http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/ PAGE 2...for Archives go to PAGE1 Sun, 08 Nov 2009 22:36:57 GMT Sicurezza Torre WTC http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17469 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17469 To be clear: The reading is showing 1.4 mR in the fast reading.(1407 uR). If I 'd use the x0.001 position it would go out of scale the display show 1407 I Sun, 08 Nov 2009 22:15:32 GMT Sicurezza Torre WTC http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17468 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17468 I connected my piezo just in the output of the first cmos after the detection. Unfortunately it is in the lower pcb so you hve to dismount. The sound is not so Sun, 08 Nov 2009 21:40:27 GMT Olivier http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17467 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17467 Hello to everybody. I'm quite new in the world of ionizing radiations, and I recently bought a russian RKSB 104 geiger counter. I found the english manual Sun, 08 Nov 2009 19:33:20 GMT Sicurezza Torre WTC http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17466 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17466 Did she survie him??? ... From: Douglas Benn To: geigercounterenthusiasts@yahoogroups.com Sent: Sunday, November 08, 2009 5:46 PM Subject: RE: Sun, 08 Nov 2009 16:47:47 GMT Douglas Benn http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17465 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17465 His first human radiograph was of his wife Bertha's hand and it required 25 minutes of exposure. Douglas K Benn To: GeigerCounterEnthusiasts@yahoogroups.com Sun, 08 Nov 2009 16:21:42 GMT D. Emer http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17464 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17464 We ran HPGe gamma spectroscopy on a Twinkie once and to our surprise found absolutely nothing in it including potassium-40 I guess this doesn't surprise the Sun, 08 Nov 2009 15:28:56 GMT Chris Cavanaugh http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17463 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17463 Excellent Video. I have never thought to test coffee before however I do not drink instant, not enough caffiene! Chris Cavanaugh cav427@... Yukon, OK ... Sun, 08 Nov 2009 13:26:17 GMT Sicurezza Torre WTC http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17462 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17462 I could find twice or more background on clearly natural emitting stones. If this is quite natural it is not in the instant coffee. I don't think this is a Sun, 08 Nov 2009 13:24:30 GMT rschaffrath http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17461 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17461 ... In the early days there were referred to as Cathode Rays. It is also interesting that Roentgen did not suffer ill effects from X-Ray experiments because he Sun, 08 Nov 2009 13:11:22 GMT pe1rln http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17460 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17460 Potassium/Kalium has a low percentage of a radioactive isotope. You can see that the radiation is twice or three times as high as backgroundnoise but that Sun, 08 Nov 2009 13:02:26 GMT Sicurezza Torre WTC http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17459 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17459 the tubes above sold as "count tube" they probably are stabilizer tubes ( equivalent to zener solid state). Nothing to do with GM tubes. 475 volt is the Sun, 08 Nov 2009 03:48:06 GMT bcer_eh http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17458 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17458 On this day in 1895, while playing with a Crookes tube, Wilhelm Conrad Rontgen accidentally produced and detected radiation in the range of 10 - 0.01 Sat, 07 Nov 2009 21:12:47 GMT wharpt@... http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17457 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17457 Betcha somewhere in the ingredients list is something with potassium. In a message dated 11/7/2009 3:06:02 P.M. Central Standard Time, torre.wtc@... Sat, 07 Nov 2009 21:05:40 GMT Sicurezza Torre WTC http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17456 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17456 What about the normal coffee???? If it is only the instant coffee the contamination could be in the process or some add-on Is it? ... From: oe8uww To: Sat, 07 Nov 2009 20:01:53 GMT oe8uww http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17455 http://tech.groups.yahoo.com/group/GeigerCounterEnthusiasts/message/17455 For your pleasure http://www.youtube.com/watch?v=ILFbFs9yEto w.