Do hot & cold have limits?

Question

Could you got a gazillion below absolute 0?
Could you go beyond an extreme plasma state?

If something is hot, but you add extra energy, it has to heat up, no matter how hot it already is, right?

Do hot & cold have infinite boundaries that we can't fathom or reach?

Answer 1

I don't think there is an upper bound for temperature.
But there is alower. 0K or -173°C or something.
Heat is just an interpretation of atomar movement. At zero Kelvin movement stops. This represents the lowest possible temperature since there is no negative movement.
I also belive that everything which cools down to absolute zero will dissapear (on a trivial level. It in fact will onyl become an almost infinite small lump of elementar particles stuck together. Little size with hell of gravity - comparable with a black hole.) since the atomar centrifugal forces are overcome by the attration of the atoms' cores and everything will collapse.

Answer 2

There's no such thing as "cold". Cold is the relative absence of heat. What you feel as cold is heat leaking away from you into a less heated area.

Heat is a measure of the excitation of atoms. The more heat, the more energetically the atoms vibrate. When a solid melts, the molecular energy has exceeded the material's ability to maintain a crystal configuration. When it vaporizes, it is too energetic to stay liquid. And when it reaches a plasma state, it loses it's molecular cohesion and becomes separate atoms. The highest possible temperature a material could reach would be the point at which its atomic structure breaks down and it dissolves into quarks. I don't know if that's a consistent temperature for all materials or not.

The coldest temperature would occur when all molecular energy is gone. That's known as Absolute Zero, or Zero Degrees Kelvin (roughly -473 degrees F, -273 degrees C). We can get close to that temperature by removing heat from a material, but it's like perfect vacuum or the speed of light. You can never quite get there. The tools removing the heat have heat themselves, preventing perfect cold.

Answer 3

Before answering your answer, let me tell you what is heat in a scientific way.
Heat, is the microscopic movement of the atoms and molecules of a material. The more microscopic movements, the more heat and the higher temperature. So, when you warm something up, you will unintentionally increase the microscopic movements of the thing. Now, let's see what's cold: Cold actually doesn't have a certain meaning in Science, but, we can say it's the lack of heat, so we don't have something existing in the real world called "Cold", the more cold something is, the less microscopic movements it has.

Now, it's time for answer (If you already haven't realized):
If we seize the heat of a material continuously, we can say we'll reach a point that there's no microscopic movements of the atoms and the molecules, that's -273.15 Celsius degrees. Freezing, isn't it? So, the limit for coldness exists, but the limit for heat doesn't. (Actually you can warm things up till their atoms and molecules haven't broken apart due to very quick movements (very hot temperature!) and that depends on the features of the material molecular structure.

Answer 4

cold: yes absolute zero, 0 kelvins that is not possible to reach and is -273.15°C
Scientist with different technique can reach few millionth grades just over 0K.

hot: no billion degrees are common in nuclear fusion in experimental reactors and the Z-machine can reach temperatures in excess of 2 billion kelvins (GK, 109 K) or 3.6 billion °F. This temperature, which enables a 10 to 15% efficiency in converting electrical energy to soft x-rays, was much higher than anticipated. Thus far, it is currently the highest man-made temperature ever achieved.

Answer 5

Cold has a limit [the absence of all heat] there has to be a maximum temperature but that would be pure speculation.
Probably where matter would revert to a quantum state.

Answer 6

We can't go below 0K nor we have the methods to do so nor it is possible....
Ya! extreme plasma state is what we refer to planck time state....
In my opinion u can think the highest the universe coud have viewed is nin the planck era......refer -: string theory...