Four Fundamental Forces

The four fundamental forces or interactions in physics (see Wikipedia for more detail) are the gravitational force, the electromagnetic force, the strong nuclear force and the weak nuclear force.

These forces are to the mineral kingdom what love is to the human kingdom. This means that they way they influence material things teaches us about how love influences us.

Gravity represents the form of love that pulls people together.

Electromagnetic radiation in the form of light represents the form of love which illuminates. Electromagnetic radiation of frequencies below light represents love which is more deep and strong than illuminating love, and frequencies above light represent love which is higher and more transcendent than illuminating love.

Magnetism between positive and negative poles represents the form of love in which opposites attract, for example sexual love.