Turn your camera phone into a Geiger counter

I wonder how plausible it'd be to make a little spinthariscope[1] attachment to stick over the camera instead. Rather than affecting the CMOS camera element itself, you generate visible light flashes with a fluorescing capture material.<p>[1] <a href="https://en.wikipedia.org/wiki/Spinthariscope" rel="nofollow">https://en.wikipedia.org/wiki/Spinthariscope</a>

If you dig this, you'll want to check out Safecast.<p>Safecast (<a href="http://blog.safecast.org/" rel="nofollow">http://blog.safecast.org/</a>) is "a global sensor network for collecting and sharing radiation measurements to empower people with data about their environments." They are working on some really awesome tech and helping people in Japan.

Direct link to Rolf-Dieter Klein's site: <a href="http://www.rdklein.de/" rel="nofollow">http://www.rdklein.de/</a><p>Says there's an iOS version awaiting approval.

So this is the CMOS equivalent of the astronauts whose retinas are bombarded by cosmic rays? Neat stuff.

Very neat. I work at a cancer center and I've noticed a very similar effect on the CCTV at the operator console of the linear accelerators (the camera is inside the bunker).

Note that the speckled image in the post shows the result when exposed to 10Sv/hr. 1Sv makes you sick, 10Sv is virtually guaranteed to be fatal.

I am convinced that we actually had the idea first and built the first prototype for this. Sadly, my companies bureaucracy held up the release of the application. I even wrote a blog post about it a while back...<p><a href="http://spoiledtechie.com/post/2011/09/12/Fucking-Big-Company-Rules.aspx" rel="nofollow">http://spoiledtechie.com/post/2011/09/12/Fucking-Big-Company...</a>

Related - endoscopic probe into the Fukushima Nr.2 reactor shows radiation artifacts: <a href="http://www.smh.com.au/world/first-glimpse-inside-fukushima-reactor-20120120-1qaap.html" rel="nofollow">http://www.smh.com.au/world/first-glimpse-inside-fukushima-r...</a>

Could you stick a smoke detector in a smoke-filled bag with the americium pulled out to make a geiger counter?

If the camera is covered with tape, why can I still see the room in the image?

Can anyone tell me how this is possible? Im vey dubious.

I m going to try it on a banana <a href="http://en.wikipedia.org/wiki/Banana_equivalent_dose" rel="nofollow">http://en.wikipedia.org/wiki/Banana_equivalent_dose</a>