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The first law of thermodynamics

[itex] dU=dQ-dW[/itex]

could be expanded to

[itex] dU=TdS-PdV[/itex]

where

U is internal energy,

T is temperature,

S is entropy,

P is pressure, and

V is volume.

I am trying to understand the terms one by one in plain English.

So:

V is how big the container is,

P is how hard the container is pushing the system,

U is internal energy of system,

T is how willing the system want to give out heat, and

S is how evenly distributed the thermal energy is.

Plus:

[itex]PdV[/itex] is energy (loss) due to the system pushes out the surroundings to make itself a room, and

[itex]TdS[/itex] is energy due to the particles jumping around.

Is there misconception? and

I don't understand why [itex]TdS[/itex] would be a form of energy, why?

[itex] dU=dQ-dW[/itex]

could be expanded to

[itex] dU=TdS-PdV[/itex]

where

U is internal energy,

T is temperature,

S is entropy,

P is pressure, and

V is volume.

I am trying to understand the terms one by one in plain English.

So:

V is how big the container is,

P is how hard the container is pushing the system,

U is internal energy of system,

T is how willing the system want to give out heat, and

S is how evenly distributed the thermal energy is.

Plus:

[itex]PdV[/itex] is energy (loss) due to the system pushes out the surroundings to make itself a room, and

[itex]TdS[/itex] is energy due to the particles jumping around.

Is there misconception? and

I don't understand why [itex]TdS[/itex] would be a form of energy, why?

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