How far back can carbon dating go

07-Sep-2014 16:57 by 9 Comments

How far back can carbon dating go - Free sexy girls chat camera without sign up

Radiocarbon dating has somehow avoided collapse onto its own battered foundation, and now lurches onward with feigned consistency.The implications of pervasive contamination and ancient variations in carbon-14 levels are steadfastly ignored by those who base their argument upon the dates.

This collision is less destructive than the initial collision that produced them.

...[Some authors have said] they were "not aware of a single significant disagreement" on any sample that had been dated at different labs.

Such enthusiasts continue to claim, incredible though it may seem, that "no gross discrepancies are apparent".

It is the supposed accuracy of the new method that allows measurements sensitive enough to date objects claimed to be more than twenty or thirty thousand years old.

A recent test by the British Science and Engineering Research Council has shown that the accuracy of the new technique is greatly overrated.

Radioactive carbon (Carbon 14) is formed in the upper atmosphere as a byproduct of cosmic radiation.

Cosmic rays are positively charged atoms moving at enormous speeds.

However, because it has too many neutrons for the number of protons it contains, it is not a stable atom.

Every 5,730 years, approximately half of this radioactive carbon spontaneously converts itself back into nitrogen by emitting an electron from a neutron.

They found large variations in the radiocarbon 'dates' of objects of known age sent to 38 radiocarbon 'dating' laboratories around the world.

Thirty-one of the labs gave results that the British group called unsatisfactory.

This limit is currently accepted by nearly all radiocarbon dating practitioners.