Friction is an intrinsic physical phenomenon to curling. Without it, objects in motion would move endlessly, without slowing down. This would cause many safety-related problems: Cars or trains could ...

Recent advances in quantum mechanics have spurred novel methodologies that revisit classical kinetic energy concepts through nonlocal-in-time formalisms. By extending traditional frameworks with ...

We walk here, we walk there, we walk everywhere. Maybe you’re headed to work or to lunch in a busy city. You’re expending energy, and the exercise is good for you. But what if, on top of that, we ...