What exactly is Heat Death in terms of the "Fate" of the Universe?

Question

What is the difference between Heat Death and Big Rip?

Answer 1

Heat Death is a general concept of the future of the universe based on basic thermodynamics; all it requires is for the universe to be around long enough. Every process in the universe results the universe's entropy either staying the same or increasing, and the former are usually pretty boring (like spinning around in circles, going nowhere). Combine that with the fact that there is a calculable finite maximum entropy the universe can have, and it follows that eventually all processes must cease (except for very boring ones, of course). That's a good definition for death.

The big rip is a specific hypothetical outcome based on a very liberal interpretation of dark energy in which all particles end up parting company due to an ever-increasing repulsion effect.

Answer 2

Heat death is the theory that because the universe is expanding at an accelerating rate, it will "diffuse" like a gas and evetually everything will die and the universe will be a vastly empty, cold, dark place.

You see when suns have used up all their fuel, and planets have cooled, and nebula no longer glow, etc, the one saving grace would be gravity. When gravity pulls enough material together, it starts amassing hydrogen, which is very abundant in the universe, and when enough of this masses together, it ignites into a new star, which, if it's large enough, will explode into a supernova and a new cycle of universal life begins.

But because the universe is expanding, the matter in it may eventually become very isolated from other matter, and when everything dies, gravity will not be able to pull enough matter together to begin to attract large amounts of hydrogen to ignite new stars and thus life. Maybe someday, some race will lok up in the sky and see no other stars just because they are so far away from them, and when their solar system goes cold, that's it.

The big rip, on the other hand, is the theory that since the unniverse is expanding at an accelerating rate, the fabric of space...if there is such a thing, will eventually rip to pieces. What happens, next, I don't know, but I'm sure Frank the bunny man does.

Answer 3

The so-called Big Rip end of the universe is a highly speculative notion that the end of the end of all matter in the universe, including individual atoms and their subatomic particles, will occur when dark energy increases to such a magnitude that it literally destroys these entities. This theory hasn't been well accepted by the scientific community because at this time no one knows just what dark energy is, therefore what its future conditions might be. Dark energy is the name given to the mysterious force that seems to be causing the expansion rate of the universe to increase.

The Heat Death is another scenario (..one that's more acceptable to most scientists..) that has the universe gradually decaying away due more to natural radioactive decay of all matter, including sub atomic particles, along with the ultimate cooling of the cosmic microwave background radiation down to absolute zero.

Answer 4

warmth loss of life is somewhat a finished misnomer. As mass-potential isn't created or destroyed, then the completed quantity of potential attainable interior the universe won't replace over the years. even inspite of the shown fact that, it is not potential that drives the universe. it somewhat is entropy. In different words, it somewhat is the propensity of the universe to occupy extra microstates over the years. We stay to tell the story in the worldwide as a results of fact potential come from the sunlight as a small sort of extreme potential photons (decrease entropy). via the time we hav achieved with it it re-radiates into area as a lots larger sort of low potential photons (larger entropy from larger sort of microstates). enable this to proceed indefinitely around the universe and, whether it expands, contracts or reaches a young state, finally it somewhat is going to attain a uniform "beige" state the place each and every thing is on a similar temperature Even Stephen Hawking - who proposed in a short background of Time that interior the 2d 0.5 of the universe's existence this arrow of entropy could factor beackwards - has now revised his opinion. The sort of microstates in contact in entropy is limitless, so predicting consequences includes evaluating infinities. that's the place the different confusion right here stems. to make certain by this think of filling a field with purple and black balls. for each purple ball you upload 9 black balls. You try this for eternity. you finally end up with a limiteless quantity of balls. however the limitless sort of purple balls would desire to be smaller than the limitless sort of black balls. And this in turn would desire to be smaller that the completed (limitless) sort of balls. And the risk of grabbing a purple ball at random keeps to be a million in 10. Take care once you argue statistical mechanics with infinities.

Answer 5

WHen compacting things hte tempature rises.
The universe may one day start collapsing on itself

THen it leads to another universe like a Chain Of Events

Answer 6

Tricky question:
two systems are in thermal equilibrium when the temperature stays the same.

two systems are in mechanical equilibrium when pressure is the same.

two systems are diffusive equilibrium when chemical potentials are the same.

Answer 7

heat death means, fire annihilation and big rip means the ultimate explosion