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Re: Eight things you might not know about light

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On 4/20/2016 12:41 PM, Odd Bodkin wrote:
> On 4/20/2016 12:26 PM, benj wrote:
>> On 04/20/2016 09:12 AM, Odd Bodkin wrote:
>>> On 4/19/2016 11:08 PM, benj wrote:
>>>>
>>>> You think HVAC or Wormley or Odd have the slightest clue what a
>>>> photomultiplier is, let alone how to wire one up?
>>>
>>> I know what a PMT is, and I've wired one up before.
>>
>> Oh wait. You are an amateur scientist, so that makes the difference!
>
> PMTs are pretty commonplace.
>
>>
>> Ever see any "photons"?
>>
>
> Sure seen signals from PMTs.
> Also have seen clicks from Geiger counters. Gamma rays, you know.
>
>

eBay has PMTs cheap, you can put some scintillation plastic in front of 
it and detect gamma and cosmic rays easily, background radiation. Having 
an O scope makes it easy.  You can also detect xrays, and radioactive 
materials, and things like your granet kitchen counter. (make sure the 
wife is not around, unless shes physicist)

you can also get another type of crystal NaTil (expensive) and with it 
you can resolve radioactive products, software is free on line, and 
there is a unit you can buy for $250 with the electronics on ebay, and 
hookup your pmt and computer.

and PMTs take very little power, you can make it all portable.  One dude 
used a paint bucket size scintillation plastic to detect fossilized 
bones in the ground.

Only problem is when you try to take on an airplane, trying to explain 
that you are only trying to detect radioactive products...

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Eight things you might not know about light Sam Wormley <swormley1@gmail.com> - 2016-04-19 11:21 -0500
  Re: Eight things you might not know about light Helmut Wabnig <hwabnig@.- --- -.dotat> - 2016-04-19 18:31 +0200
    Re: Eight things you might not know about light Sam Wormley <swormley1@gmail.com> - 2016-04-19 11:33 -0500
    Re: Eight things you might not know about light Poutnik <poutnik4nntp@gmail.com> - 2016-04-19 18:42 +0200
    Re: Eight things you might not know about light Sergio <invalid@invalid.com> - 2016-04-19 18:06 -0500
      Re: Eight things you might not know about light benj <nobodyxx@gmail> - 2016-04-20 00:08 -0400
        Re: Eight things you might not know about light HVAC <mr.hvac@gmail.com> - 2016-04-20 04:25 -0700
          Re: Eight things you might not know about light benj <nobodyxx@gmail> - 2016-04-20 13:23 -0400
        Re: Eight things you might not know about light Odd Bodkin <bodkinodd@gmail.com> - 2016-04-20 08:12 -0500
          Re: Eight things you might not know about light benj <nobodyxx@gmail> - 2016-04-20 13:26 -0400
            Re: Eight things you might not know about light Odd Bodkin <bodkinodd@gmail.com> - 2016-04-20 12:41 -0500
              Re: Eight things you might not know about light Sergio <invalid@invalid.com> - 2016-04-20 12:53 -0500
              Re: Eight things you might not know about light benj <nobodyxx@gmail> - 2016-04-20 22:01 -0400
                Re: Eight things you might not know about light Odd Bodkin <bodkinodd@gmail.com> - 2016-04-21 08:51 -0500
                Re: Eight things you might not know about light benj <nobodyxx@gmail> - 2016-04-21 12:07 -0400
                Re: Eight things you might not know about light Odd Bodkin <bodkinodd@gmail.com> - 2016-04-21 11:34 -0500
                Re: Eight things you might not know about light benj <nobodyxx@gmail> - 2016-04-21 22:07 -0400
                Re: Eight things you might not know about light Odd Bodkin <bodkinodd@gmail.com> - 2016-04-22 07:42 -0500
                Re: Eight things you might not know about light Sergio <invalid@invalid.com> - 2016-04-21 11:33 -0500
                Re: Eight things you might not know about light benj <nobodyxx@gmail> - 2016-04-21 21:45 -0400
    Re: Eight things you might not know about light "Y.Porat" <y.y.porat@gmail.com> - 2016-04-20 01:43 -0700
  Re: Eight things you might not know about light "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-04-19 12:24 -0700
    Re: Eight things you might not know about light "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-04-19 15:32 -0700
    Re: Eight things you might not know about light benj <nobodyxx@gmail> - 2016-04-19 23:31 -0400
  Re: Eight things you might not know about light "nuny@bid.nes" <Alien8752@gmail.com> - 2016-04-19 17:08 -0700
    Re: Eight things you might not know about light Sam Wormley <swormley1@gmail.com> - 2016-04-19 19:23 -0500
    Re: Eight things you might not know about light benj <nobodyxx@gmail> - 2016-04-20 00:09 -0400
      Re: Eight things you might not know about light "nuny@bid.nes" <Alien8752@gmail.com> - 2016-04-19 23:15 -0700
  Re: Eight things you might not know about light Sylvia Else <sylvia@not.at.this.address> - 2016-04-20 12:07 +1000
    Re: Eight things you might not know about light benj <nobodyxx@gmail> - 2016-04-20 00:14 -0400
      Re: Eight things you might not know about light "Y.Porat" <y.y.porat@gmail.com> - 2016-04-20 06:38 -0700
    Re: Eight things you might not know about light Sam Wormley <swormley1@gmail.com> - 2016-04-20 11:09 -0500
      Re: Eight things you might not know about light benj <nobodyxx@gmail> - 2016-04-20 13:46 -0400
        Re: Eight things you might not know about light Poutnik <poutnik4nntp@gmail.com> - 2016-04-20 20:07 +0200
        Re: Eight things you might not know about light Sylvia Else <sylvia@not.at.this.address> - 2016-04-22 11:50 +1000
          Re: Eight things you might not know about light benj <nobodyxx@gmail> - 2016-04-21 23:19 -0400
  Re: Eight things you might not know about light "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-04-21 09:19 -0700
    Re: Eight things you might not know about light Sam Wormley <swormley1@gmail.com> - 2016-04-21 15:46 -0500

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