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The math behind radiocarbon dating

I was just reading the latest issue of Wired on my iPad and came across this cool article which explains the math behind radiocarbon dating. Living things constantly consume carbon—through photosynthesis, for plants, and for animals, ingestion of those plants. The atmospheric ratio of carbon-14 to regular carbon-12 remains consistent at

Ancient Egyptian mathematics

The New York Times has an interesting piece about the Rhind Mathematical Papyrus, a 3,600 year old document that contains 85 different math problems. The Rhind papyrus, which dates to 1650 B.C., is one of several precocious papyri and other artifacts displaying Egyptian mathematical ingenuity. There is the Moscow Mathematical

Wooden tablet with multiplication sums found in Japan

A wooden tablet etched with multiplication sums, dating back to the late Nara Period (710-784), has been unearthed in Nara, Japan. It is believed that the wooden tablet, or "mokkan," was used by an official for times table practice."The characters are not that tidy, and it was probably used by

Original method used to calculate dinosaur mass flawed?

Scientists believe the original method used to calculate dinosaur mass was flawed and that most dinosaurs were half as heavy as previously believed. Palaeontologists have for 25 years used a published statistical model to estimate body weight of giant dinosaurs and other extraordinarily large animals in extinct lineages,' said lead researcher