He said, well, entropy increases because there are many, many more ways for the universe to be high entropy, rather than low entropy.

The reason why entropy increases is simply because there are many more ways to be high entropy than to be low entropy.

So it's not that entropy must always increase you can get fluctuations into lower entropy, more organized situations.

So positive entropy should make my whole expression more negative, so maybe we should subtract entropy.

Boltzmann explained that if you start with low entropy, it's very natural for it to increase because there's more ways to be high entropy.

When temperature is high, entropy matters a lot.

When temperature is low, entropy doesn't matter.

What he didn't explain was why the entropy was ever low in the first place.

SSL entropy file

Here's a graph that plots the entropies of a whole bunch of sequences.

This is a situation where we're going to be more entropic after the reaction.

So when temperature is high, entropy matters.

Use entropy file

Path to entropy file

Waiting for entropy

But let's say I lose entropy.

You've heard of entropy.

But let's say I lose entropy.

When temperature is high, this less entropic state, they ram into each other, and they'll become more entropic.

So he says I'm not going to do the accent he says, For some reason, the universe, at one time, had a very low entropy for its energy content, and since then the entropy has increased.

The entropy pool ran empty. The key generation process is stalled until enough entropy is present. You can generate entropy e. g. by moving the mouse or typing at the keyboard. The easiest way is by using another application until the key generation continues.

We have delta S, our change in entropy.

SSL egd socket

In this situation, entropy was negative.

That's the region where entropy is low.

We have more disorder, more entropy.

And lastly, to the slightly obscure world of entropy the second law of thermodynamics.

So it seems like entropy matters somewhat.

Let's think of the situation where our delta H is less than 0, and our entropy is greater than 0.

We've seen that entropy is related to the number of particles we have.

So we know that positive entropy is something good for spontaneity.

A high entropy arrangement is one that there are many arrangements that look that way.

The fact that you are born, and then you live, and then you die, always in that order, that's because entropy is increasing.

And this seems, you know, with second law of thermodynamics, if the entropy of the universe goes up.

Such a random jumble of letters is said to have a very high entropy.

So what if we just scaled entropy by temperature?

Information, too, can be measured and compared using a measurement called 'entropy.'

But what if our delta S, what if our entropy goes down?

I mean, I'm not saying the law of entropy is wrong it's not.

And Boltzmann's contribution was that he helped us understand entropy.

If entropy is negative, this also kind of speaks to the idea that if entropy is negative, it kind of makes the reaction a little less spontaneous.

And then if we go to the negative enthalpy, positive entropy, so we're releasing energy, so this is negative, and our entropy is increasing our entropy, we're getting more disordered then this becomes a negative as well.

In fact, this gut instinct is reflected in one of the most fundamental laws of physics, the second law of thermodynamics, or the law of entropy.

This insight that entropy increases, by the way, is what's behind what we call the arrow of time, the difference between the past and the future.

Yet friction produces heat and thus an increase in entropy which measures the amount of energy that cannot be used to perform work and it therefore distinguishes past from future. The increase in entropy the second law of thermodynamics is the only law of nature that makes this fundamental distinction.