Now I think that the gravitational field doesn't have energy at all, because the gravity is just the reflection of the structure of space-time, it's nonsense to talk about the Lagrangian and the Hamiltonian of gravitational field.what't your opinion?
let's consider the potential energy of one positive charge and one negative charge, it's:
-k*q*q/r,which is [SIZE="5"]negative.in this model, we assume that the potential which is infinitely far away from the charge is zero.However, if we use the integral of the field intensity to calculate the...
We know that the energy density of the electric field is:
\frac{1}{2}*\epsilon*E2
then, can we infer that the energy density of the gravitational field is:
1/(8\piG)*g2? Here, g is the gravitational field intensity