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În prealabil postat de abaaaabbbb63
The ratio of normal carbon (carbon-12) to carbon-14 in the air and in all living things at any given time is nearly constant. Maybe one in a trillion carbon atoms are carbon-14. The carbon-14 atoms are always decaying, but they are being replaced by new carbon-14 atoms at a constant rate. At this moment, your body has a certain percentage of carbon-14 atoms in it, and all living plants and animals have the same percentage.
As soon as a living organism dies, it stops taking in new carbon. The ratio of carbon-12 to carbon-14 at the moment of death is the same as every other living thing, but the carbon-14 decays and is not replaced. The carbon-14 decays with its half-life of 5,700 years, while the amount of carbon-12 remains constant in the sample. By looking at the ratio of carbon-12 to carbon-14 in the sample and comparing it to the ratio in a living organism, it is possible to determine the age of a formerly living thing fairly precisely.
Because the half-life of carbon-14 is 5,700 years, it is only reliable for dating objects up to about 60,000 years old.
Dar alegi sa ramai ignorant fata de datarea folosind zircon, nu? Bine, alegerea ta. Nu sunt eu acela care nu a luat in considerare realitatea.
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Tu nu intelegi ca e rationament circular cu carbonul ? Ca daca pamantul are miliarde de ani atunci normal ca proportia e constanta astazi. Dar daca are sub 10.000 de ani atunci nu e constanta ci creste in timp. Ce e asa de greu de inteles ?
Nu aleg sa "raman ignorant " ci m-am saturat sa vad ca faceti acelasi lucru pe care-l fac si ceilalti dar sa le spuneti ca raman ignoranti. Concret exista astazi dovada ca unele animale care se credea ca au trait acum zeci de milioane de ani au trait foarte recent. Ca inventeaza unii repede o poveste cu fierul, ca imi spui tu ca zirconul e mai tare ca C14, nu ma intereseaza.
Sa prezerveze un hamburger sau ceva cateva zeci de milioane de ani si pe urma mai vorbim.