Students can count on one thing for sure in Andrew Casson’s classes: No matter how challenging and complicated the mathematical problems, he will do his best to be concise and clear. Casson, the ...

Real and imaginary: The time-dependent Schrödinger equation formulated using complex numbers. (Courtesy: iStock/piranka) Complex numbers are essential to achieve the most accurate quantum-mechanical ...

Robyn Arianrhod does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...