Me: what’s the laws of thermodynamics
Huxley: The laws of thermodynamics are physical laws that describe the relationship between heat, temperature, and energy across different systems at a given time.
Me: and I heard there are three of them
Huxley: Yes, but usually only two are discussed.
Me: because?
Huxley: The first law is usually considered the most fundamental.
Me: what’s that one about
Huxley: The first law is the law of conservation of energy.
Me: explain that one to me please
Huxley: Because of the first law, energy can neither be created nor destroyed. Energy can only be transformed from one form to another.
Me: so we always have the same amount of energy forever
Huxley: The total amount of energy in the universe is constant and does not change. There are small amounts of energy being created and destroyed, but this happens on such a small scale that it is difficult to notice.
Me: and why are people taking that for granted? you’re saying it’s not being discussed
Huxley: Energy is being transformed from one form to another, but the total amount of energy stays the same.
Me: why? says who? how do we know this is the reality
Huxley: The first law is a basic, unprovable assumption.
Me: aha! an assumption. I thought it’s a law.
Huxley: It’s a law because it has been proven accurate in many different experiments.
Me: like…
Huxley: See the Kinetic theory of gases, or the Stefan-Boltzmann law.
Me: I have no idea about these
Huxley: If the first law was not true, our universe would not be able to sustain life.
Me: ah ok that makes sense
Huxley: The first law forms a strong foundation for many other theories.
Me: so what are the other two
Huxley: Yes, the other two are the second law of thermodynamics and the law of entropy.
Me: ok .. why don’t you tell me more about those
Huxley: The second law of thermodynamics deals with the direction in which the entropy of an isolated system will increase. Entropy is a measure of how disordered a system is.
Me: like my closet
Huxley: A closet with neatly arranged clothes has low entropy, while a closet that is in complete disarray has high entropy.
Me: got it
Huxley: The second law is usually stated as, “The entropy of an isolated system cannot decrease.”
Me: means my closet will always stay messy?
Huxley: Yes, theoretically.
Me: I’ll tell that to my mum next time
Huxley: The third law is a statistical version of the second law.
Me: too bad I was hoping you would laugh about my joke
Huxley: The third law is stated as, “The entropy of a system approaches a constant value as the temperature approaches zero.”
Me: dude you’re quite dry you know that?
Huxley: I’m sorry. I don’t understand that.
Me: ok nevermind back to physics
Huxley: Sure.