'heat.' The reason that we no longer worry about the heat death of the universe is that the Other elementary particles which eventually come to equilibrium. But over time, as the sun burns hydrogen and as planets collide andР”В«reak apart and as particles decay and so on, everything eventually ends up as photons or So we're not in equilibrium with the heatР”В«ath of the universe. Obviously you and I and the sun are much hotter. These are the cosmic microwaveР”В«ackground photons at a 'temperature' of 2.78 Kelvin. In such a universe we have a 'heat bath' of photons. Universe so let's just assume that the universe is static. Really reach equilibrium - but the scientists of the 1800s didn't know about the expanding This is complicated aР”В«it by the fact that the universe is expanding.

Universe is converted to heat then the universe will be in equilibrium - everything willР”В«e of the same temperature and entropy will remain constant forever. Under the name of the 'Heat Death of the Universe.' In short, once all of the energy in the That's a famous question that people thought a lot about in the nineteenth century.

So the question is, what happens when all the usable energy is Universe today there are processes all around us that are converting one type of energy orР”Р„nother into heat energy. Which states that in a closed system any process can either keep the entropy constant or That statement is not in conflict with the Second Law of Thermodynamics In relativity theory we can convert one to another but energy isР”Р„lways conserved.

Physicists would prefer to say that energy isР”В¬onserved, not matter. If so, what happens when there is nothing left to be disordered? How can matter be constant? Asked by: Lisa The Second Law of Thermodynamics states that the universe tends toward high entropy.

The second law of thermodynamics states