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Group Information

  • Members: 878
  • Category: Physics
  • Founded: Jul 17, 2003
  • Language: English
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Activity within 7 days:

56 New Messages - New Questions

Description

Welcome to the Alpha Beta Gamma Society.
This group is for amateurs intersted in building, collecting, repairing, modifying, discussing, and learning about Geiger Counters and other Radiation measuring equipment. We often stray into Electronics, Radio, Astronomy, Optics, Microscopy, and many other aspects of measuring or exploring the Physical Universe.

Most Recent Messages

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Re: A Basic Question About How Photons Are Emitted From A Scintillat
Alan, yours is a good point. But also remember that, even if a surface is 90 percent reflective, then after only two reflections, the photon has an 81 percent
Posted - Sun Jul 5, 2009 3:14 pm
 photonfunnel
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Re: My first PMT
Thanks for your information! Now I have a clear imagen of what I have to do. I hope to make the first test in this week.
Posted - Sun Jul 5, 2009 11:56 am
 Miguel A. Vallejo
ea4eoz
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Re: SV500
Thanks a lot . Very usefull the plugs pinout !! ... From: scalcon1978 To: GeigerCounterEnthusiasts@yahoogroups.com Sent: Saturday, July 04, 2009 9:30 PM
Posted - Sun Jul 5, 2009 10:44 am
 Sicurezza Torre WTC
happynewlaser
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Re: SV500
... try this pdf it isn't the scheme it's the manual it's in german there only a block-scheme http://rapidshare.de/files/47755602/sv500.pdf.html
Posted - Sat Jul 4, 2009 7:30 pm
 scalcon1978
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Re: A Basic Question About How Photons Are Emitted From A Scintillat
... Not quite true. Scintillators are usually surrounded by a reflective surface to correct this problem. For example, see the structure of any of the
Posted - Sat Jul 4, 2009 7:13 pm
 Alan R. Betz
alan61ca
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Message History

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2009 254 291 362 256 237 188 52
2008 258 374 359 380 529 169 332 227 288 152 127 135
2007 212 218 431 410 422 179 216 214 294 179 182 121
2006 89 133 189 85 105 126 127 167 171 309 181 251
2005 385 327 282 194 152 159 175 580 274 291 215 144
2004 155 188 186 123 127 117 180 276 236 238 177 152
2003 49 73 41 120 53 43
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