/sci/ - Science & Math » Thread #12498165

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Anonymous Wed 23 Dec 05:01:16 2020 No.12498165 View Reply Original Report

Quoted By: >>12498209 >>12498240 >>12498992 >>12499508 >>12499573 >>12503425 >>12503483 >>12503485 >>12503575 >>12505827

What the fuck is entropy? Why is the universe draining my energy 24/7?

Anonymous

Anonymous Wed 23 Dec 2020 05:14:06 No.12498197 Report

Quoted By: >>12498201 >>12498232 >>12498293 >>12498914

Unfuckingreal. I say this with the utmost earnestness in my heart: I hope you die a horrifying painful excruciating death, preferably due to cancer over the span of a decade. I hope I never have to read anything written by you ever again. I hope you turn out to be infertile and that your entire bloodline comes to an end with you, you pathetic piece of excrement political traveller! I wish I could go back in time and shoot moot square between the eyes when he decided to reinstate /pol/. Fuck you and fuck all your acquaintances up to 2 hops away, in case your retardation propagated to them. Never post in my board again.

Anonymous

Anonymous Wed 23 Dec 2020 05:16:17 No.12498201 Report

Quoted By:

>>12498197
I wish I didn't have to pay taxes for your shitty PhD but then again we can't always get what we want

Anonymous

Anonymous Wed 23 Dec 2020 05:19:14 No.12498209 Report

Quoted By: >>12498229

>>12498165
>>12498165
If I throw 100 coins into a box, and throw the box down a cliff, are they more likely to end up completely stacked by year from earliest mint to latest mint, or in literally any other position? By chance alone, its the latter.
That's entropy baby.

Anonymous

Anonymous Wed 23 Dec 2020 05:25:37 No.12498229 Report

Quoted By: >>12498230 >>12498242

>>12498209
But what causes it

Anonymous

Anonymous Wed 23 Dec 2020 05:27:17 No.12498230 Report

Quoted By: >>12498232 >>12504036

>>12498229
God's hatred

Anonymous

Anonymous Wed 23 Dec 2020 05:28:57 No.12498232 Report

Quoted By: >>12498238

>>12498230
Nice btw is >>12498197 a copypasta

Anonymous

Anonymous Wed 23 Dec 2020 05:32:42 No.12498238 Report

Quoted By: >>12498248

>>12498232
Yes but I'm not that anon

Anonymous

Anonymous Wed 23 Dec 2020 05:33:29 No.12498240 Report

Quoted By:

>>12498165
entropy is the answer to your question, why all the shit in your room doesn't disappear but grows to an even bigger pile

Anonymous

Anonymous Wed 23 Dec 2020 05:33:49 No.12498242 Report

Quoted By: >>12498328

>>12498229
simple statistics

there are more arrangements that are considered "disordered" than "ordered" so the universe will naturally trend to disorder

Anonymous

Anonymous Wed 23 Dec 2020 05:35:15 No.12498248 Report

Quoted By:

>>12498238
There is nothing pol related about my question so idk why I got that

Anonymous

Anonymous Wed 23 Dec 2020 05:58:48 No.12498293 Report

Quoted By:

>>12498197
You sound upset.

Anonymous

Anonymous Wed 23 Dec 2020 06:14:21 No.12498328 Report

Quoted By: >>12498923 >>12499496 >>12500707 >>12504042

>>12498242
>there are more arrangements that are considered "disordered" than "ordered"
OK, but what objectively determines what states are more ordered than others?
If we're talking about completely random arrangements, any sequence is just as probable as any other, whether it looks "orderly" to us or not.

El Arcón

El Arcón Wed 23 Dec 2020 06:18:46 No.12498337 Report

Quoted By:

It's not really entropy. I don't feel any stupider now than I used to. You know how I always kept leaving all the fine details about calculations out of my papers and just focusing on the fundamental principles? Right now is pretty much the first time I've looked at any of this stuff in about ten years, other than a few glances, and it's like you're criticizing me for not having the same fluency in the language as someone who's been doing it every day all along. It's like of you learn Spanish and become fluent but then don't speak it for ten years. It will take you a while to get back into the mindset of the grammar, not to mention recalling the vocab, and only a ignoranus is going to blame brainrot as the cause for not being able to speak as well as someone who's been living in Mexico.

Anonymous

Anonymous Wed 23 Dec 2020 12:34:23 No.12498914 Report

Quoted By:

>>12498197
Hey now... sometimes /pol/ has some pretty good discussions.

Anonymous

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Anonymous Wed 23 Dec 2020 12:38:45 No.12498923 Report

Quoted By: >>12499101

>>12498328

Anonymous

Anonymous Wed 23 Dec 2020 12:49:11 No.12498941 Report

Quoted By: >>12499429

Is there a word for an analogy which makes something less understandable?

Anonymous

Anonymous Wed 23 Dec 2020 13:23:39 No.12498992 Report

Quoted By:

>>12498165
Consider a probability distribution p_1, ..., p_n
-log(pi) is can be interpreted as a degree of surprise - the lower the probability the higher the surprise
Entropy is the expected/mean surprise of the distribution.
The least informative the distribution, the higher the entropy.
Entropy is maximum when all p_i are equal (uniform distribution)

This gets generalized for infinite/continuous distribution in pretty much the same way.

Anonymous

Anonymous Wed 23 Dec 2020 14:14:32 No.12499101 Report

Quoted By:

>>12498923
Ok?

Anonymous

Anonymous Wed 23 Dec 2020 16:48:20 No.12499429 Report

Quoted By:

>>12498941

similitude

Anonymous

Anonymous Wed 23 Dec 2020 17:16:51 No.12499496 Report

Quoted By:

>>12498328
>OK, but what objectively determines what states are more ordered than others?

symmetry, chirality are good places to start

Anonymous

Anonymous Wed 23 Dec 2020 17:20:36 No.12499508 Report

Quoted By:

>>12498165
The universe is literally a vampire, and you are the soul that (s)he has sucked out and is slowly devouring the vitality of. The "real" world is just an illusion cast on your soul so that you won't rebel.

Anonymous

Anonymous Wed 23 Dec 2020 17:43:11 No.12499573 Report

Quoted By:

>>12498165
>Why is the universe draining my energy 24/7?
You are actually the maggot consuming the universe's decaying body, which is low entropy, and shitting out higher entropy. You're the bad guy here.

Anonymous

Anonymous Wed 23 Dec 2020 23:00:10 No.12500707 Report

Quoted By:

>>12498328
>If we're talking about completely random arrangements, any sequence is just as probable as any other
look into macro- and microstates. Basically some arrangements are more probable because more microstates correspond to that macrostate.

Anonymous

Anonymous Thu 24 Dec 2020 09:58:40 No.12502257 Report

Quoted By:

bump for continuation

Anonymous

Anonymous Thu 24 Dec 2020 17:56:45 No.12503425 Report

Quoted By: >>12503442

>>12498165
Jeez, so mamy posts in this thread and no one posted an actual definition.
$S = k_B \ln{\Omega}$
where S is the system's entropy, kB is Boltzmann constant (a proportionality constant that relates energy and temperature) and omega is the number of possible states of a system.

Anonymous

Anonymous Thu 24 Dec 2020 18:01:04 No.12503442 Report

Quoted By: >>12503519

>>12503425
my not the macro definition?

$S=\int{\frac{dq}{T}}$

Anonymous

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Anonymous Thu 24 Dec 2020 18:10:34 No.12503483 Report

Quoted By: >>12504015

>>12498165

Anonymous

Anonymous Thu 24 Dec 2020 18:10:53 No.12503485 Report

Quoted By:

>>12498165
>eat food
>take shit
>waaaah why does the universe drain my energy

Anonymous

Anonymous Thu 24 Dec 2020 18:18:58 No.12503519 Report

Quoted By:

>>12503442
Two reasons:
1. My definition (which is the standard one) is purely statistical. It can be used to calculate entropy of systems which may not have a well-defined energy (e.g. a stack of coins).
2. Your definition relies on temperature. Which begs an obvious question: what is temperature? In my definition temperature is defined through entropy, not the other way around
$\frac{1}{T} = \frac{\partial S}{\partial U}$
which can be used to meaningfully talk about temperature in systems where it may not be so obvious (e.g. a small collection of spin-1/2 particles) or to derive common temperature laws. For instance you can derive the ideal gas law using the definition of temperature above and the Sackur-Tetrode equation, which is derived combinatorically using the definition of entropy I gave.
https://en.wikipedia.org/wiki/Sackur%E2%80%93Tetrode_equation

Anonymous

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Anonymous Thu 24 Dec 2020 18:43:10 No.12503575 Report

Quoted By:

>>12498165
>blocks your path

Anonymous

Anonymous Thu 24 Dec 2020 21:11:45 No.12504015 Report

Quoted By:

>>12503483
https://en.wikiquote.org/wiki/William_Poundstone

Anonymous

Anonymous Thu 24 Dec 2020 21:18:52 No.12504036 Report

Quoted By: >>12505808

>>12498230
absolutely and unquestionably based /thread get the fuck out everyone

Anonymous

Anonymous Thu 24 Dec 2020 21:21:03 No.12504042 Report

Quoted By:

>>12498328
Chaos magic.

Anonymous

Anonymous Fri 25 Dec 2020 08:52:16 No.12505808 Report

Quoted By:

>>12504036
no

Anonymous

Anonymous Fri 25 Dec 2020 09:04:44 No.12505827 Report

Quoted By:

>>12498165
A measure of information, but it can also be interpreted as a measure of order.

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