Differential equations are fundamental tools in physics: they are used to describe phenomena ranging from fluid dynamics to general relativity. But when these equations become stiff (i.e. they involve ...

Body mass index, or BMI for short, is a measure of body weight based on your height. For decades, BMI has been a way to measure whether someone is at a healthy weight. In general, people are ...

"With this, we can detect very tiny changes in both position and momentum at once, beyond the limit of any classical sensor," the authors explained.