The mathematical secrets behind the design and value of coins

The Maths of Coins and Currencies · 59:04 · Video: Gresham College · Watch at the source

In short: From Archimedes' methods for detecting fraud to the complex proportions required for medieval coinage, discover how mathematics has shaped the very nature of money.

This lecture explores the historical intersection of mathematics and currency. It examines how Archimedes developed techniques to identify counterfeit gold, and the immense challenges faced by mathematicians like Fibonacci when determining the correct metal proportions for medieval coins. Additionally, the presentation investigates the logic of denominations and why Sir Christopher Wren, the former Gresham Professor of Astronomy, preferred a decimalised system for coinage.

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