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Geiger Counter?
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Nov 23, 2022 06:16:44   #
jerryc41 Loc: Catskill Mts of NY
 
Do any of you have Geiger counters? I came across a comparison test of them on YouTube last night. A woman in Germany tested some "cheap" ($100) units from Amazon against her good one. One of them did about as well as the expensive one. Looking it up on Amazon, it's about half the price she paid. Although I like technology, I wouldn't have much use for one of these. I'd be disappointed that I was always getting low readying, but I'd be terrified if I got high readings "What you don't know can't hurt you."

"...can meet your daily needs for detecting radioactive radiation." Yes, my daily needs.


https://smile.amazon.com/Kavolet-Radiation-Detector-Household-Radioactive/dp/B09V5475ZT/ref=sr_1_2_sspa?crid=2QNNZYB2SMYSK&keywords=pudibei+nr-750+geiger+counter&qid=1669202077&s=industrial&sprefix=pudibei%2Cindustrial%2C74&sr=1-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

They call it a Geiger counter, but it counts sieverts.

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Nov 23, 2022 06:54:05   #
ELNikkor
 
I found one in the cellar from 1961 that takes 4 D-cell batteries, but don't know how it compares to others.


(Download)

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Nov 23, 2022 07:03:51   #
jerryc41 Loc: Catskill Mts of NY
 
That's the kind I see in the old movies. I hate having to find D cells. I have a mantel clock that used one or two, and charging them is a nuisance.

I see that was made in the USA. That proves it's old. : )

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Nov 23, 2022 07:13:38   #
ELNikkor
 
Old, but solid.

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Nov 23, 2022 07:16:30   #
jerryc41 Loc: Catskill Mts of NY
 
ELNikkor wrote:
Old, but solid.


Try it on bananas. They're supposedly radioactive. Actually, bring it into a supermarket and check the bananas. Have someone accompany you with a clipboard. That'll spook the customers.

Bananas contain naturally occurring radioactive isotopes, particularly potassium-40 (40K), one of several naturally occurring isotopes of potassium.

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Nov 23, 2022 07:18:13   #
Longshadow Loc: Audubon, PA, United States
 
No, don't have one.
(No need to count Geigers.)

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Nov 23, 2022 07:29:16   #
Blaster34 Loc: Florida Treasure Coast
 
ELNikkor wrote:
I found one in the cellar from 1961 that takes 4 D-cell batteries, but don't know how it compares to others.


Was that out of your old bomb shelter from, 'back in the day'?

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Nov 23, 2022 08:08:48   #
Jim70 Loc: Delaware
 
Actually, they can be useful in evaluating old lenses from, Zeiss, Kodak, and others, some old Glass is radioactive.

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Nov 23, 2022 08:09:47   #
Longshadow Loc: Audubon, PA, United States
 
Jim70 wrote:
Actually, they can be useful in evaluating old lenses from, Zeiss, Kodak, and others, some old Glass is radioactive.

Wow, must be some hot cameras!

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Nov 23, 2022 11:30:13   #
jerryc41 Loc: Catskill Mts of NY
 
Jim70 wrote:
Actually, they can be useful in evaluating old lenses from, Zeiss, Kodak, and others, some old Glass is radioactive.


I wonder if there's a filter for that. : )

Wow! Dozens of lenses.

https://camerapedia.fandom.com/wiki/Radioactive_lenses

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Nov 23, 2022 23:36:58   #
Harry02 Loc: Gardena, CA
 
Jim70 wrote:
Actually, they can be useful in evaluating old lenses from, Zeiss, Kodak, and others, some old Glass is radioactive.


I remember somebody somewhere doing the numbers.
Something like using those nice pale yellow lenses for 6 hours per day, for 20 years,
to equal 1 chest X-Ray.
I DID get rid of my glowy watches from the 50's tho,

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Nov 24, 2022 08:11:22   #
DaveC Loc: Illinois
 
After WWII there was much war surplus for sale, including optics. I was looking for telescope eyepieces and there were warnings that some were radioactive and should not be used. (I might still have a couple around.)

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Nov 24, 2022 08:19:47   #
rmalarz Loc: Tempe, Arizona
 
Jerry, that's just the sort of thing I'd want to do. That is, if I had a Geiger counter. I even have a white lab coat that I'd wear.
--Bob
jerryc41 wrote:
Try it on bananas. They're supposedly radioactive. Actually, bring it into a supermarket and check the bananas. Have someone accompany you with a clipboard. That'll spook the customers.

Bananas contain naturally occurring radioactive isotopes, particularly potassium-40 (40K), one of several naturally occurring isotopes of potassium.

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Nov 24, 2022 09:55:58   #
Tdearing Loc: Rockport, TX
 
Carried one forever in the demolition business, NORM and irradiated ferrous are big liability issues. One contaminated shipment can take down a mill. TSA surprisingly didn't fuss too bad when taking as a carry on, but trace amounts on shoes could be interesting. You can find a decent one pretty cheap.

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Nov 24, 2022 10:19:36   #
alberio Loc: Colorado
 
ELNikkor wrote:
I found one in the cellar from 1961 that takes 4 D-cell batteries, but don't know how it compares to others.


I used to have that same one, but dropped it down a uranium mine.

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