Exploring the Heat Death Theory: What is It and How Does it Work?

In summary, the conversation discussed a theory about civilizations creating excess heat, leading to their demise. However, it was argued that this theory is not applicable to ancient civilizations and that it may be more of a science fiction concept. The conversation also touched on estimating the amount of heat generated by a city like New York and the concept of "heat death" in the universe. Overall, the conversation did not provide a concrete explanation of the theory and its validity.
  • #1
Lrdmora
26
0
I read about this once and then forgot where I read it, very simplified the theory goes like this:

Intelligent beings create heat.
Most items in a civilized culture create heat ie light bulbs, computers, etc.
At some point a civilization will create more heat than can be dissipated and eventually it will lead to death of that civilization.

I think that I missed something in there. Can someone tell me what this theory is and how it works? Thanks![?]
 
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  • #2
I have never heard of such a "law" applied to civilizations, unless "heat" has some much broader meaning the that given it by Physics. If I were to apply this rule physically to anicient civilizations I do not think it would apply. The Roman Empire did not fall to excess heat, if fell due its inablility to defend its boarders from foreign invasion. If anything Rome ran into problems of insuficient heat, they striped all easily accessable fuel for miles around the city.

Now if you wish to redefine what is meant by heat, perhaps you could make an argument. As far as a pure physical argument goes I see no validity to what you are saying.
 
  • #3
Bigger scale

I think he was talking on a larger scale. For instance if you had a civilization that was planet bound but highly advanced and overpopulated. The heat created by such a civilization would surpass the bounds of any heat dissipation. Sort of like global warming only on a different scale. I probally read it wrong that's why I posted to see if anyone had heard of that before. Seems a little suspect eh? Maybe you can tell me how heat dissipates or where it goes? Does anyone know how much heat is generated by for instance New York City?

Thanks a ton!
 
  • #4
How can you make such projections? First you must project the existence of the civilization, then you must project its inablility to regulate energy. Sounds like science fiction to me.

To get a handle on the amount of heat produced by NYC you would need to know the amount of power consumed in a given period of time. This would include, electrical, gasoline, the number of humans, cats, dogs ect. Seems like it would be hard to get even a rough estimate.

Another way would be to obtian an infrared signature from space.
 
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  • #5
Okay, I give up.

Thanks for responding, like I said it was something I read a while back and could have come from a science fiction book for all I know. I appreciate your responding though! Have a great week!
 
  • #6
I think that the heat would dissipate much faster then it could accumulate. We are not talking about an enclosed system. Heat escapes the Earth everyday and dissipates into space.:smile:
 
  • #7
I thought "heat death" referred to the final condition of the universe in a smaller than critical density initial matter distribution. Terms like "distribution" become meaningless at extremes, but essentially all matter evaporates into energy at the event horizon of black holes as space expands into a thin soup of electrons.
 
  • #8
Heat death just refers to a closed system in thermal equilibrium and if the universe ever does reach thermal equilibrium that would be the heat death of the universe.
 

What is the heat death theory?

The heat death theory, also known as the "ultimate fate of the universe", is a scientific concept that suggests that the universe will eventually reach a state of maximum entropy, also known as "heat death". This means that all available energy will be evenly distributed and no work can be done, resulting in a uniform and lifeless state.

How does the heat death theory work?

The heat death theory is based on the second law of thermodynamics, which states that the total entropy of a closed system will always increase over time. As the universe expands, the available energy will become more and more spread out, making it impossible for any useful work to be done. Eventually, all stars will burn out and all matter will decay, leading to a state of maximum entropy.

What evidence supports the heat death theory?

There are several lines of evidence that support the heat death theory, including observations of the expansion of the universe, the behavior of black holes, and the measurement of cosmic microwave background radiation. These all point towards an eventual state of maximum entropy and the end of all life in the universe.

Can the heat death theory be prevented?

As of now, there is no known way to prevent the heat death of the universe. Some theories suggest that a "big crunch" could occur, where the universe collapses back in on itself and potentially restarts the cycle. However, this is still just a theory and has not been proven.

What are the implications of the heat death theory?

The heat death theory has profound implications for the future of our universe. It suggests that all life, including human life, will eventually come to an end. It also raises questions about the purpose and meaning of existence, as well as the potential existence of other universes beyond our own.

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