6 ms·
An interesting experiment to detect presence of radon at home using a geiger counter. If you have a HEPA air purifier that has been running for a few months, t
by noipv4 4y ago
An interesting experiment to detect presence of radon at home using a geiger counter.
If you have a HEPA air purifier that has been running for a few months, then bring a geiger counter that does beta particles, near (1-2) cm of the filter and if it starts showing a lot of increased radioactivity over background readings, it means that there are radon decay elements captured in the filter panel.
- kragen 4y agoWhat Geiger counter do you recommend? Will buying one get you put on a list?
- aYsY4dDQ2NrcNzA 4y agoA marketing list, maybe.
- copperx 4y agoList? Is it now illegal to measure radiation?
- kragen 4y agoNot that I know of, but there are lots of legal things that attract law enforcement attention these days, depending on where you live: tattoos, cash transactions, fertilizer, VPN services, borax, red phosphorus, gas masks, numerous visitors, and so on.
- jollyllama 4y agoUnless you mean "specific tattoos", having no tattoos is probably more anomalous for people under a certain age. I would the cutoff is within the broad range of 35-50.
- kragen 4y agoAs I said, it depends on where you live. Here in Argentina having no tattoos is more anomalous than having them for people in the 35–50 range, just as you say; but in Japan they mark you as a criminal, in Iran they're a symbol of rejection of the theocracy, in PRC it's illegal to show them on TV, and Erykah Badu is banned from performing in Malaysia because she has "Allah" tattooed across her shoulders. Both the Yazidis and the Kurds have tattoo traditions that have at times been persecuted by Daesh, Iran, and Turkey; I don't know how active that phenomenon is at the moment.
- jollyllama 4y agoVery true.
- stareatgoats 4y agoThe paranoid prepper list. Most preppers are peaceful people wanting to mind their own business, but some suffer from conditions that makes them hope for a disaster to happen to the extent that they might not shy from creating them. Or so the thinking might go.
- noipv4 4y agoI have several, ranging from $$ to $$$. Most bought on ebay. I live in Europe thus need them in case Russia or Ukraine decide to go crazy with nukes. Check ebay; GMC branded is decent Chinese one. Some of them also come with an espressif wifi card to send results to a webserver. https://www.gmcmap.com https://www.gmcmap.com. There are also Arduino kits that come with Soviet era geiger tubes (SBM 20).
- kragen 4y agoThanks! Uh, maybe I can just use a solar cell or something.
- sliken 4y agoKinda cool, but if you want radon levels why not buy a radon detector? Like this one: https://www.airthings.com/wave-plus https://www.airthings.com/wave-plus No need to try to find and calibrate some used Russian geiger counter.