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At what amounts can negative energy be produced by the Casimir effect? I know these are very small, but I am curious to know how small.
0xDEADBEEF said:All that stuff is very speculative. I remember Kip Thorne talking about exotic matter in one of his popular science books. The idea was that it would take exotic matter with negative energy to stabilize a wormhole, and he mentioned that vacuum fluctuations can have such a negative energy. If you look up, exotic matter and negative mass you get short snippets on wikipedia. I think the idea is connected to negative pressure in the Casimir effect. So you say that in normal vacuum the pressure is zero, but the Casimir effect produces an attraction, therefore there is negative pressure between the plates, and I suppose you get some kind of estimate for the negative energy from the negative pressure times the volume between the plates, but that is a wild guess.
Negative energy is a concept in physics that refers to the potential energy that exists in a system due to attractive forces between particles. It is often represented by a negative value in equations and can contribute to the overall energy of a system.
Negative energy is typically measured in units of Joules (J) or electron volts (eV) in the field of physics. It can also be expressed in terms of potential energy or as a negative value in equations that calculate the total energy of a system.
Negative energy plays a crucial role in the structure and behavior of the universe. It is believed to contribute to the expansion of the universe and the formation of large-scale structures such as galaxies and galaxy clusters. It also plays a role in the behavior of subatomic particles and their interactions.
No, negative energy and dark energy are two separate concepts in physics. While negative energy refers to potential energy in a system, dark energy is a hypothetical form of energy that is believed to contribute to the acceleration of the expansion of the universe.
Negative energy and entropy are closely related concepts in physics. Entropy is a measure of disorder or randomness in a system, and negative energy can contribute to decreasing the overall entropy of a system. In other words, negative energy can lead to a more organized and stable system, while positive energy can contribute to increasing entropy.