[neonixie-l] Re: Radioactive Nixies - Study

Dont worry about alpha particles, the SBM-20 is made from metal, so alpha particles can't reach the inside of the tube. Alpha particles are usally blocked by a piece of paper or a sufficient space of air. The SBM-20 tube you have is not alpha sensitive, so don't worry about them. For an

[neonixie-l] Re: Radioactive Nixies - Study

I did try putting the SB-20 on top of a bunch of tubes (a bunch = 3 in this case). It briefly got up to around 120CPM, but mostly hovered around 50-70CPM. I'm not sure what background is at my place. Anything between 15 and 35 CPM maybe. So maybe it registered something, or it could be

[neonixie-l] Re: Radioactive Nixies - Study

Just got my radioactive nixie tubes. Sadly they seem to make my geiger counter read less than normal!

[neonixie-l] Re: Radioactive Nixies - Study

*Norskman*, I have privately replied. Please do the same or email me so we don't fill up this thread with posts. thanks -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an

Re: [neonixie-l] Re: Radioactive Nixies - Study

On 03/16/2017 12:42 AM, 'threeneurons' via neonixie-l wrote: > A few years back, Westdave had just visited his cardiologist, the day > before the TRW swapmeet. He had an exam, that required ingesting some > radioactive "juice". At the swapmeet, a vendor was selling a working geiger >

RE: [neonixie-l] Re: Radioactive Nixies - Study

Onderwerp: Re: [neonixie-l] Re: Radioactive Nixies - Study "We" used a couple of tiny very sensitive [and fast apparently] scr and triac devices in an IR movement detector light for home use. Around the time models were made for the UK market a fax was received from some US agency via

[neonixie-l] Re: Radioactive Nixies - Study

These Krytrons are nice! I want one so bad, but sadly they seem to be export controlled from united states because they were part of nukes :-( -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving

[neonixie-l] Re: Radioactive Nixies - Study

A krytron. A gas filled cold cathode trigger tube, containing radioactive material used to detonate a nuke. A few years back, Westdave had just visited his cardiologist, the day before the TRW swapmeet. He had an exam, that

[neonixie-l] Re: Radioactive Nixies - Study

There is no danger about them tubes! Even a few cm away you cant detect the radiation anymore. 8 of the 5092a could not produce a visible gamma spectrometry peak on my professional detector. For comparison, a 6141 Voltage Regulator Tube does produce a relative big peak. About tubes from

[neonixie-l] Re: Radioactive Nixies - Study

Well, the first thing I did when I built my Geiger counter was to go through all of my ex-USSR sourced stuff. Just in case, you know :). Nothing hot in there so far. On Tuesday, March 14, 2017 at 3:22:03 AM UTC-3, Terry Kennedy wrote: > > On Sunday, March 12, 2017 at 11:17:31 PM UTC-4, Paul

Re: [neonixie-l] Re: Radioactive Nixies - Study

On 03/14/2017 05:05 AM, Luca Bertagnolio wrote: > Welcome to the fascinating world of radiation, known by little and > feared by most, for no good reason. More people have been killed by > fear of radiation than by radiation itself. This is literally true. Several people were killed fleeing

[neonixie-l] Re: Radioactive Nixies - Study

Which is where my thoughts about the provenance of tubes from the Ukraine arises. Where are these warehouses that for some reason still have large quantities of Nixie tubes in them? This doesn't keep me up at night, but I would like to know. Perhaps someone could make a documentary about the

Re: [neonixie-l] Re: Radioactive Nixies - Study

On 14 March 2017 at 09:25:17, newxito (axta...@gmail.com) wrote: I begin to get really nervous, I think I'll buy a geiger counter a geiger counter will do nothing to reduce your nervousness, in fact it might even make it worse, for no real good reason. What can help you dominate your unwarranted

Re: [neonixie-l] Re: Radioactive Nixies - Study

On Tue, Mar 14, 2017 at 9:25 AM, newxito wrote: I begin to get really nervous, I think I'll buy a geiger counter > Measuring radioactivity is a science itself and to get meaningful data you need to have a good understanding of the phenomena (physics). For example, measuring emissions close to

[neonixie-l] Re: Radioactive Nixies - Study

I begin to get really nervous, I think I'll buy a geiger counter -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post

[neonixie-l] Re: Radioactive Nixies - Study

On Sunday, March 12, 2017 at 11:17:31 PM UTC-4, Paul Andrews wrote: > > I have often wondered about taking a geiger counter to my tubes. Call me > paranoid, but I wonder where some of the NOS tubes come from precisely. > Some years ago I bought an Elektronika 7-06K from an eBay seller in

[neonixie-l] Re: Radioactive Nixies - Study

Another really hot source that can be found at home is maybe in a smoke detector! Some smoke-detecors use Am-241 sources to ionize the air. But the sources are encapsulated and you only can detect them if you disassemble your smoke alarm (which i would not do!) -- You received this message

Re: [neonixie-l] Re: Radioactive Nixies - Study

I didn't include the mantles because most people don't have them. A lot of people use the salt substitute. The Coleman replacement mantles sold by Century and made in India are still quite hot. http://www.neon-john.com/Nuke/century_mantle.jpg Last time I checked, WalMart still carried them.

Re: [neonixie-l] Re: Radioactive Nixies - Study

Well, I have bought a couple of old gas lamp mantle spares, the ones that shine *very* bright, and use them to check my geiger counters too. They use thorium to give out that extra bright. New ones are made with another process, not so bright but with no radioactive substances either. As far as

[neonixie-l] Re: Radioactive Nixies - Study

Here is the image -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving

[neonixie-l] Re: Radioactive Nixies - Study

@ Paolo Cravero Attached is an image of my tube. For detection of the Kr85 in this tube you need a beta-sensitve counter that is placed close to the tube. Just 1-2 cm away you cant detect it anymore @gregebert If you have more tubes, only the area that is radioactive will be greater, the

[neonixie-l] Re: Radioactive Nixies - Study

I have often wondered about taking a geiger counter to my tubes. Call me paranoid, but I wonder where some of the NOS tubes come from precisely. On Sunday, March 12, 2017 at 3:41:11 PM UTC-4, SWISSNIXIE - Jonathan F. wrote: > > Hi > > This might be a little off topic or irrelevant, but maybe

Re: [neonixie-l] Re: Radioactive Nixies - Study

On 03/12/2017 06:16 PM, Charles MacDonald wrote: > But how many Bananas and Brazil nuts do you keep around. those are the > real home based radiation sources... > > http://www.neon-john.com/Nuke/Salt_substitute.jpg http://www.neon-john.com/Nuke/K40_on_geiger_counter.jpg

Re: [neonixie-l] Re: Radioactive Nixies - Study

On 17-03-12 04:56 PM, gregebert wrote: 1 tube may produce 0.4uSv/Hr, but a clock with many more tubes will produce more radiation. I have a total of 47 nixie tubes operating in my home, plus another 6 at work. However, most of my tubes are at least 50 years old, so I'm not too concerned. But

[neonixie-l] Re: Radioactive Nixies - Study

1 tube may produce 0.4uSv/Hr, but a clock with many more tubes will produce more radiation. I have a total of 47 nixie tubes operating in my home, plus another 6 at work. However, most of my tubes are at least 50 years old, so I'm not too concerned. -- You received this message because you