We've seen some occurences of the inverse-square law in many forces in physics. For ex: the gravity and the Coulomb's force. But my question is: what does that mean? What does the inverse-square law mean? Gravity is caused by curvature of space-time due to the presence of a mass (or energy). I read in some book (that I don't remember the name) that other properties of elementary particles could cause curvature in other recurved dimensions of our universe. Then when a force is caused by a curvature in some dimension (or dimensions) it always obbeys the inverse-square law? Do anyone knows something interesting about this? Thank you.