OT: EV Charging Stations Stripped of Copper Cables
Jul 03, 2024 Last reply: 2 years ago 252 Replies
M
Martin Brown
He is right and you are wrong. They are primordeal radioactive materials left over from a supernova remnant ejecta when the Earth was formed and have been decaying away each according to their half life ever since.
The oldest *fissionable* materials are uranium (and thorium) which way back was sufficiently U235 rich that groundwater water was able to moderate fission reactions in the Oklo region. Complete with the signature Ru99 isotopic enrichment characteristic of fission products like Tc99 decay.
formatting link
Thorium isn't very naturally radioactive nor for that matter is depleted uranium mostly U238 (provided it hasn't been through a nuclear reactor). It is widely used as a super dense metal in engineering applications (and as an armour penetrator by the military). Pyrophoric on impact too.
Clean DU is even used in some of the best radiation shielding (sandwiched with a layer of pre-nuclear age steel on either side).
ITYM *I129* Apart from it having a nasty habit of concentrating in the thyroid gland. The really bad ones from a nuclear accident or detonation are I131 half life 8d and I132 (from Te132) half life 3d.
Pb205 is about the longest loved decay chain product at 1.7e7y (it is a trace impurity that when concentrated by a calutron requires Pb206 isotopic spikes to be marked as radioactive).
It is the ones with a short or moderate half life that are problematic for containment. Sr90 (30y) and Co60(5y) being notable examples.
Didn't find your answer? Ask the community — no account required.
C
Cursitor Doom
Bill Sloman is a notorious Australian troll, so I wouldn't attempt to debate with him because if he starts to lose an argument he resorts to lies to save face. Speaking of notorious Australian trolls, does Rod Speed still post here?
C
Cursitor Doom
Just you try trading one in!
Excuse me, Bill? ISTR *you're* the one who loves to boast and bask in the glory of having worked for some Cambridge based outfit at some time in the dim and distant past! And you got your degree at Sydney University which is hardly an Ivy League joint! :-D
C
Cursitor Doom
Very wise of her. "I can't have everyone knowing I'm married to someone with such loony ideas, darling!" LOL!
B
Bill Sloman
That's an assertion, not evidence. You should have realised by now that you aren't any kind of reliable witness, and can inf act be relied on to pick the most fatuous lying propaganda around.
<snip>
Boast? It was an eventful period, but there wasn't a lot of glory around.
Melbourne University. The "Ivy League" is a collection of eight American private universities
formatting link
So neither Sydney nor Melbourne is an Ivy League joint.
formatting link
puts Melbourne at 27th on the international pecking order, which doesn't say a thing about the education I got there from 1960 to 1969. The chemistry department where I got my Ph.D. didn't hire anybody who hadn't graduated from there for the next thirty years, which doesn't suggest that they were up to much. The first hire from outside that stayed was a guy I'd written a paper with, and the new professor of Inorganic Chemistry, hired a year or so later, was a guy who had been in my primary school class at Burnie, Tasmania, who used to swap "top of the boys" with me on a pretty regular basis all the way through.
You do like to see the world in terms of pecking orders - anything more informative overloads your tiny brain.
B
Bill Sloman
She put it more in terms of being worried about getting targetted by the likes of you.
Though you may find this difficult to believe, you are the lunatic ideas merchant around here - not me - and my wife and I shared much the same political opinions. So do most of my and her professional colleagues.
You are the MAGA-hat wearing freak around here, despite your delusions of level-headedness.
C
Cursitor Doom
At least that's something we *do* agree on! :-D
I'm afraid much as you egalitarian types would prefer otherwise, the fauna of the world evolved and continues to evolve according to a pecking order and to suggest otherwise flies in the face of both nature and reason. The world is a very unequal place. You 'Communitarian' types constantly deny this and dogmatically insist that all are equal, but that's far more compelling evidence for having a tiny brain than anything I've ever said!
T
The Natural Philosopher
Exactly. Nuclear waste.
Exactly Natuaral fission reacxtins creatng even more nuclear waste.
Any isotope with a half life of more than a few hundred years isn't very naturally radioactive.
That's the point the greentards™ cant grasp. If its going to be around thousands of years, its not very radioactive AT ALL.
Its used in te balance weighs on many airliners
Grandmother eggs suck
Precisely,. The longer it lasts the less dangerous it is,
The Greem Marxists love to conflate 'highly radioactive' 'lasts thousands of years' but its simply a propaganda lie.
That's what I have been saying. Stuff with a half life of a few hundred years is the problem, and a pyramid that works for 5000 years is plenty good enough
T
The Natural Philosopher
No idea. Been killfiled at least a decade
B
Bill Sloman
And you happen to be completely wrong, as usual. Stuff with a short half life is a particularly horrible threat, but you don't want environment contaminated with any of the longer lived stuff either - right out to Iodine-129 with it's 15.7 million year half-life.
Only an ignorant yokel like you could fail to see it as a threat.
B
Bill Sloman
For rather different reasons.
Pecking order is one area of competition. Evolution depends on having off-spring that survive to reproduce, so the capacity to get enough to eat comes into it too, amongst a whole lot of other things.
You clearly aren't up to that kind of reasoning, and like to simplify your life by leaving out the bits you have trouble comprehending.
A strange assertion. I've never asserted that "all are equal" and in fact tend to point out that the only people who even start off with identical genomes are identical twins, and even their geneomes don't stay identical much beyond conception.
You do seem to think that left-wingers insist that everybody is the same, but this isn't true.
The US Constitution does say "that all men are created equal" but it clearly didn't mean identical.
This does seem to be another of those complicated ideas that you can't actually comprehend.
I
invalid unparseable
That's good, even necessary, but it shouldn't supress the occasional excursion into absurdity, which is where ideas come from.
I was just talking to a guy who runs the electronics group at one of our US National Labs. He asked me what sort of stuff we do, and I said "lunatic fringe electronics." He laughed and said that's what he does too.
We agree that scientists present us with wonderful problems to instrument but are generally terrible at designing electronics themselves.
I was just reading some similar thoughts about ideas in a book by Freeman Dyson.
T
The Natural Philosopher
This supposed dichotomy between academic and pragmatic knowledge is false. Both are necessary Example 1. ======= We were developing a laser rangefinder for the Army, featuring fragile optics a ruby laser and a bloody expensive silicon photodiode. Try as we might we couldnt get more than just over a mile range from the lab roof to a white painted building about a mile away. One day a boffin with a tweed jacket and pipe came visiting, we explained our problem. "How much power is the laser?" "EWhat is te noise figure on the photodiode"? "I'll see whats what over lunch"
He came back later and sid - "Oh, well its not good news I am afraid, with that much power and that much front end noise you will be lucky to get a mile put of that with a nice reflective target" So we gave up, drained all the money out that projects budget and cancelled it.
Example 2 ======
I was tasked with designing amongst other things a FM Hifi receiver. To save time we imported a Japanese tuner head and I built the IF strip and detector. The customer was however German, and totally chauvinistic. No Japanese quality. We must have German or at least European, So we got a Philips head. At once we had massive hiss and hum. I didn't have time to track it diown so a consultant was briught on who spent a fortnight calculating the noise contribution of my IF strop and said 'well it doesn't seem to be that' 'I could have saved to two weeks of calculation' 'How so' 'Just pull the tuner out, put in a 10.7MHz signal into theh IF strip and look! No f****ng noise'
(It turned out that wunderbar German tuner head was a pile of crap. They had used a zener diode to stabilize the VCO without seeming to understand that a zener is an ideal noise source, and they had used ferrite slugs in the VCO which make marvellous detectors of magnetic fields. Germans are s*it engineers. They make up for it by testing and fiddling till stuff works. A nation of technicians)
The point here is that academic knowledge can eliminate solutions that
*cannot* work,. . like 'renewable energy' without having to spend a fortune trying to make it work... Conversely practical experience is way faster than a computer model...
"Are you sure that beam will take the load of pulling an engine out of t forklift?" "we pulled a bigger one out with it last week"
R
Ralph Mowery
Sounds like a German engineer that was in charge of a new instalation where I worked. We asked him for the settings on some instruments. He said 'we week it up and we tweak it down and when she runs , she runs.'
C
Cursitor Doom
On a visit to the UK some years ago I went to the Science Museum in Kensington (or wherever it is). They had a Spitfire and a Messerschmit on one of the floors and each had cut-away engines. The Spitfire engine was of course a Rolls-Royce Merlin and the quality of the engineering was staggering. You didn't have to be an engineer to appreciate it. Beautifully polished components shining like mirrors. How the hell they produced workmanship like that in the middle of a major war is beyond me. It was superhuman. The German plane's engine was a pile of garbage in comparison; very crudely thrown together with poorly machined parts. Still, it did fair job I suppose, even though it couldn't match the performance of the Spitfire in the air.
I
invalid unparseable
Some Nazi bigwig saw a Merlin engine and announced that they would lose the war.
C
Cursitor Doom
I think you misunderstood what he said (as usual) Bill. The kind of exposure is also highly relevant. Most notably ingestion as opposed to simple proximity to the source. You are aware - I assume - that different modes of radiation (eg. alpha, beta, gamma etc.) have different penetrative qualities and whilst lead is required to screen out some types, others can't even make it through skin.
C
Cursitor Doom
Same here, hence the question. Just imagine all the time we've saved in not having to read and respond to his silly old nonsense.
B
Bill Sloman
You usually do. You don't understand much, and imagine that your own defective understanding justifies quite a bit of off-target rudeness.
The problem with the longer-lived radio-nucleotide is that they will still be dangerous long after our current civilisation is dead and forgotten. We can't predict who or what will get exposed to our radioactive waste, or how they might get exposed.
Burying it deep in some kind of geologically stable structure is the best we can do, and we still aren't actually doing it, some seventy years after we started generating high level radioative waste.
Obviously. I've had a technical education that does explicitly include that kind of information. I've even worked on electron microscopes which rely on beta-particles (electrons) as their illuminating mechanism.
If you knew what you were talking about, you'd know that, rather than having to "assume" it.
C
Cursitor Doom
Jeez, Bill. I was only trying to be kind to you and you're attacking me for it! I don't think I'll ever understand you Communists.
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required
Report Content
You are reporting this content to the moderators. They will look at it
ASAP.