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kodama
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since there is energy in the vacuum does it also gravitate?
can energy measured in cc explain mond-dark matter effects?
can energy measured in cc explain mond-dark matter effects?
kodama said:since there is energy in the vaccuum
Vanadium 50 said:What do you mean by this? Exactly. This is a topic that has a lot of misconceptions and half-baked definitions that if you don't define it this will become one of those multipage threads that go nowhere.
CC? Carbon Copy?
kodama said:since there is energy in the vacuum does it also gravitate?
kodama said:can energy measured in cc explain mond-dark matter effects?
PeterDonis said:If you mean, does it affect the curvature of spacetime, yes. That's obvious just looking at the Einstein Field Equation.
No. Dark energy or a cosmological constant, the kind of "energy in the vacuum" I assume you are talking about, causes a different kind of spacetime curvature than dark matter (or ordinary matter and radiation). The simplest manifestation of the difference is that dark energy causes the expansion of the universe to accelerate, whereas dark matter, ordinary matter, and radiation all cause it to decelerate.
kodama said:mass-energy is always attractive and additive.
kodama said:is that consistent though? mass-energy is always attractive and additive. shouldn't the total energy contained in a vacuum in a volume the size of a andromeda galaxy cause it to decelerate?
Simon Bridge said:hat are you calling "energy in the vaccuum"?
There are lots of things you could mean by that.
kodama said:the measured cosmological constant
Vanadium 50 said:Asked twice, no answer, and this thread is already down the "hey, let's all guess what the OP meant!" path.
kodama said:i understand the issue you raise about pressure.
kodama said:based on the equivalence principle
The cc energy, also known as the cosmological constant, has a gravitational effect in the sense that it contributes to the curvature of spacetime. In Einstein's theory of general relativity, the cosmological constant is included as a term in the Einstein field equations, which describe the relationship between the curvature of spacetime and the distribution of matter and energy.
No, cc energy is not the only factor that contributes to gravitation. In addition to the cosmological constant, there are other forms of energy and matter that also have a gravitational effect. For example, matter and radiation also contribute to the curvature of spacetime and thus have a gravitational influence.
No, cc energy does not have a stronger gravitational pull than other forms of energy. The strength of the gravitational pull depends on the amount of energy and matter present, as well as the distance between objects. While the cosmological constant does play a role in shaping the overall curvature of spacetime, it is not necessarily stronger than other forms of energy.
The cc energy is often equated with dark energy, as both represent a type of energy that permeates all of space and has a repulsive effect on the expansion of the universe. However, the true nature of dark energy is still not fully understood and it is possible that it may not be exactly equivalent to the cosmological constant.
At this time, there is no known way to harness cc energy for practical use. The effects of the cosmological constant are only observed on a large scale in the universe and are not accessible or controllable by humans. However, as our understanding of dark energy and the cosmological constant continues to evolve, it is possible that new technologies may be developed in the future.