What were the most important equations of 20th-century science? Here are 11 essays, aimed at non-specialists, each centred on a different equation. The authors are distinguished in their various ...

Equations are the bedrock of science, expressing how numbers or physical properties relate at a fundamental level. Without equations, most of our technology would never have been invented. We may have ...

Regression of log serum concentrations or log urine concentrations on time elapsed after primary exposure ceases is a common method for estimating the elimination rates and corresponding half-lives ...