Is it possible to deduce the shape of a drum from the sounds it makes? This is the kind of question that Iosif Polterovich, a professor in the Department of Mathematics and Statistics at Université de Montréal, likes to ask. Polterovich uses spectral geometry, a branch of mathematics, to understand physical phenomena involving wave propagation.
If you click on the image you get this:![](https://Feddit.uk/pictrs/image/ee7a54d0-b476-47ce-a39a-5b4ee2877f97.png)