Entropy increasing?

by Null_
Tags: entropy, increasing
Null_ is offline
May18-10, 01:18 PM
P: 232
Second law of thermo- dS = δq /T
Getting what I think straight: it was extremely hot at the big bang, and all matter existed within the "sphere" or whatever you wish to call the point. There was nothing outside this, so the average temperature was incredibly high. As the universe expanded, the mass just spread out, forming into quarks, then protons, then atoms, etc. The kinetic energy spread out as well. I assume that the energy lost in the cooling process was transferred into the energy used in expanding, which is why the universe is still cooling, because it is still expanding.

Basically, I'm asking why entropy is increasing if the temperature of the universe is decreasing. Is entropy a function of energy, not temperature then? And if so, then why is it not constant?
Phys.Org News Partner Astronomy news on Phys.org
Quest for extraterrestrial life not over, experts say
Continents may be a key feature of Super-Earths
Astronomers discover first self-lensing binary star system

Register to reply

Related Discussions
String entropy and black hole entropy Beyond the Standard Model 3
increasing entropy vs groundstate Classical Physics 4
How is the entropy of the solar system increasing? Introductory Physics Homework 1
Ever increasing entropy Classical Physics 9