/sci/ - Science & Math

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Anonymous Sun 24 Apr 22:03:49 2022 No.14425322 View Reply Original Report

Quoted By:

Are we at the point where we require time travel?

2 posts omitted

Anonymous

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Anonymous Mon 25 Apr 2022 01:41:00 No.14425812 Report

Quoted By:

>>14425596
It already exists
https://www.policemag.com/339858/the-tactical-use-of-tasers
>The X-Rail allows you to mount a TASER X26 directly to the forward hand grips of any weapon with a Picatinny-type rail system.

Anonymous

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Anonymous Mon 25 Apr 2022 06:13:43 No.14426317 Report

Quoted By:

>>14425334
at record speed

Anonymous

Anonymous Mon 25 Apr 2022 06:17:18 No.14426324 Report

Quoted By: >>14426354

No, not even close. There are tons of other courses forward but currently our pathological empathy keeps us from implementing them. The ability exists, the will doesn't (not yet).

Anonymous

Anonymous Mon 25 Apr 2022 06:41:48 No.14426354 Report

Quoted By: >>14426413

>>14426324
>Empathy
Every single homogeneous society hires cheap foreign labor. They can't resist it

Anonymous

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Anonymous Mon 25 Apr 2022 07:17:19 No.14426413 Report

Quoted By:

>>14426354
>hires
Not sure it always qualified as hiring.

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Anonymous Mon 25 Apr 06:02:56 2022 No.14426285 View Reply Original Report

Quoted By: >>14426296

Any actual researchers here? If so what are you researching and do you think it’ll make any actual impact on the world at large?

Anonymous

Anonymous Mon 25 Apr 2022 06:06:25 No.14426296 Report

Quoted By: >>14426300

>>14426285
I research technology but it isn't original science. Just manufacture stuff. The impact should be making money and my customers having a safer and cheaper supply.

Anonymous

Anonymous Mon 25 Apr 2022 06:08:14 No.14426300 Report

Quoted By: >>14426316 >>14426384

>>14426296
Working for companies isn't real research.

Anonymous

Anonymous Mon 25 Apr 2022 06:13:10 No.14426316 Report

Quoted By: >>14426320

>>14426300
Why would it not be research? I bet you could not bake a loaf of bread without doing research

Anonymous

Anonymous Mon 25 Apr 2022 06:14:56 No.14426320 Report

Quoted By:

>>14426316
makes sense to me
http://eaton.math.rpi.edu/Faculty/Schwendeman/Workshop/GSMMCamp2005/Abstracts/Please/bread_data_paper.pdf

Anonymous

Anonymous Mon 25 Apr 2022 06:56:15 No.14426384 Report

Quoted By:

>>14426300
yeah it is

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Anonymous Sun 24 Apr 20:01:32 2022 No.14425013 View Reply Original Report

Quoted By:

math i great :)

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Anonymous Sun 24 Apr 01:05:42 2022 No.14422731 View Reply Original Report

Quoted By: >>14426094 >>14426373

>4.5 billion years old
>universe is 13.8 billion years old
You don't actually believe this do you?

21 posts and 4 images omitted

Anonymous

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Anonymous Mon 25 Apr 2022 04:07:26 No.14426094 Report

Quoted By:

>>14422731
>>14422870
>is actually less than ~15,000 years old

Anonymous

Anonymous Mon 25 Apr 2022 04:14:47 No.14426109 Report

Quoted By: >>14426373

>>14426036
>It has a beginning, but not an end; infinite.
That is not "infinite" but linear.

Anonymous

Anonymous Mon 25 Apr 2022 04:30:06 No.14426142 Report

Quoted By: >>14426156

>>14422870
If the universe was infinite it already would’ve reached thermaldynamic equilibrium.

Anonymous

Anonymous Mon 25 Apr 2022 04:41:39 No.14426156 Report

Quoted By:

>>14426142

universe is proven to be non-eternal, it had a beginning. leads back to cosmological argument, hence god being more likely to exist than not. atheist are delusional and irrational.

Anonymous

Anonymous Mon 25 Apr 2022 06:51:37 No.14426373 Report

Quoted By:

>>14422731
>>14422870
>>14426109

lol, what? linear refers to the structure of a set of coordinates; namely that it's a line. Something that is linear can also be infinite. A linear line from 0 to ? is still infinite, whether it has a beginning or not. Check out aleph numbers if you want to learn more about "sizes" of infinity.

As for the universe, we only know the big bang happened 13.8 billion years ago, but that doesn't mean the universe didn't exist before then. Just look into eternal inflation [1]. And OP, maybe...just maybe...Earth wasn't created at the instant of the big bang?

This is my first time in /sci/ and can't say I'm impressed with the posters here. Are you all this dumb?

[0] https://en.wikipedia.org/wiki/Aleph_number
[1] https://en.wikipedia.org/wiki/Eternal_inflation

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Anonymous Mon 25 Apr 06:44:20 2022 No.14426360 View Reply Original Report

Quoted By: >>14426362

Is it really pointless?

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Anonymous Mon 25 Apr 02:45:38 2022 No.14425936 View Reply Original Report

Quoted By: >>14425983 >>14426043 >>14426333

Assuming there is a God, what's the most logical, scientific idea of how God might work?

6 posts omitted

Anonymous

Anonymous Mon 25 Apr 2022 03:05:50 No.14425983 Report

Quoted By:

>>14425936
In pretty sure God doesn't get paid to do a specific labor. Ergo, God doesn't work

Anonymous

Anonymous Mon 25 Apr 2022 03:10:46 No.14426000 Report

Quoted By:

>The logical theist: "The wonder of nature is too vast to have been the creation of pure chance."
>The "rational" atheist: "One day, the non-sentient plants decide that the best way to preserve their species was to make their flesh as succulent as possible to the birds so that their seeds will be spread tall and far. It's just randomness bro."

Anonymous

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Anonymous Mon 25 Apr 2022 03:12:48 No.14426006 Report

Quoted By:

Anonymous

Anonymous Mon 25 Apr 2022 03:37:32 No.14426043 Report

Quoted By:

>>14425936
Without regard for the well-being of living things.

Anonymous

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Anonymous Mon 25 Apr 2022 06:24:49 No.14426333 Report

Quoted By:

>>14425936

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Anonymous Mon 25 Apr 05:24:38 2022 No.14426226 View Reply Original Report

Quoted By: >>14426227

50% probability

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Anonymous Mon 25 Apr 05:54:03 2022 No.14426269 View Reply Original Report

Quoted By:

What does death feel like , after googling and seeing "it feels blissful". I thought it would be extremely painful but does anyone here know what exactly happens to the body and what this dictates on the level of pain you'll feel.

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Anonymous Mon 25 Apr 04:11:49 2022 No.14426103 View Reply Original Report

Quoted By: >>14426134 >>14426159 >>14426166

If you had to relearn math again, where would you start from?

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Anonymous

Anonymous Mon 25 Apr 2022 04:26:23 No.14426134 Report

Quoted By:

>>14426103
>If you had to relearn math again, where would you start from?
Her+Me=Pi

Anonymous

Anonymous Mon 25 Apr 2022 04:38:45 No.14426152 Report

Quoted By:

left to right

Anonymous

Anonymous Mon 25 Apr 2022 04:43:26 No.14426159 Report

Quoted By:

>>14426103
snowbunny got a fat ass doe

Anonymous

Anonymous Mon 25 Apr 2022 04:49:26 No.14426166 Report

Quoted By:

>>14426103
The textbook "Mathematics for Physicists by Altland"

Anonymous

Anonymous Mon 25 Apr 2022 05:52:59 No.14426268 Report

Quoted By:

I would skip to the part where I realize it doesn't matter and then play videogames.

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Anonymous Sun 24 Apr 17:01:33 2022 No.14424577 View Reply Original Report

Quoted By: >>14426247

If the derivative of e^xi is ie^xi, and multiplying by i means 90 degree rotation, does that mean we can only move around the circle with the increments of 90 degree, since that's the rate of change? What if we want to move slower than that?

15 posts omitted

Anonymous

Anonymous Mon 25 Apr 2022 03:11:13 No.14426002 Report

Quoted By: >>14426005 >>14426012

>>14425538
do i need to take vector calculus to understand that or is it covered in complex analysis?

Anonymous

Anonymous Mon 25 Apr 2022 03:12:10 No.14426005 Report

Quoted By:

>>14426002
complex analysis is the class you want.

vector calculus is more highly specialized/limited

Anonymous

Anonymous Mon 25 Apr 2022 03:16:31 No.14426012 Report

Quoted By:

>>14426002
both

Anonymous

Anonymous Mon 25 Apr 2022 03:34:09 No.14426038 Report

Quoted By:

>>14425215
>how so? explain
You mentioned "slope of the tangent" which is a thing we might care about if we were looking at something on the xy plane, where we usually place function inputs and outputs. The line is created by looking at the position on the y axis as a function of the position on the x axis. Then if you draw a tangent line you can see that its slope is the same as the slope at the point it is tangent to, and particularly useful, its slope is the ratio that y changes with respect to a change in x, that is, the derivative of y with respect to x.
Now complex numbers, as other anons have rightly pointed out, are some kinda clunky vector space fused with a special redefinition of multiplication such that it means rotation instead of scaling all for the special purpose of getting a number that can reasonably be said to equal the square root of a negative number.
So the complex plane we are not looking at function input and output like we are on the xy plane, we are looking at the """imaginary""" aka rotating, and """real""" aka scaling components of a single complex number.
Nobody calls them rotating and scaling components, but imo it would be much better than the stupid names we got stuck with due to stupid historical reasons.
Anyway. You have a function of x though, and it's making a shape on the complex plane, but there is no x axis on the complex plane so you are not seeing the "change in x" so no tangent you draw here is going to have any relationship to your derivative with respect to x.
If you wanted to add an x axis, which seems reasonable, you would need to have it extending out perpendicular to the complex plane. Perhaps imagine a spring or screw rising out of it showing how for every value of x there is exactly one point on the complex plane which is output by the function, and the rate that that point is moving for every nudge to x has both a magnitude, and a direction, or said another way, it has a real and imaginary component.

Anonymous

Anonymous Mon 25 Apr 2022 05:35:12 No.14426247 Report

Quoted By:

>>14424577
e^xi is a complex number, a+bi.
ie^xi is a complex number, -b+ai.
That should clear up your misunderstanding.

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