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
I was fascinated by the material provided for school teachers by the US Geological Society about dating rocks.
For a classroom activity they suggest:
Have your students look for evidence of date stamps and cornerstones on their walk home. Depending upon your area, there may be quite a few.
Duh! Building stones may have date stamps but rocks [...]
Continue reading about USGS site misleads teachers and school children about dating
Latest Comments