Reaction

In science, reaction is closely realted to Newton's third law: "For every action there is an equal and opposite reaction". The idea that any given force has a pair or opposite force.

This law has often been applied to social sciences, and is a basic premise of the popular Game theory.

A reaction is any responsed caused by some other action. There are many different types of reactions:

• Chemical reaction
• Reflex reaction[?]
• light reaction
• Hill reaction[?]