Dunno. They have 'carbon dating', but not sure if it goes back that far.
This man will have the answers, knows a thing or two about ageing rocks.
Wants Macca's Babies
Location: Chorley Lancs
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I'm Steve.
Dunno. They have 'carbon dating', but not sure if it goes back that far.
This man will have the answers, knows a thing or two about ageing rocks.
I just dropped in, to see what condition my condition was in
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Super Moderator
Location: W Lothian
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I'm Grant.
more than one way to do it but this is probably the most accurate...
Rocks often contain traces of uranium which is a radioisotope. It is unstable and eventually decays to form lead, which is stable.
Isotopes have a property known as their half-life. The half life of an isotope is the time it takes for half of the atoms to decay, for example the half-life of Uranium is 4.46 billion years!! This means if you had 10g of uranium it would take 4.46 billion years for 5g of it to decay to lead!
Regards,
Grant.... ؠ ......Don't be such a big girl's blouse
I've said it before and I'll say it again: democracy simply-doesn't-work.... ..... ...... ...... ................... ..... ..... ..... ..... .....
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Oh my god! There's nothing wrong with the bidet is there?
“Nothing discloses real character like the use of power. It is easy for the weak to be gentle. Most people can bear adversity. But if you wish to know what a man really is, give him power. This is the supreme test. It is the glory of Lincoln that, having almost absolute power, he never abused it, except on the side of mercy".
“You see these dictators on their pedestals, surrounded by the bayonets of their soldiers and the truncheons of their police ... yet in their hearts there is unspoken fear. They are afraid of words and thoughts: words spoken abroad, thoughts stirring at home -- all the more powerful because forbidden -- terrify them. A little mouse of thought appears in the room, and even the mightiest potentates are thrown into panic.”
"You don't have free will. You have the appearance of free will.”
“There's a war out there, old friend. A world war. And it's not about who's got the most bullets. It's about who controls the information. What we see and hear, how we work, what we think... it's all about the information!”
***SMILE, BE HAPPY***
Wants Macca's Babies
Location: Chorley Lancs
Posts: 19,352
I'm Steve.
Originally Posted by struth
brain the size of a planet
I just dropped in, to see what condition my condition was in
T/T: Inspire Monarch, X200 tonearm, Ortofon Quintet Blue. Phono: Project Tube Box CD: Marantz CD6006 (UK Edition); Amp: Musical Fidelity A5 Integrated.
Speakers: KEF Reference 3, REL T9i subwoofer. Cables: Atlas Equator interconnects, Atlas Hyper 3.0 speaker cables
T'other system:
Echo Dot, Arcam A75 integrated, Monitor Audio R852 MD speakers
A/V:
LG OLED65 G56LS, Panasonic Blu Ray, Sony a/v amp, MA Radius speakers, REL T9i sub.
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Location: Essex
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I'm openingabottleofwine.
Well done Grant! Thanks - I was only thinking of carbon dating, forgetting about other radio isotopes.
Doing a bit of research, it seems there are other geological phenomena which complicate matters, such as rocks undergoing change from igneous to metamorphic state and this has to corrected for, but on the whole what you say is correct.
Barry
Senior Member
Location: Suffolk
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I'm guy.
Your post spurred me on to check my pension status (I will “qualify” during February this year).
As I retired early from full time work I need to make “voluntary contributions” in order to maximise my pension - so I will need to live another two and a half years in order to recoup my voluntary contribution, after that I will be making money
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Arcam Alpha 7 CD
Wants Macca's Babies
Location: Chorley Lancs
Posts: 19,352
I'm Steve.
You may be able to "top up" your contributions to get you to a full pension. Might cost less than you think and will enable you to retire when you're supposed to. Worth checking out.
I just dropped in, to see what condition my condition was in
T/T: Inspire Monarch, X200 tonearm, Ortofon Quintet Blue. Phono: Project Tube Box CD: Marantz CD6006 (UK Edition); Amp: Musical Fidelity A5 Integrated.
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T'other system:
Echo Dot, Arcam A75 integrated, Monitor Audio R852 MD speakers
A/V:
LG OLED65 G56LS, Panasonic Blu Ray, Sony a/v amp, MA Radius speakers, REL T9i sub.
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Wants Macca's Babies
Location: Chorley Lancs
Posts: 19,352
I'm Steve.
Reaching retirement age won't mean me stopping work. I'll just be reducing my workload. A lot. And I'll be cherry-picking, leaving the shitty jobs for my lad to do
I just dropped in, to see what condition my condition was in
T/T: Inspire Monarch, X200 tonearm, Ortofon Quintet Blue. Phono: Project Tube Box CD: Marantz CD6006 (UK Edition); Amp: Musical Fidelity A5 Integrated.
Speakers: KEF Reference 3, REL T9i subwoofer. Cables: Atlas Equator interconnects, Atlas Hyper 3.0 speaker cables
T'other system:
Echo Dot, Arcam A75 integrated, Monitor Audio R852 MD speakers
A/V:
LG OLED65 G56LS, Panasonic Blu Ray, Sony a/v amp, MA Radius speakers, REL T9i sub.
KICKSTARTER: ENABLING SCAMMERS SINCE 2009
Senior Member
Location: Suffolk
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I'm guy.
I have - cost me about £1800 to maximise my pension.
Extra £20//week on pension, so I should be making on my extra contribution after about two years.
Actually possibly longer when I think about extra tax on my teaching pension.
I retired early about six years ago when my mum needed looking after/extra care, but I have been doing a bit of supply and invigilation (still do as it gets me out of the house - wife insists
LP12, Ittok (black), DV10X5, Art Audio Vinyl 1 phono stage, NVAP50 SA, Art Audio Quintet 15w power amp, NVA LS5 cable, Rega Ela mk1's.
Arcam Alpha 7 CD
Wants Macca's Babies
Location: Chorley Lancs
Posts: 19,352
I'm Steve.
I've been telling myself all week I would resume work on Thursday, but now it's here I just can't seem to drag myself off this sofa. Plus, it's peeing down outside. Nothing that can't wait till tomorrow, so...
I just dropped in, to see what condition my condition was in
T/T: Inspire Monarch, X200 tonearm, Ortofon Quintet Blue. Phono: Project Tube Box CD: Marantz CD6006 (UK Edition); Amp: Musical Fidelity A5 Integrated.
Speakers: KEF Reference 3, REL T9i subwoofer. Cables: Atlas Equator interconnects, Atlas Hyper 3.0 speaker cables
T'other system:
Echo Dot, Arcam A75 integrated, Monitor Audio R852 MD speakers
A/V:
LG OLED65 G56LS, Panasonic Blu Ray, Sony a/v amp, MA Radius speakers, REL T9i sub.
KICKSTARTER: ENABLING SCAMMERS SINCE 2009
Super Moderator
Location: W Lothian
Posts: 98,920
I'm Grant.
its winter shutdown
Regards,
Grant
I've said it before and I'll say it again: democracy simply-doesn't-work.... ..... ...... ...... ................... ..... ..... ..... ..... .....
FIIO K7 BT, M11 PLUS, BTR7, KA5 - OPPO BDP-103D - PANASONIC UB450 - PANASONIC 4K ULTRA HD TV - PIXEL 6 - AVANTREE LR BLUETOOTH - 2* X600 SOUNDCORE - HEADPHONES INCLUDE, FIIO, NURAPHONES', FOCAL, OPPO, BOSE, CAMBRIDGE, BOWER & WILKINS, DEVIALET, MARSHALL, SONY, MITCHELL & JOHNSTON - 2*ZBOOK'S- MERCURY BD ROM, ROON, QOBUZ, TIDAL, PLEX, CYBERLINK, JRIVER - MULTI HDD'S -
Oh my god! There's nothing wrong with the bidet is there?
“Nothing discloses real character like the use of power. It is easy for the weak to be gentle. Most people can bear adversity. But if you wish to know what a man really is, give him power. This is the supreme test. It is the glory of Lincoln that, having almost absolute power, he never abused it, except on the side of mercy".
“You see these dictators on their pedestals, surrounded by the bayonets of their soldiers and the truncheons of their police ... yet in their hearts there is unspoken fear. They are afraid of words and thoughts: words spoken abroad, thoughts stirring at home -- all the more powerful because forbidden -- terrify them. A little mouse of thought appears in the room, and even the mightiest potentates are thrown into panic.”
"You don't have free will. You have the appearance of free will.”
“There's a war out there, old friend. A world war. And it's not about who's got the most bullets. It's about who controls the information. What we see and hear, how we work, what we think... it's all about the information!”
***SMILE, BE HAPPY***
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