Does cold really exist in thermodynamics?

Question

Just like smoke, smoke is produced by a process, is cold produced by process or is it naturally present in the environment?

Answer 1

Cold is only our perception relative to our bodies. Cold is a term we have used to describe the difference in energy contained in a system or object relative to ourselves.

Typically, we have fashioned devices to measure the energy, or absence of energy, in a system or object and project that measurement for us.

So , yes, cold does exist in thermodynamics as the absence of heat energy.

Answer 2

There is no such thing as cold. Somethings' temperature is simply the average energy of the molecules that make up a substance or gas. When you touch something and you say it's "cold", what you're actually feeling is the difference in energies between your hand and say, a cold piece of ice. If a solid block of nitrogen (extremely cold) could 'touch' a piece of tap water ice, the nitrogen would think the ice is hot just as the ice would 'think' the nitrogen is cold. Hot and cold aren't really entities that something has, only temperature, which is a measure of the average energy the substances' molecules have.

Answer 3

hot and cold do not exist. Matter is can be doing three things gaing energy, losing energy, or staying the same.

Answer 4

Cold is not a specific entity rather it is a lack of moleular movement.

Answer 5

COLD is human perception and is comparative.

Heat, and lack of heat are physical realities.

Answer 6

It's all relative. How can you have heat without cold?

Answer 7

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