Principal researcher's brother here, but if there's enough interest I could get him to show up :) He enjoys talking about the math. PR-E paper[1] and 240000fps video of engine ignition and wave formation[2]<p>[1] <a href="https://journals.aps.org/pre/abstract/10.1103/PhysRevE.101.013106" rel="nofollow">https://journals.aps.org/pre/abstract/10.1103/PhysRevE.101.0...</a><p>[2] <a href="https://www.youtube.com/watch?v=zXSsd7uXjt8&feature=youtu.be" rel="nofollow">https://www.youtube.com/watch?v=zXSsd7uXjt8&feature=youtu.be</a>