Albert Einstein once said, “Energy cannot be created or destroyed; it can only be changed from one form to another.” He was describing the law of conservation of energy, ...

A pair of mathematicians have proposed a unified theory of dark matter and dark energy that alters Einstein's equations describing the fundamentals of gravity. They suggest the law of energy and ...

The mathematical physics underpinning electromagnetic fields and wave equations provides a rigorous framework for understanding the behaviour of electric and magnetic phenomena in both classical and ...

Energy efficiency in physics is not measured the way most people think about it. Instead of asking how much heat a process produces per unit of fuel, physicists often compare how much of a substance’s ...

What were the most important equations of 20th-century science? Here are 11 essays, aimed at non-specialists, each centred on a different equation. The authors are distinguished in their various ...

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