When you need a quick measurement and have no ruler around, the common objects you have in your wallet can give you an approximation. Here are the dimensions for US paper money, coins, credit cards, ...

This release is also available in Chinese on EurekAlert! Chinese. College Park, MD (August 31, 2010) -- With the advent of nanometer-sized machines, there is considerable demand for stable, precise ...

Size Matters: Measuring distances between molecules is no simple task, but a team of German researchers has developed a new method that could revolutionize biological research and possibly even impact ...

A team of astronomers has created the first standardized set of measurement guidelines for analyzing and cataloging stars. Previously, as with the longitude problem 300 years earlier for fixing ...