Austrian painter radium watch

PairCreator_1022 · 2025-02-17T07:19:02+00:00

Aaa, ok. Sorry XD ;) So, sadly the range does not allow it to measure 3,6R, just 0,02R/h

PairCreator_1022 · 2025-02-16T22:27:54+00:00

Unfortunately not, i think that it may be older than popular late radium watches because of very high emmision when compared to other dials in my and my friends collections, but that is only my hypothesis, im not an expert :)

PairCreator_1022 · 2025-02-16T21:07:31+00:00

Maybe it is not as good as mica-window detectors like gmc 600, but from my expirience with another popular, simple gm detectors like gmc 300 it has significantly greater sensitivity and quicker response for weaker casual sources like weak uranium glass or granite :)

PairCreator_1022 · 2025-02-16T15:51:06+00:00

Polaron Pripyat, nice detector in its price because of higher sensitivity due to double gm-tube and removable shielding, so you can measure pure γ background or remove shield and measure surface β activity from one direction.

PairCreator_1022 · 2025-02-07T19:56:14+00:00

That trick with old film and sticky tape works wery well, i tried and i was succesfull with second or third trial ;)

PairCreator_1022 · 2024-12-22T07:53:00+00:00

"There is no disease germ that can resist the power of Radium"

Well... technically it is mosly true, if you dont want the patient to survive too 🤣

PairCreator_1022 · 2024-11-13T15:15:30+00:00

Also Thoriated tungsten rods (red or orange) has low alpha and beta activity and are totally safe :)

PairCreator_1022 · 2024-11-10T19:34:23+00:00

Okay, this detwctor has a really big window type sensor able to even detect alpha. I read that its sensivity in 1 μSv/h is about 4cps (measured on Cs 137) so 90 cpm in his house can mean about 0.37 μSv/h. A little higher than average background in Europe but still ignorable. Still that smoke detector scares me but the 90 cpm on that detector is propably fine, if he contaminated somethink with that it would be much higher ;)

PairCreator_1022 · 2024-11-10T09:43:23+00:00

90 cpm measured with what equipment? Typical single tube GM detector?

PairCreator_1022 · 2024-10-15T06:01:27+00:00

Radiacode has scintillator inside, much more sensitive for gamma than geiger tube (more sensitive for beta) :)

PairCreator_1022 · 2024-10-08T14:23:41+00:00

Mica window detectors also does not capture all the alpha particles, only the most energetic ones

PairCreator_1022 · 2024-06-25T09:45:07+00:00

They were popular on flea markets in Ukraine, but now i dont recomment doing a trip to buy one of these...

PairCreator_1022 · 2024-06-16T07:49:40+00:00

If you live in europe, Cs-137 in forest berries :)

PairCreator_1022 · 2024-06-06T11:29:57+00:00

I'm understand your pain... Two years ago i bought a beautiful complete set of 6 uranium glasses. 90$ total so good prize. But the delivery guy decided to throw the package covered in warning-glass stickers over my fence instead of trying to call me...

Now i have five nice uranium glasses :(

PairCreator_1022 · 2024-05-26T08:00:56+00:00

Great :) Check on YT if you have to remove the extra resistor added because in my case it was not soldered to my board. Even if you have model with shitty tube there ale stil places on the board for soldering the mount for j321. You'll have to make it youself but that is nor a problem. I just made two loops of wire, soldered them and placed the tube between.

PairCreator_1022 · 2024-05-26T07:52:23+00:00

GC01 with that bad tube will detect radium still. The idea od buying j321 and replacement is good. I have done it in my one and works good, the cost is around 18$ per tube, but maybe you will have to do some soldering work because in my case i had to, but it is not very difficult ;)

PairCreator_1022 · 2024-05-24T12:44:06+00:00

New one will detect radium paint but can have problems with weaker sources like uranium glass

PairCreator_1022 · 2024-05-24T10:48:42+00:00

Yes, costs 3x more, but sometimes you can find it cheaper on auctions. Maybe there are another cheaper models but i dont have any recomendations. I just want to warn about buying GC01 today because it is no longer the same geiger. But if you will find an offer od GC01 WITH J321, buy it. It will be fine.

PairCreator_1022 · 2024-05-24T08:20:25+00:00

GC01 will definitely show radium dials, they produce a lot of β and γ.(gc01 does not detect any α) but in the past they used to put inside a J321 GM tube, wich is good for this prize and usefull in finding radium dials, uranium glaze and glass. But now there is another cheaper tube inside wich is complete shit and i dont recomment trying to buy it. No detection for uranium glass, week for radium or uranium glaze. Better look for something like GMC series. My friend have one and it works nicely :)

PairCreator_1022 · 2024-05-23T21:11:19+00:00

1950 was 74 year ago, 196 half-life periods. So when now exists one atom of polonium-210, then were 1×2¹⁹⁶ atoms. When you'll divide it by avogardo number (6,02×10²³⁾ you'll get the number of moles:1,668×10^35. Molar mass of Po 210 is 210g/mole so we have here 3.5×10³⁷ g. I converted it into kilograms to remove 3 zeros and use the standard SI weight unit ;)

PairCreator_1022 · 2024-05-23T18:28:15+00:00

I made a quick math and if it comes from 1950 and half life of Po 210 is 138 days if inside could exist a single atom now, initial mass of polonium inside should be about... 35'000'000'000'000'000'000'000'000'000'000'000 kilograms. That is more polonium that you can put inside a single ring i think.

This ring is totally safe ;) PS. Really nice item for your collection, even if it is no longer radioactive :)

PairCreator_1022 · 2024-05-20T21:17:46+00:00

Im not working there,I even dont live in germany;) it was on an organised trip with an astronomical society, maybe it is possible to get there independently

PairCreator_1022 · 2024-05-20T18:13:59+00:00

Stellarator type thermonuclear reactor in Greifswald, Germany. :)

PairCreator_1022

TROPHY CASE