Physicists have debated which way a submerged sprinkler sucking in water would spin. Careful experiments provide an answer.

I originally created this as a short to-do list of study topics for becoming a software engineer, but it grew to the large list you see today. After going through this study plan, I got hired as a ...

Setting ∇f to find an extremum of f (u) yields an Euler–Lagrange equation, the most famous examples of which are probably Lagrangian mechanics and also the Brachistochrone problem, but it also shows ...