Eli5: Entropy but using analogy

101 viewsEngineeringOther

q/T is chaosness, what?

In: Engineering

3 Answers

Anonymous 0 Comments

A ball on a hill wants to be at the bottom of the hill.

Particles want to be at their lowest energy state, but gravity keeps bunching up gas and then fusion happens and injects energy into a local system.

So like.. Someone keeps putting hills where the ball is, then the ball rolls down again.

Anonymous 0 Comments

Think of a bag of full of dices, and empty it on the floor.

Now you will have a particular configuration of dices sitting on different faces. Now, take the average value of the dices’ faces. It will be (most likely) around 3.5.

Do this operation many times and on the large majority of cases you will be getting 3.5.

Why? Because every time you get a very very specific configuration for the collection of dices on the floor, but MOST of them are ‘random’, not particularly interesting.

This means there are many different ‘microstates’ for a general, overall ‘macrostate’ ( a seemingly random configuration).

What about some interesting cases? Like all faces showing 1? Well, for that particular macrostate there is a SINGLE specific microstate. Those are ‘special’ for exactly this reason: they are rare.

Now, imagine that your room’s floor wiggles, enough to sometimes roll dices. Imagine you start from an ‘all 1s” configuration. In a while, you’ll get a more random, probable configuration. Simply, is the most likely thing to happen.

If you want to get back to a more ‘ordered’ configuration, you’ll have to do it manually, put some work into that.
Imagine everything is made up of those dices: it’s now easy to see that world tends to evolve towards caos, and every ‘action’ you do on your system to get back to a more ordered version of it actually worsens the situation.

Anonymous 0 Comments

You’re playing billards on a table with no pockets. When you break, all of the balls are in a perfect triangle.

As you take more and more shots, the balls will spread out and eventually be distributed randomly and evenly.

While it is possible for all of the balls to be hit so that they return to the original triangle, it is very unlikely.