[hamdani yusuf (OP)]

If you had spent time learning and thinking, you might know by now.
Instead, you spend time saying stupid things like

In your point of view, everyone who disagree with you is stupid, which is virtually everyone writing in this thread, including Wikipedia authors. Has it ever cross your mind that may be you are the one who made mistakes?

[Spring Theory]

One of the most useful tools in analyzing physics is working in natural units. This basically sets your constants equal to 1 (more to that though). 

Numerically, yes, but you have to transfer the dimensions of your constant to some other quantity, and of course it can only work for one constant at a time.

Set c = 1 = ħ

[Spring Theory]

pressure can be expressed as energy to the fourth power

How do you get this?

Natural units per the constants above set to one means the following:

[Bored chemist]

Wiki is not God.

Of course not. But it represents common knowledge of many contributors, with many of them are expert in their fields. If you disagree with them, at least you need a supporting evidence to show their mistakes.

Or...
https://en.wikipedia.org/wiki/Lie-to-children

[Bored chemist]

In your point of view, everyone who disagree with you is stupid, which is virtually everyone writing in this thread,

OK
That's misrepresentation but...
I'm happy to take a straw poll on that
Who thinks  that HY knows more about science than I do?

[Spring Theory]

Very said to see this thread end up in a pissing contest.  It just reveals what many of you people are here for, trying to prove how much you know about science.  What a farce.

I bend over backwards here trying to help you guys understand concepts and be productive to the topic but the typical response is just an unproductive, smart ass quip.

What a waste of time and effort. You guys deserve neither.

Your welcome.

[hamdani yusuf (OP)]

pressure can be expressed as energy to the fourth power

How do you get this?

Natural units per the constants above set to one means the following:

What's the dimension of temperature then?

Momentum = Mass * Velocity
Momentum = Energy * 1 = Energy
It doesn't seem right

[alancalverd]

Something missing in the above.
[h] = ML²T^-1

[c] = LT^-1


so you can't set both c and h  to a dimensionless unity simultaneously.

[Origin]

I bend over backwards here trying to help you guys understand concepts and be productive to the topic but the typical response is just an unproductive, smart ass quip.

What a waste of time and effort. You guys deserve neither.

Since most of what you bring to the party is pseudoscience, leaving the discussion is no loss.

[Bored chemist]

  It just reveals what many of you people are here for, trying to prove how much you know about science.  What a farce.

Less of a farce than the ones having a contest to show who knows least about it.

[hamdani yusuf (OP)]

Wiki is not God.

Of course not. But it represents common knowledge of many contributors, with many of them are expert in their fields. If you disagree with them, at least you need a supporting evidence to show their mistakes.

Or...
https://en.wikipedia.org/wiki/Lie-to-children

What's temperature, if you have to explain to an adult?

[Origin]

What's temperature,

390 posts and you are still on square one; nice.

[Bored chemist]

What's temperature, if you have to explain to an adult?

We answered that.
You still don't know what temperature is.
It may be possible to deduce something from those to observations.

[hamdani yusuf (OP)]

What's temperature,

390 posts and you are still on square one; nice.

And you haven't contributed meaningfully.

[hamdani yusuf (OP)]

What's temperature, if you have to explain to an adult?

We answered that.
You still don't know what temperature is.
It may be possible to deduce something from those to observations.

Can you summarize it?

[hamdani yusuf (OP)]

I am a little curious about where you are going with this thread.   Is there something you think temperature should be?

I just try to understand what temperature is by relating it with other things I already understood. The description by Wikipedia below requires the understanding of other concepts first. I want to understand how those concepts are related to each other consistently and useful to explain and predict observations and experimental results.

https://en.wikipedia.org/wiki/Temperature
Temperature is a physical quantity that expresses hot and cold or a measure of the average kinetic energy of the atoms or molecules in the system. It is the manifestation of thermal energy, present in all matter, which is the source of the occurrence of heat, a flow of energy, when a body is in contact with another that is colder or hotter. Temperature should not be confused with heat.

International Kelvin scale
Many scientific measurements use the Kelvin temperature scale (unit symbol: K), named in honor of the physicist who first defined it. It is an absolute scale. Its numerical zero point, 0 K, is at the absolute zero of temperature. Since May, 2019, its degrees have been defined through particle kinetic theory, and statistical mechanics. In the International System of Units (SI), the magnitude of the kelvin is defined through various empirical measurements of the average kinetic energies of microscopic particles. It is numerically evaluated in terms of the Boltzmann constant, the value of which is defined as fixed by international convention.[5][6]

Statistical mechanical versus thermodynamic temperature scales
Since May 2019, the magnitude of the kelvin is defined in relation to microscopic phenomena, characterized in terms of statistical mechanics. Previously, since 1954, the International System of Units defined a scale and unit for the kelvin as a thermodynamic temperature, by using the reliably reproducible temperature of the triple point of water as a second reference point, the first reference point being 0 K at absolute zero.[citation needed]

Historically, the triple point temperature of water was defined as exactly 273.16 units of the measurement increment. Today it is an empirically measured quantity. The freezing point of water at sea-level atmospheric pressure occurs at approximately 273.15 K = 0 °C.

The article says that temperature is a measure of the average kinetic energy of the atoms or molecules in the system. But we know that not all kinetic energy of the atoms or molecules are in the form of heat which contribute to the system's temperature. How they move also affects the temperature measurement of the system. Uniform rotation of a solid object can make it have a very high average kinetic energy. But usually it's not called a hot object.

https://en.wikipedia.org/wiki/Heat
In thermodynamics, heat is energy in transfer to or from a thermodynamic system, by mechanisms other than thermodynamic work or transfer of matter.[1][note 1]

Like thermodynamic work, heat transfer is a process involving more than one system, not a property of any one system. In thermodynamics, energy transferred as heat contributes to change in the system's cardinal energy variable of state, for example its internal energy, or for example its enthalpy. This is to be distinguished from the ordinary language conception of heat as a property of an isolated system.

The quantity of energy transferred as heat in a process is the amount of transferred energy excluding any thermodynamic work that was done and any energy contained in matter transferred. For the precise definition of heat, it is necessary that it occur by a path that does not include transfer of matter.[2]

Though not immediately by the definition, but in special kinds of process, quantity of energy transferred as heat can be measured by its effect on the states of interacting bodies. For example, respectively in special circumstances, heat transfer can be measured by the amount of ice melted, or by change in temperature of a body in the surroundings of the system.[3] Such methods are called calorimetry.

At least I found an adult in the room with whom I can discuss scientific problems more seriously. Here's what I get so far.

In principle, I agree with Wikipedia article which says that temperature is a measure of the average (internal - as Alan mentioned) kinetic energy of the atoms or molecules in the system. Hence we need to exclude external kinetic energy, such as uniform translation and rotation of the particles. Otherwise we will have to say that ISS has high temperature.

An object can absorb energy from other objects, and transform it into some other forms of energy with or without change in temperature. If it's purely transformed into potential energy, then the object's temperature doesn't change. If it's purely transformed into external kinetic energy, then the object's temperature doesn't change either.

Some kind of movements involve both kinetic and potential energy. Let's have a 1 kg ball at 1 m height in 10 m/s² gravitational acceleration. It has 10 Joule potential energy, and 0 kinetic energy. If it then fall freely to the floor, the potential energy starts to convert into kinetic energy, with constant total energy. When it hit the floor, the potential energy is 0 while the kinetic energy is 10 Joule.
Let's make the ball and the floor make perfectly elastic collision. On average, the ball has 5 Joule of kinetic energy and 5 Joule of potential energy.

Mass and spring is another example which is more closely related to temperature.

If 2 Joules of energy is absorbed by a mass-spring system, on average 1 Joule will be in the form of kinetic energy, while 1 Joule is in potential energy.
For comparison, if the mass is put into a perfectly elastic box without attached to spring, 2 Joules of energy will be in the form of kinetic energy and 0 potential energy.
As analogy for temperature, the mass-spring system has twice heat capacity as the spring-less system. We can add the same amount of energy to both systems, but only half is manifested as kinetic energy in the first system, which is comparable to lower increase of temperature.

The widest range of temperature measurement methods I know is by ideal gas law, which can be approached practically using monoatomic noble gases, although they start to deviate at high enough temperature where the gas starts to ionize. The electromagnetic interactions makes the energy no longer strictly in kinetic form.

[Bored chemist]

What's temperature, if you have to explain to an adult?

We answered that.
You still don't know what temperature is.
It may be possible to deduce something from those to observations.

Can you summarize it?

What would be the point?

[hamdani yusuf (OP)]

What's temperature, if you have to explain to an adult?

We answered that.
You still don't know what temperature is.
It may be possible to deduce something from those to observations.

Can you summarize it?

What would be the point?

So you can contribute meaningfully to the discussion.

[Bored chemist]

In principle, I agree with Wikipedia article which says that temperature is a measure of the average (internal - as Alan mentioned) kinetic energy of the atoms or molecules in the system.

How many times must I point out that the vibrational, rotational  and electronic energies are also involved?
If they don't all agree (i.e. if the equipartition principle isn't obeyed) then the temperature is not defined.

It's possible to obtain a sample of a gas where most of the atoms are in an excited state.
If you measure the temperature of that gas by looking at the translational kinetic energy you will get some answer.
If you then put the material in a closed insulated container, the atoms will collide with eachother and the extra energy from that excitation will be transferred into kinetic energy.
If you measured the temperature (as determined from the kinetic energy), it would have gone up.

You would have had a closed system where the temperature spontaneously rose.

And that's a breach of the laws of thermodynamics.

So, Alan is wrong, and so is the Wiki article.
It's not usually an important element of temperature.
So leaving it out is one of the lies we tell to children.

[Bored chemist]

What's temperature, if you have to explain to an adult?

We answered that.
You still don't know what temperature is.
It may be possible to deduce something from those to observations.

Can you summarize it?

What would be the point?

So you can contribute meaningfully to the discussion.

You first...