What is the source of cold in the universe?

originally posted by: F4guy

originally posted by: SirHardHarry
a reply to: Willtell

we know not the physical source of cold...
Just saying its a lack of heat doesn't answer the question, I'm afraid

There is no physical "source." It's the absence of.

Exactly/
Asking about the "source" of cold is like asking, "What is the source of silence?" Or, "What is the source of darkness?"

Pretty good but I'll easily refute your analysis

One, the fact of the matter is that there are some instances we can clearly observe where cold comes from, such as in a freezer--the frozen water.

It is NOT based on a lack of heat…


The question is WHERE COLD comes from not how it is created---big difference


Your other idea of silence. Silence can come from many things other than no speech since an animal or object can make noise numerous ways not just speech…


Darkness is also a possibility of a directional path where one can define it going in a certain direction therefore it is not just a simple darkness comes from a lack of light.

It all depends on what you define darkness as, a noun or a verb

Another reason why saying cold comes from a lack of heat doesn’t make sense is because the constituents of cold are already there before it is occupied by heat.


That’s like saying empty space comes from a lack of filling in up


Science has discovered that space is an entity not merely an abstract or existential reality

a reply to: Willtell

One, the fact of the matter is that there are some instances we can clearly observe where cold comes from, such as in a freezer--the frozen water.

Heat energy moves from hot molecules which have more energy to less-hot molecules which have less energy. A gas under pressure also has a higher temperature than a gas under vacuum. In a freezer, freon is pumped to high pressure, so it gains in temperature. A fan forces room air through a heat exchanger where the freon loses much of its heat energy to the air. A pressure valve then causes the freon to be under a vacuum, so its temperature drops. Another fan forces air through another heat exchanger where the air loses heat energy to the freon. That air is forced into the freezer compartment where food loses heat energy to the air.

There is no introduction of 'cold' in a freezer. It simply uses pressure to change the temperature of the freon so heat can be moved from the freezer compartment to the surrounding air, despite the surrounding air having a higher temperature.

TheRedneck

One, the fact of the matter is that there are some instances we can clearly observe where cold comes from, such as in a freezer--the frozen water.

It is NOT based on a lack of heat…

The energy in the water was transferred from water by the refrigeration. It didn't happen own it's own by the laws of thermodynamics.

As soon as the ice is taken out of the box, it starts warming as the energy from warmer air touches it. Some energy from the warmer air is transferred to the ice.

The temperature is basically the level of energy in the atoms.

a reply to: Willtell

Temperature comes from moving particals at the quantum level

'Temperature is a measure of the average energy level of the particles in a substance. Both hot and cold water are made up of moving particles, some moving quickly, and some moving slowly. But on average, the particles move faster in hot water than in cold water.' - google.

So the faster the particals move the hotter the object gets. The slower they move the colder it gets.

For a better understanding i suggest google or post the question in the ask a physicist thread in the science and tech forum.


Coomba98

a reply to: Willtell

what utter twaddle :

One, the fact of the matter is that there are some instances we can clearly observe where cold comes from, such as in a freezer--the frozen water.

that is so wrong - it hurts - try touching the rear heat exchanger on a freezer " cold " has not come from somewhere - the heat has been transfered to another medium

try BASIC thermodynamics

" cold " is simply an abstract - this has been explained to you several times - but yet you persist in mental mastrubation

Research the 2nd law of thermodynamic and entropy. It will become more clear, hopefully.

edit:

Think of cooler as "less energy".

originally posted by: TheRedneck
a reply to: Willtell

One, the fact of the matter is that there are some instances we can clearly observe where cold comes from, such as in a freezer--the frozen water.

Heat energy moves from hot molecules which have more energy to less-hot molecules which have less energy. A gas under pressure also has a higher temperature than a gas under vacuum. In a freezer, freon is pumped to high pressure, so it gains in temperature. A fan forces room air through a heat exchanger where the freon loses much of its heat energy to the air. A pressure valve then causes the freon to be under a vacuum, so its temperature drops. Another fan forces air through another heat exchanger where the air loses heat energy to the freon. That air is forced into the freezer compartment where food loses heat energy to the air.

There is no introduction of 'cold' in a freezer. It simply uses pressure to change the temperature of the freon so heat can be moved from the freezer compartment to the surrounding air, despite the surrounding air having a higher temperature.

TheRedneck

Please don’t ever try to fix my freezer, you are so wrong on how it works. A freezer user a compressor to compress a refrigerant (Freon is not used anymore due it being bad for the ozone layer), the outside heat exchanger just cools the compressed gas because the action of compressing the gas creates heat and it needs to be cooled for the system to provide a temperature drop sufficient enough to freeze the contents of the freezer. Gas WILL freeze if it is compressed or in a vacuum, that is why a refrigerant with a very low freezing temperature is used. The compressed refrigerant on the high pressure side is then released into a low pressure side by means of a choke/regulator and the pressure drop creates a cooling effect in a second exchanger inside the freezer. This is the same reason why high pressure oil and gas wells have to use a line heater to increase the temperature before dropping the pressure to a workable level for processing, otherwise the gas/oil would just freeze solid and bust the pipes.

Heat always moves from hot to cold and there is never a cold to hot transfer. Cold is just a lack of heat.

originally posted by: Willtell

However, what is the ultimate source of cold?

www.space.com...

Here's what’s going on: Most of the gas in space is too thin to warm anything up. Essentially, there are not enough gas particles to "bump" into and transfer heat to an object. So if you were in space, but shielded from the sun, you would radiate away nearly all your heat pretty quickly and cool to the cosmic background temperature.

Cold is a sensation, not a phenomenon. It is caused by -- please pay attention -- the transfer of heat from your body to other bodies or to the surrounding medium. Cold, unlike heat, is not a thing. It's just a feeling.

wow this thread is full of experts of madness. Cold is also heat if you've ever taken a science class. It's all simply temperature. And whether or not it's 'heat' or 'cold' is completely relative to the observer. -20f is still hot to -200f. It's completely dynamic and relative. All temperature is heat regardless if it's cold or warm.

Your Newtonian physics sucks. The cold is not just a lack of. Yin is as real as yang.
The source of cold is heat. Heat is expanding thus cooling. The source of expansion is gravity whis is as dual as every other force. Mark my words here and look who'll steal my Nobel prize. Objects known as black holes expand the space. The temperature drops when the gas (universe) expands.
Newton - An object at rest stays at rest... means that the state of equilibrium is an expanded universe - which is the starting point rather than a big bang. It's probably happening both at once without the beginning and the ending.

My Mrs would contribute a large portion of it i'd say.

a reply to: Willtell

we can clearly observe where cold comes from, such as in a freezer--the frozen water.

It is NOT based on a lack of heat…

That's exactly how a freezer or fridge works.

It removes heat.

originally posted by: roadgravel
Research the 2nd law of thermodynamic and entropy. It will become more clear, hopefully.


Think of cooler as "less energy".

Which brings up the notion of 'Absolute Zero... the state in which a volume of space has not energies or movement... we can get close to Absolute Zero but not achieve it because there are too many, far flung, random particles or energies (including those theoretical Strings of String-theory that are present....

on the other hand there is not a thing known as Absolute Hot
Ergo, Absolute Zero, is the natural state of a pre-Cosmos, pre-matter existence




in a related thought... the Angels and Demon spirits of the Spiritual realm... probably consider the physical universe as like a bowl of thick gumbo...

their's is a Absolute Zero Reality, where no heat or motion crowds up the landscape (note how hauntings are always 'cool spots')...

the Aura which surrounds Angelic beings is the repulsion of created matter/energies from the Angels immediate vicinity, so that they may travel in Absolute Zero temp. & the Absolute Vacuum of space


hope that helps

a reply to: Grayarea

Please don’t ever try to fix my freezer

Deal.

You just said the same thing I did using different words.

TheRedneck

Conduction, convection and radiation.

Here is some Q & A with NASA on temperature and radiation in space.

Most heat exchange in space is by longer wave EM radiation.

Maybe the absolute zero is the state of highest energy - but the Yin energy, the world of superfluid superconductors and negative electrons. Stillness as a way to speed of light travel. I don't see a reason to search for evil when it's rather female.
Btw. are they trying to destroy the universe in CERN or to create anti-matter, some dark anti-verse? Eh! Isn't it interresting that they need cooling to speed up the matter?

The Universe is cold because of entropy. Cold is the lack of heat, the "source" of cold would be the infrared radiation that bled away into space. Inevitably all heat will bleed away into space. It's only a matter of time.

Wikipedia has a couple interesting articles about Entropy and Heat death of the universe if you're interested.