Friction normally needs two surfaces rubbing together. Physicists just proved light can do the job all by itself.

Friction results from a set of complex processes that act together to resist relative motion. Despite this complexity, friction is often described using simple phenomenological expressions that relate ...

We explain and illustrate charging by friction, conduction, and induction. In this Closer Look segment on friction, conduction, and induction, we explain and illustrate charging by friction, ...

Friction is defined as the resistance to relative motion between two bodies of contact. The force of friction is independent of the area of surfaces in contact and is directly proportional to the ...