In intergalactic space, is there a temperature? Where would it come from? Just curious.

Just aman

Cosmic background radiation.

Is there any natural space in the universe at 0 deg. Kelvin?

Just aman

Probably not, that would mean NO energy right?

Since indications by experiment are that matter at 0 Degrees K or no energy will collapse on itself into a singularity and Black holes with incredible energy can meet the same definition, then are they close to the same thing but from different directions? Maybe mini-black holes are just really cold.

Just aman

Would an empty universe have a temperature? Wouldn't it need some energy to maintian its dimensions? I think it would have to be just above 0 kelvin.

Just aman

Would an empty universe have a temperature? Wouldn't it need some energy to maintian its dimensions?

 

Great question, I'll see if I can look it up. Wouldn't be able to say off the top of my head.

Deep space has a temperature of 2.7k i believe, which is, as stated above, due to the cosmic background radiation

Isn't "heat" a measure of molecular movement? Or is that "temperature"?

both?

 

temp is measure of average KE of particles

 

heat is a type of energy related to motion of particles

Cosmic background radiation obviously exists, but exists where there are no particles, so how could both only apply to particles?

Originally posted by fafalone

Cosmic background radiation obviously exists, but exists where there are no particles, so how could both only apply to particles?

 

Heat is a form of energy

 

It can be transmitted through space

 

Waves transfer energy from one point to another

 

I think we may be getting into the territory of wave/particle duality thinking.

oops forgot to add

 

cosmic background radiation is microwave radiation

Originally posted by Ragnarak

 

Heat is a form of energy

 

It can be transmitted through space

 

Waves transfer energy from one point to another

 

I think we may be getting into the territory of wave/particle duality thinking.

 

 

That's what I was asking. The difference between heat and temperature.

Originally posted by fafalone

 

 

That's what I was asking. The difference between heat and temperature.

 

heat is the transfer of energy due to a change in temperature

 

ie. convection, radiation, etc

 

I think that's the simplest way to look at it.

 

 

ps. why can't we delete posts? i accidently quoted this one instead of editing it

Originally posted by Ragnarak

 

ooops

I thought the background radiation came from a hydrogen ion cloud expanding at the edge of our universe. The ions still have the heat of existance and a temperature that keeps them from collapsing into singularities. Is the other side a cold singularity or does it have energy to maintain the 4 dimensions?

Just aman

If you subscribe to the most popular intrepretation of quantum physics, the number of dimensions and the number of universes is infinite.

I say, IF you subscribe.....

I subscribe to the quantum physics that leads you to finding that there are 26 dimensions.

Originally posted by fafalone

I subscribe to the quantum physics that leads you to finding that there are 26 dimensions.

 

I thought it was 10 nowadays? Assuming we're talking about M-theory here.

 

And don't forget Zero Point Energy, y'all.

It depends on how you look at it; as the theory goes it may be possible to simplify, but we're definately not certain yet.

Originally posted by fafalone

Cosmic background radiation obviously exists, but exists where there are no particles, so how could both only apply to particles?

I was under the impression that the microwave background is made of particles. These being the photons that mark the time when the Universe became "transparent" to radiation (apprx. t=300,000 years. if my memory serves).

 

kind regards

Originally posted by Ragnarak

ps. why can't we delete posts? i accidently quoted this one instead of editing it

 

Its is a pain when you click quote instead of edit. Just use "back page" on your browser.

 

kind regards

wouldn't shooting air into space cause liquid nitrogen and liquid oxegen be formed?

No, it would cause gaseous nitrogen and oxygen to form since the molecules will spread out as far as possible.