4 ms·
Since gravity is an illusion, did you mean to say that time dilation has negative energy? What does that mean?
by politician 6y ago
Since gravity is an illusion, did you mean to say that time dilation has negative energy? What does that mean?
- opwieurposiu 6y agoIf you have two apples floating in space, it takes positive energy to pull them apart against the force of gravity. Since energy must balance out, this means the gravitational field has negative energy. https://www.livescience.com/33129-total-energy-universe-zero.html https://www.livescience.com/33129-total-energy-universe-zero... For energy balance it does not make a difference if you think of gravity as a real force or an illusion caused by curved space.
- cygx 6y agoIf you have a positive and a negative charge floating in space, it takes positive energy to pull them apart against the force of electromagnetism. And yet, the energy density of the electromagnetic field is strictly positive.
- politician 6y agoThanks for the explanation.
- simonh 6y agoThere is energy in the curvature of spacetime, in the form of the gravitational stress-energy tensor.