The first semester of an undergraduate physics course invariably spends a lot of time on two big ideas: The momentum principle and the work energy principle. Both deal with forces acting on an object, ...

In January I wrote a piece titled “5 Physics Equations Everyone Should Know.” Lots of you weighed in with your own nominations, and there were plenty of good suggestions. So I’ve decided to do a ...

E = mc 2 may be the most quotidian equation in physics. Everyone’s heard of it and it’s been proven time and again. Did you convert mass into energy? Go tell it to the stars, whose light is generated ...

Maxwell’s equations of electromagnetism and the Euler equation top a poll to find the greatest equations of all time. Robert P Crease discusses the results of his reader survey First among equals – ...

Global conflicts are making renewable energy more attractive, but an all-renewable grid will require solving physics problems ...