisoning.
  
   -- Original Message --
   From: "SWISSNIXIE - Jonathan F." 
   Date: March 16, 2018 at 1:12 PM
   
   
   
Nice to see other people with interest in radiation :)

The clocks are probably radioactive because of their paint on the watch hands. In the 1930's they used radium paint to make night glowing watch hands. Radium contains radioactive isotopes (Ra-226)

Before people got silly about radiation, radioactive material was used for quite a few consumer products like watch hands, vacuum tubes, uranium glass pottery, lantern mantles. Running around with a scintillation counter (more sensible geiger counter) on a vintage flew marked will usually bring up some items :) 



   
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[neonixie-l] B5991 sockets

[Jonathan Peakall]

I am starting on my fantasy ham radio transceiver project and of course 
it will use nixie tubes for the frequency display, B5991's. It will also 
have a neon bar graph for an S-meter. I am looking for 7 or 8 sockets, I 
have plenty of tubes. I'll pay cash or maybe trade some tubes for them. 
Panel mount type would be best but I might consider PCB mount. I also 
have some HP equipment style sockets that I would trade, they are too 
large to easily fit in my enclosure.


The radio will be built around a uBITX. It should be delivered this week 
so it is time to get working on the display.


You can reach me off list at : jpeakall AT madlabs DOT info. Thanks!

Jonathan

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Re: [neonixie-l] Re: OT: Radioactive clock

[HuggerMugger]

I saw what the radium did to people in a documentary about the period of 
elements:
https://en.wikipedia.org/wiki/Radium_jaw
Radium is closely related to Calcium and hence the body absorbs radium and 
stores it where radium use to be stored – in the skeleton. and most often in 
the jaw bones.

/Magnus

From: gregebert 
Sent: Friday, March 16, 2018 6:11 PM
To: neonixie-l 
Subject: [neonixie-l] Re: OT: Radioactive clock

And just because it no longer glows, does NOT mean it's no longer radioactive. 
Radium half-lifes in 1600 years; the 'glow agents' deplete after a few years. 

I dont know how dangerous these items are, though. Radium undergoes alpha 
particle decay, and those particles are easily stopped. Even a paper bag will 
block alpha particles. But if you were to ingest an alpha-particle emitter, 
that will be bad.
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---
Detta e-postmeddelande har sökts igenom efter virus med antivirusprogram från 
Avast.
https://www.avast.com/antivirus

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Re: [neonixie-l] IN1 tubes with no bases...

[Terry S]

I wonder if soaking the base might free up the cement. In water or a mild 
solvent... Shouldn't hurt the wire entry into the envelope, and maybe one 
could keep that dry using careful positioning.

Funny how the ugly duckling/sad stepchild tube becomes a little prettier 
without her brown dress.

Terry

On Wednesday, March 14, 2018 at 2:53:20 PM UTC-5, gregebert wrote:
>
> It's quite a bit of work to pop IN-1's apart. There's a crusty adhesive in 
> the base, and heating / sawing / grinding the base gives off some really 
> obnoxious (and probably toxic) fumes. Smells like bakelite to me.
>
> If any of you are pulling these apart to save money on sockets, please 
> consider your personal health and make your own sockets. I've had excellent 
> results with 0.093" female socket pins for IN-1's and A101's, and you can 
> easily make a 3D-printed-base to hold the assembly.
>

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[neonixie-l] Re: OT: Radioactive clock

[Terry Kennedy]

On Friday, March 16, 2018 at 9:48:20 AM UTC-4, Paul Andrews wrote:
>
> I thought you all might find this amusing. I while back there was a thread 
> about tubes with radon in them. That set me off on a little side-quest 
> where I ended building a Geiger counter using an old Russian Geiger-mueller 
> tube. It has never detected anything but background levels. 
>
> I also buy other vintage stuff, and my wife just asked me to check one of 
> them for radioactivity, because she said “it looks like it glows”. It had 
> never occurred to me. Anyhow, here is the result: 
>
> https://youtu.be/PMrHIyntT4s


For a while I was buying up Elektronika clocks from the ex-Soviet 
Union. When I received them, I'd replace the VFD tubes and otherwise 
freshen them up. One of them was full of the nastiest, grittiest dust 
imaginable. When I asked the seller what was up, and where it came 
from, they replied "a disused industrial premises approx. 100km NNW of 
Kiev". AKA Chernobyl. 

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Re: [neonixie-l] Re: OT: Radioactive clock

[Paolo Cravero]

>
> Yes, none of them glow in the dark any more. Is there something I could
> get that would light up under the bombardment? Like some glow-in-the-dark
> paint? It would be fun to mess with this a little.
>

You could try with UV light, even the UV LED from a cheap "magic ink" toy
pen could do. I've tried on a "self-luminous via" and the green element
glows more, then there is a slow decay effect when the exciter light is
removed (but that could be persistence of vision in the eye).

Not everything that glows green under UV-light is radioactive, but I think
the other way around holds true.

Paolo

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[neonixie-l] Re: OT: Radioactive clock

[Paul Andrews]

At 1 foot from the dial, the count drops to 500CPM - a 10-fold decrease but 
that still seems quite large to me. BTW, it looks like this was painted all 
over the dial on this clock. I have another variation of this clock that 
only has it on the hands. CPM is the same though. I also checked a 
radio/alarm clock from about 1960. It too is radioactive, but an order of 
magnitude less - or maybe the plastic covering that clock is stopping more 
of the particle.

Yes, none of them glow in the dark any more. Is there something I could get 
that would light up under the bombardment? Like some glow-in-the-dark 
paint? It would be fun to mess with this a little.


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[neonixie-l] Re: OT: Radioactive clock

[SWISSNIXIE - Jonathan F.]

Nice to see other people with interest in radiation :)

The clocks are probably radioactive because of their paint on the watch 
hands. In the 1930's they used radium paint to make night glowing watch 
hands. Radium contains radioactive isotopes (Ra-226)

Before people got silly about radiation, radioactive material was used for 
quite a few consumer products like watch hands, vacuum tubes, uranium glass 
pottery, lantern mantles.  Running around with a scintillation counter 
(more sensible geiger counter) on a vintage flew marked will usually bring 
up some items :) 


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[neonixie-l] Re: OT: Radioactive clock

[gregebert]

And just because it no longer glows, does NOT mean it's no longer 
radioactive. Radium half-lifes in 1600 years; the 'glow agents' deplete 
after a few years.

I dont know how dangerous these items are, though. Radium undergoes alpha 
particle decay, and those particles are easily stopped. Even a paper bag 
will block alpha particles. But if you were to ingest an alpha-particle 
emitter, that will be bad.

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[neonixie-l] Re: Digi-Vista Nixie Clock From 1970

[Terry S]

I take that back!!! I slowed down the video to 1/4 speed -- and the last 
two digits are counting 00->39,50->59,40->49 . That next-to-last tube 
is mis-wired somehow or the counter is seriously messed up.

I can't slow it down enough to tell if the last tube is counting 0->9 
correctly.

Funny! Great opportunity to troubleshoot the clock. 

Terry

On Friday, March 16, 2018 at 7:11:56 AM UTC-5, Terry S wrote:
>
> Mitch, in the video you linked to, the last 2 digits are clearly counting 
> 00 -> 59. 
>
> On Thursday, March 15, 2018 at 5:47:50 PM UTC-5, Mitch wrote:
>>
>> Terry, I never even thought that the last tube was running at 60Hz! The 
>> tenth seconds digit does appear to cycle through all ten digits within one 
>> second, though. 
>>
>> All five circuit board that hold the tubes, appear to be identical.
>>
>>
>>>

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[neonixie-l] OT: Radioactive clock

[Paul Andrews]

I thought you all might find this amusing. I while back there was a thread 
about tubes with radon in them. That set me off on a little side-quest where I 
ended building a Geiger counter using an old Russian Geiger-mueller tube. It 
has never detected anything but background levels.

I also buy other vintage stuff, and my wife just asked me to check one of them 
for radioactivity, because she said “it looks like it glows”. It had never 
occurred to me. Anyhow, here is the result:

https://youtu.be/PMrHIyntT4s

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[neonixie-l] Re: Digi-Vista Nixie Clock From 1970

[Terry S]

Mitch, in the video you linked to, the last 2 digits are clearly counting 
00 -> 59. 

On Thursday, March 15, 2018 at 5:47:50 PM UTC-5, Mitch wrote:
>
> Terry, I never even thought that the last tube was running at 60Hz! The 
> tenth seconds digit does appear to cycle through all ten digits within one 
> second, though. 
>
> All five circuit board that hold the tubes, appear to be identical.
>
>
>>

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