The acid solution will warm up even if the spring isn’t compressed, due to the heat of reaction as the acid dissolves the metal. If the spring is compressed, it will warm up slightly more. As each ...

Chemists and engineers have discovered a fundamental friction law that is leading to a deeper understanding of energy dissipation in friction and the design of two-dimensional materials capable of ...

Friction is a key phenomenon in applied physics, whose origin has been studied for centuries. Until now, it has been understood that mechanical wear-resistance and fluid lubrication affect friction, ...