Geological Dating
These solid spherical stones, scattered over the beach on the South Island of New Zealand, look like the remains of a monster game of marbles. (Click image to enlarge.)
They are spectacular examples of concretions, which form when a mineral precipitates from the ground water cementing the loose grains of sediment into solid rock. As [...]
A swimming race illustrates the simple principles involved in measuring time. This swimmer is competing in a 1,500 metre race and we have an accurate, calibrated wristwatch. We note that at the instant the swimmer touches the edge of the pool our wristwatch reads 7:41 and 53 seconds. How long has the [...]
Continue reading about The fatal flaw with radioactive dating methods
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