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Thought of the day_14_Heat Vs Temp

What is the difference between heat and temperature?

Note by Rohit Gupta
2 years, 3 months ago

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Heat is a form of energy, while temperature is not. Temperature is a physical quantity which determines the degree of hotness or coldness of a body.

Swapnil Das - 2 years, 3 months ago

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What do you mean by degree of hotness or coldness??

Rohit Gupta - 2 years, 3 months ago

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Measure of or more precisely, extent of.

Swapnil Das - 2 years, 3 months ago

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@Swapnil Das dont you think that hotness and coldness is a matter of sensation and will actually depend upon the temperature difference..

Rohit Gupta - 2 years, 3 months ago

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@Rohit Gupta Hmm.. I agree with you, Sir!

Swapnil Das - 2 years, 3 months ago

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@Swapnil Das So what is temperature??

Rohit Gupta - 2 years, 3 months ago

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@Rohit Gupta Average kinetic energy of molecules ?

Swapnil Das - 2 years, 3 months ago

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In a nutshell, Heat (precisely, heat energy), as we all know, is a very common physical quantity, whereas temperature is a measure of this heat energy! =)

Yogesh Verma - 2 years, 3 months ago

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Temperature of an isolated system can be defined, will it give us the measure of heat energy content in the system??

Rohit Gupta - 2 years, 3 months ago

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Vibrational kinetic energy of molecules in a body gives the temperature, more energy \(\Rightarrow\) more temperature.

And flow of that energy is heat.

Kushal Patankar - 2 years, 3 months ago

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What is the temperature of vacuum??

Rohit Gupta - 2 years, 3 months ago

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I guess temperature can not be defined somewhere there is no matter.

Kushal Patankar - 2 years, 3 months ago

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@Kushal Patankar What if there are radiations but no matter??

Rohit Gupta - 2 years, 3 months ago

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@Rohit Gupta Radiations can heat up objects but in this case there is nothing to get heated.

If you provide heat through radiations into a vacuum , it will not affect the vaccum, but if you put a thermometer there it will show some reading but that is not the temperature of vaccum.

I am not objecting that vaccum can not contain energy but temperature, nah 😔

Kushal Patankar - 2 years, 3 months ago

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@Kushal Patankar The temperature of outer space is zero or not defined??? Although google says that it is around 3kelvin..!!

Rohit Gupta - 2 years, 3 months ago

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@Rohit Gupta Ya its 2.7 Kelvin

Swapnil Das - 2 years, 3 months ago

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@Swapnil Das so is there any matter or vacuum.. ???

Rohit Gupta - 2 years, 3 months ago

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@Rohit Gupta Minute amount of matter, Super high Vacuum can't be attained.

Swapnil Das - 2 years, 3 months ago

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@Swapnil Das Do you mean to say that, there doesn't exist a single point is the space where there is no matter (radiations are there)

Kushal Patankar - 2 years, 3 months ago

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@Swapnil Das Can you quote any reference which says that absolute vacuum does not exist..!!

Rohit Gupta - 2 years, 3 months ago

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@Rohit Gupta Such a vacuum will be of no temperature.

But as you said and I too read about it, bigbag added some background energy to universe and a temperature of 3° above absolute zero.

Above two statements contradict.

So not possible to create such a vacuum.

Kushal Patankar - 2 years, 3 months ago

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@Rohit Gupta I read it up in an IUPAP article, in the definition of super high vacuum.

Swapnil Das - 2 years, 3 months ago

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