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originally posted by: PeterMcFly
a reply to: intrptr
Half life of elements is immaterial when it comes to ingesting them.
If I follow your logic, ingestion of potassium-40 (1.251×10^9 years) shall be very dangerous.
When a person eats an average 150 gram banana, they absorb about .1 micro-Sieverts of radiation. A person would have to eat 27 bananas a day for 100 years to up their cancer risk by 1 percent.
Don't read this
At the time of the Manhattan Project in 1944, the "tolerance dose" for workers was set at 0.1 microgram of ingested radium.
Sorry but I think that half-life is very important as it relate to the activity in becquerel.
A 'becquerel' is a measure of decay events detectable by instrument.
I think it is you who need some revision of the theory.
originally posted by: PeterMcFly
a reply to: intrptr
Would you please stop constantly deflecting the arguments given and comment of the provided info.
originally posted by: intrptr
originally posted by: PeterMcFly
a reply to: intrptr
Would you please stop constantly deflecting the arguments given and comment of the provided info.
Yah okay, now switch to personal attack. The thread topic is 'sales of radioactive elements' to other than authorized agencies to make bombs (dirty or otherwise) to inflict harm on people.
My actual information about the harm of radioactive contamination internal to the body and in the environment is very on topic. You and others are deflecting with the usual 'same as background', 'natural' and 'banana gambits'.
How about you try staying on topic. Also, i cant see ANY personal attack anywhere in his post
originally posted by: intrptr
a reply to: 3danimator2014
Very good. Google image searches are full of misleading info, just like you. You have to sort through the garbage.
originally posted by: intrptr
a reply to: Bedlam
Sure it is. The article is describing refined but not enriched uranium.
"Refined" isn't "Natural", nice try.
Source Internal or external to the human body?
Half life of elements is immaterial when it comes to ingesting them.
originally posted by: intrptr
the banana gambit isn't going to fly.
When a person eats an average 150 gram banana, they absorb about .1 micro-Sieverts of radiation. A person would have to eat 27 bananas a day for 100 years to up their cancer risk by 1 percent.
originally posted by: intrptr
A 'becquerel' is a measure of decay eventsdetectable by instrumentper second.
This becomes less relevant for instance when dealing with alpha emitters internal to the body.
originally posted by: intrptr
A particle of alpha emitting radioactive contamination inside you is hardly "theoretical".
Heres a 24 hour radio graph of PU in the lung tissue an ape…
Unless you're talking alphas, it really doesn't matter.
It's always material. If it has an infinite half-life, it's not radioactive at all.
The emission is the same inside your body or out…the becquerels won't vary.
It also doesn't STAY vaporized, and precipitates out as dust.
originally posted by: intrptr
a reply to: Bedlam
First it wasn't dangerous because it wasn't "refined" now, its not "enriched".
Pffft…
Then its considered stable, not radioactive, wouldn't set off detectors and wouldn't be arresting people for trying to sell it.