Archived threads in /sci/ - Science & Math - 107. page

File: worf-lute.gif (552KB, 245x215px) Image search: [Google]

552KB, 245x215px

Are there any good scientific papers on deductive reasoning in practice in e.g. economics or engineering?

File: NewCanvas1.jpg (167KB, 2340x1596px) Image search: [Google]

167KB, 2340x1596px

is there a way to take some algebraic variety or manifold and describe the lines at which it must fold at in order to move through a boundary without intersecting it? or am i being insane?

i'm trying to figure out how to compactify a shape or space to go through a boundary with the least amount of folding and manipulation that doesn't involve scaling.

File: DDmpcI-XoAAINIL.jpg (35KB, 468x487px) Image search: [Google]

35KB, 468x487px

Redpill me on babbys first abstract algebra class, I'm a senior CS major with some math. How fucked am I, and can I learn to love it and get an A. Pic unrelated

File: The Zipper.jpg (878KB, 2000x3000px) Image search: [Google]

878KB, 2000x3000px

Theoretically there are an infinite amount of universes with an infinite amount of different ways our lives could've played out. But what if the amount isn't infinite, but instead diminishes as time moves forward? What if those universes are just the decisions we haven't made yet because the progression of time hasn't reached them?

Think of it like a zipper in your jacket that's zipped midway and that you are the pull tab. As you zip upward, you move forward in time and the past behind you locks together, just as both sides of the zipper come together and close.

You look to the past and see this straight line of decisions you've made that has led you to this point in time. But that line divides as you look ahead with the infinite amount of decisions you have the potential to make.

In the past, there was an infinite amount of universes of different things you could've done. Each one of them playing out, as you come closer to deciding. But since you've already made a decision, you have erased the possibility of making another decision in that point in time, therefore erasing the existence of that universe. That concept of erasing those universes from existence is the closing of the zipper as both sides come together to make a single straight path.

As you look ahead, the zipper opens. Leaving an endless possibility of different outcomes to occur. As we move forward in time, we just keep erasing these pieces of infinity until it all becomes one straight line, and there are no longer any more universes.

That's not to say that the end of your life means the end of possible universes mankind can decide from. We all are just little tabs riding up a split zipper making it close the farther in time we go, killing off the amount of universes that exist with it. But who knows. I'm just someone posting on /sci/ because I'm bored. Feel free to destroy this theory however you like or discuss or add more onto it. I'd like to know what you think

File: ZBmJbNAhOOE.jpg (52KB, 604x491px) Image search: [Google]

52KB, 604x491px

hey guys im so excited right now and just:wtf
what are yall think about wormholes(black hole-white hole) and if white h.'ll bring u to another universe will ship piloted by dunno robot stay alive there or it will be so umm irrational and it will blow up to petaquarks?

File: [email protected] (47KB, 660x440px) Image search: [Google]

47KB, 660x440px

How resilient, really, are our eyes to damage? All this talk of eclipses and eyes has got me paranoid about my own eyes. Now I am constantly paranoid of losing my eyesight or damaging my sight. Can anyone else relate? Whenever I drive, I worry that the sun is too strong and will hurt my eyes. I worry about the slightest scratch near my pupils, and when stuff gets close to my eyes I get incredibly uneasy. Yesterday I was taking off my (normal) sunglasses and I swear I scratched my eyeball on the lens. I still can't stop thinking about it, my eye feels itchy and I'm worried I'm going to wake up tomorrow with no sight in that eye

Does anyone else share in my paranoid? I feel like I could lose my eyesight any minute. Would a "scratch" on my eye, say from a sharp edge, quickly and permanently lead to blindness, or can the eye withstand some scratching?

File: IMG_0218.png (1MB, 1136x640px) Image search: [Google]

1MB, 1136x640px

Do Homo Sapiens have 'Alpha Males?' Doesn't look like it. Also how does natural selection work in human beings - how is it manifesting itself right now in the 21st century if at all?

File: stock-photo-young-asian-woman-and-sign-plus-or-minus-marks-in-hands-portrait-of-beautiful-asian-woman-thai-girl-277929620[1].jpg (24KB, 450x320px) Image search: [Google]

24KB, 450x320px

why do we use minus if we could just use fractions?

File: Windows-Live-Writer-Three-Phase-Power-Simplified_CC06-ThreePhasePower_2.png (98KB, 779x394px) Image search: [Google]

98KB, 779x394px

EE student here.

I'll take a course about three phase circuits, transformers, electrical machines, generators, etc next semester. The thing is my timetable is fucked up and I'll have to skip some of the lectures due to conflicts.

Anyone can recommend me some good lectures on youtube or something similar? In a quick query I found a lot of videos, but I have no clue if they're good or not.

File: 10460349_1111807232163483_1751349497692328228_n.jpg (19KB, 480x480px) Image search: [Google]

19KB, 480x480px

How bad is getting a "C" in graduate school? I'm taking Decision Modeling and it looks like I'm really going to struggle with it.

I don't plan on getting a C however, I'm going to study my ass off and do the best I possibly can but I've never made a C before. How bad does it look to employers on a transcript?

File: Screen Shot 2017-08-22 at 11.24.48.png (393KB, 667x645px) Image search: [Google]

393KB, 667x645px

They no longer believe that math is a pure subject.

* Math is political
* Implicit messages in mathematics are racist and damaging to students
* Mathematics has particular bigoted elements in its history and present framing that we must engage actively

https://archive.fo/Ow6pf
http://blogs.ams.org/inclusionexclusion/2017/08/17/discussing-justice-on-the-first-day-of-class/
https://archive.fo/Ow6pf

The American Mathematical Society is actively calling on professors to force students to check their privilege on the first day of classes.

File: natural-pheromones-testosterone-boost.jpg (24KB, 300x454px) Image search: [Google]

24KB, 300x454px

Is there a relatinship between Testosterone and Pheromones??
gib me scholarly articles supporting your view. Test. indeed does work(it is OK and Proper to lie and say high test matters but the unproper-to-mention truth is that androgen receptors are first needed ,and dopamine receptors must be healthy)

Please tell, a friend of mine is doing 1,000 pushups a day to boost his Pheromones and his shoulders are painfully sore.

File: image.jpg (93KB, 640x574px) Image search: [Google]

93KB, 640x574px

>perpetual motion doesnt exi-
https://www.youtube.com/watch?v=au4hbUm4mMo

File: 1502607292475.png (105KB, 600x373px) Image search: [Google]

105KB, 600x373px

how do i create a shitpost that inspires pure rage that isn't racebait?scientifically speaking that is

File: eating.png (198KB, 645x388px) Image search: [Google]

198KB, 645x388px

Okay, so I'm new to /sci/ but I'm posting here because I'd like to get some actual scientific responses and not broscience like I'd get on /fit/.

I keep seeing articles that stress about how important it is to eat at regularly defined hours to keep your weight down, because if you don't eat regularly you end up eating more.
But is there any scientific evidence to support this?

I work an office job where we can eat pretty much whenever we want from 12:00 to 14:00 (any later and all the restaurants close, so.)-
We usually go eat at 12:30, and by 11:30 I start getting incredibly hungry. If the portion sizes weren't predetermined I'd probably eat an industrial sized pot of whatever they're serving.
By contrast, when I'm on vacation (like I am now) I eat whenever, and I very rarely get that hungry, even if I haven't eaten in a long time.
I still only eat one or two meals a day, so it's not like I'm not hungry because I'm snacking all the time.
Even when I'm at work, if I end up skipping lunch because some emergency comes up, past 14:00 or so the hunger becomes a lot less noticeable.

Basically what I'm getting at is that, for me, eating at regular hours ends up causing more of a psychological dependence than the actual physical need for food.
I can't imagine I'm the only one that feels this.