A new definition of energy by Ngo Quang Ha

Energy is a quantity that characterizes motion, and it has a direction

The direction of energy depends on the curvature of the field.

In the book "The Universe is a unified object", author Ngo Quang Ha clearly distinguishes between negative, positive, and neutral energies, and the proportions of these energy components in the universe.

The book (in English) is available on Amazon: https://www.amazon.com/dp/B0HCGYPFK1