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Furthermore, the ratio is known to fluctuate significantly over relatively short periods of time (e.g.
Unfortunately the ratio of carbon-12 to carbon-14 has yet to reach a state of equilibrium in our atmosphere; there is more carbon-14 in the air today than there was thousands of years ago.
Unfortunately, we aren't able to reliably date artifacts beyond several thousand years.
Scientists have tried to extend confidence in the carbon dating method further back in time by calibrating the method using tree ring dating.
age; $noon Today London Time = Carbon::create From Time(12, 0, 0, 'Europe/London'); $internet Will Blow Up On = Carbon::create(2038, 01, 19, 3, 14, 7, 'GMT'); // Don't really want this to happen so mock now Carbon::set Test Now(Carbon::create From Date(2000, 1, 1)); // comparisons are always done in UTC if (Carbon::now()-diff For Humans(); // '2 minutes ago' // ...