Great! I look forward to seeing those Geigers counters.<br><br> Joohn Foote is also interested, he will be doing a demo soon, so perhaps we could organize a demo day for radiation stuff at NB.<br><br>I will wait to see the general interest before we set up a day and time.<br>
<br> I will of course lots of drinks will also be part, no drinks no radiation.<br><br>D<br><br><div class="gmail_quote">On Mon, Apr 27, 2009 at 11:04 AM, Rich Humphrey <span dir="ltr"><<a href="mailto:rich_humphrey@yahoo.com">rich_humphrey@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
Hey-<br>
Yes, I am interested. I have some Geiger counters, which are fun to play with. Also, it's really easy to interface a 600 volt geiger-meuller tube to 5 volt logic, with only resistors!<br>
<br>
They're only one way to sense radiation, there are a few others, which I'm not as familiar with and I'd like to learn about.<br>
<br>
Note that this is important science to safeguard, New York City has outlawed Geiger Counters without a permit on the grounds that there is no reason for the general public to have them and they could cause a panic. Never mind that they were invented 105 years ago! (This is a very scary attempt to limit information by controlling one's ability to analyze one's own environment!)<br>
<br>
If you want to test things I have some harmless test samples as well as some very old smoke detector parts that make radiation nicely. Also have a coolidge x-ray tube, but I haven't hooked it up yet. I have made x-rays with an old TV diode tube though, it's really easy to wire up.<br>
<br>
I also have all the stuff for a simple cloud chamber, and I haven't had the chance to do it yet.<br>
<br>
If anybody wants to play with atoms let me know!<br>
<br>
=Rich<br>
<br>
P.S. All this stuff is harmless, unless you EAT a sample or something. X-rays can be dangerous, but are not anywhere even close to being as dangerous as people think!<br>
<br>
<br>
-----------------------------------------------------------<br>
Richard Mortimer Humphrey<br>
General Specialist<br>
<br>
--- On Mon, 4/27/09, daniela Steinsapir <<a href="mailto:danielast@gmail.com">danielast@gmail.com</a>> wrote:<br>
<br>
> From: daniela Steinsapir <<a href="mailto:danielast@gmail.com">danielast@gmail.com</a>><br>
> Subject: [Noisebridge-discuss] radiations sensors- radioactive parts<br>
> To: "<<a href="mailto:noisebridge-discuss@lists.noisebridge.net">noisebridge-discuss@lists.noisebridge.net</a>>" <<a href="mailto:noisebridge-discuss@lists.noisebridge.net">noisebridge-discuss@lists.noisebridge.net</a>><br>
> Date: Monday, April 27, 2009, 10:18 AM<br>
<div><div></div><div class="h5">> hi there<br>
><br>
> is anybody interested in radiation sensors and or in<br>
> radioactive materials?<br>
><br>
> let me know!<br>
><br>
> D<br>
><br>
> --<br>
> <a href="http://www.danielast.com" target="_blank">www.danielast.com</a><br>
><br>
><br>
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