On 09/01/2021 10:41, Jan Panteltje wrote:
> On a sunny day (Sat, 9 Jan 2021 09:24:59 +0000) it happened The Natural
> Philosopher  wrote in :
>
>> On 09/01/2021 08:57, Ahem A Rivet's Shot wrote:
>>> On Sat, 09 Jan 2021 08:23:38 GMT
>>> Jan Panteltje  wrote:
>>>
>>>> As to radiation, I moved house a month or so ago, been logging radiation
>>>> for years
>>>>
http://panteltje.com/pub/background_radiation_from_one_place_to_the_other.gif
>>>> note the sudden increase, those are counts per minute from
>>>>      http://panteltje.com/panteltje/pic/gm_pic/
>>>>
>>>> Why?
>>>
>>>          Is there a radon barrier under your house ?
>>>
>>
>> is that µS/h?
>>
>> If so its normal for a granite style area.
>> get worried when it isn't a click every 5 seconds, but a high pitched
>> scream.....
>>
>>
>> Normal background is around 5mS/Yr
>> Granite areas up to 20mS/yr
>> Some places up to 200mS/yr.
>>
>> The amount before cancer risks measurably increase is massively more.
>>
>> The amount before the Japanese government declares an emergency is
>> massively less.
>>
>> The amount before Jane Fonda declares an emergency is zero.
>
> :-)
> Yea, anyways I also designed and build a gamma spectrometer, been some years
since I played with all that,
> was even subscribed to some related google group at the time.
> The gamma spectrometer and that GM counter is sitting next to me:
>  
http://panteltje.com/pub/gamma_spectrometer_plus_probe_plus_geiger_counter_2_IM
G_4185.JPG
>    had no time yet to look a this, the PMT (in the large green cardboard
tube) needs changing (old Russian one abused by me).
>
> And I have this one in pieces somewhere:
>   http://panteltje.com/panteltje/pic/sc_pic/
>     much better PMT, using scintillator crystals from ebay....
>     note the radium and uranium samples
>     been 'under construction' for >14 years now....
>      nuclear war did not happen yet... ;-)
>
 From what I have read on latest research radiation is not a significant
hazard beyond about 50% more than the blast radius anyway.
If you dont get vapourised or smashed to bits, you probably wont die of
cancer.

The LNT model which was used to scare people in the 1960s has been
completely discredited.


> And and, well...
> this one is smaller and also gives very high levels here:
>   http://panteltje.com/panteltje/pic/gm_pic2/
>    it records GPS location and radiation level to SDcard, can be used for
prospecting...
>     my adventure in using / programming OLED displays..
>
>
what are you using as a detector?


--
Of what good are dead warriors? … Warriors are those who desire battle
more than peace. Those who seek battle despite peace. Those who thump
their spears on the ground and talk of honor. Those who leap high the
battle dance and dream of glory … The good of dead warriors, Mother, is
that they are dead.
Sheri S Tepper: The Awakeners.

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