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Archived threads in /sci/ - Science & Math - 246. page

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Are vampires real?

Let's discuss them. Everything you know. How does a human become a vampire? What do real vampires look like and what kind of abilities do they possess? Bonus points if your knowledge has allowed you to narrow down locations where to find them.
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>>9076972
There is a Vampire inside you RIGHT NOW.
Also five black children.
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>>9076973
Interesting

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Why can't we shut off nerves causing pain with some sort of procedure that doesn't involve risky surgeries and cutting through arteries and tissue?

I feel like one way could be to implant a magnet or something on surrounding nerve area that draws in medicine from the blood supply. Or just an injection that permanently disables the nerve from transmitting. Why is this too hard?
4 posts and 1 images submitted.
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first time /sci/ lurker. I thought /sci/ was supposed to be full of smart people??
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>>9076954
No, it sucks
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>>9076928
>Why is this too hard?
>implant a magnet or something on surrounding nerve area that draws in medicine from the blood supply.
>implant a foreign object

>on nerve
>implant rubbing on a nerve

>draws in medicine from the blood supply
Capillaries, osmosis, and magnets themselves don't work this way. The compound will be active elsewhere in the body still, and thus cause side effects.

>injection that permanently disables the nerve
>injecting fluid and expecting locality and precision
This is already done with botox, ethanol, etc.

Gamma knife / rhizotomy lesions nerves and prevents them from firing. Though it comes at a cost.

>Source
Type 2 trigeminal neuralgia. Don't want increased probability of stroke, surgery bullshit, or loss of sensation outright without a guarantee of a permanent solution. I leave it be.

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This is the hardest math problem I have ever been given. I'm not in honors math classes, and I'm a junior. I found this in the first chapter of a calculus textbook and I've been thinking about it for days.
10 posts and 2 images submitted.
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>>9076911
this isn't even a calculus problem, this is basic middle school algebra
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Man are you serious? Hardest problem you've ever seen? Lmao
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>>9077344
I'm aware, it's in the first chapters. Introduction sort of deal.

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Say that I have a branch, composed of unbending segments, but bending joints.
The branch forks in any pattern.

How do I calculate how the branch bends under its own weight?

I can't even calculate how a single segment bends under its own weight, I get stuck at angle/cos(angle) = weight * length/2 * k (where k is the spring constant of the branch joint)
5 posts and 1 images submitted.
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Bump 2
Electric Boogaloo
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Well, could someone at least tell me how to calculate how a single segment bends under its own weight?

Assuming it bends only at the joint between it and the wall, I can't do curved segments for the simulation I'm doing.
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I'll help you out OP.

The bending of one segment is trivial. As for the first segment bending, I'll leave that as a problem for the reader. Now just repeat those steps for every branch.

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Potential Psycho: Is it in our nature to see sex & violence manifested in the universe, or is that an aspect of nature itself?
1 posts and 1 images submitted.
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Three evenings ago (around 9:40pm-ish) I was out in a patch of woods near my house screwing around, and all of a sudden a bright light began casting sweeping shadows of the overhead foliage across the ground all around me. I looked up and saw an extremely bright light shooting across the sky, from the north horizon all the way across to the south horizon.
It took about three seconds to make it all the way across the sky and was bright enough that I could see it behind the thinner clouds in the partly clouded sky. As it swept toward the southern horizon I was watching over a field where it was casting clear, sweeping shadows of the clouds across the field.
Around two or three minutes later I heard a fairly faint boom from directly above, faint enough that you could have talked over it if you weren't listening,but distinctly present and from directly above.

I am certain that it was a meteor, as it was happening all I could think of was the Chelyabinsk meteor back in 2013, bu this one was much faster, not as bright, and not nearly as loud.

How often are these this bright/audible? I was certain that the local news would explode, top story next morning, maybe even enough to make national news, but there wasn't any mention of it, even online that I could find.
There is nothing else this could have been, but I've not wanted to talk about it and sound full of shit with no official backup. It flew over Northwest Arkansas, around 500,000 people to see it here and I am certain it could have easily traveled way further than us.
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What is the most likely field for a NEET to make an impact without going to school and only doing self-study? Also, it would be nice to make money from it.
13 posts and 4 images submitted.
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>>9090395
Hmm.. Anatomy classes, as a corpse.
Selling blood and organs while still alive.
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>>9090395
Entrepreneurship
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>>9090395
logic, pic related
sacred geometry

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Okay, so I've been messing around with some math-related drawings, and I was wondering if you all could help.

Basically my goal is to draw an image with four different shapes, so that each shape is in contact with the other three. In other words, this is the most simplified version of the Four Color Theorem, which says that you only need to use four different colors, if you want to color in a map so that the same color is never touching.

Here are a few simple drawings I've come up with. What I'm curious about is:
>Can anyone come up with designs that look cooler, but still solve this problem. And:
>I'm also wondering if it's possible to create a solution to this problem that only uses identical shapes for all four regions.
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>I'm also wondering if it's possible to create a solution to this problem that only uses identical shapes for all four regions.

If you are allowed to change the size of the shapes, it's relatively easy, but it's probably impossible to do it with shapes that are the exact same size.
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>>9076823
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>>9076875
Damn! That's solid, very good., wish I'd thought of it

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What's the most plausible theory for the origin of life on Earth?
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>>9090336
something like this
https://www.researchgate.net/publication/235722244_The_Origin_of_Cellular_Life_and_Biosemiotics
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>>9090336
I pooped the universe out of my butt one day
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>>9090336
Randomness.

It is just as robust as any rule-based pattern generator.

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What is happening at the MКC/space station ?
There are so many flaws in all these theories that I can't perceive the world in any way , i just ... hate the feeling when i am being lied to ..
I even got so mad at this world that i started crying only because i feel like all my life i've believed in things others said to me .
I am refering to theories about everything from the biggest hoax flat/ spherical Earth to the 9 = everything/0
I really want to know ..
4 posts and 1 images submitted.
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>>9076812
What was that, my schizophrenic son?
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Haha you suck
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niggers and jews

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Idt weird but somehow still used units from all over the world. Maybe with an interesting backstory. (inb4 metric system vs. imperial system)

BTU - British Thermal Units - I bought an air conditioner in *Germany*, and was surprized that it is common to give their cooling power in BTU. A British Thermal Unit is the amount of energy required to heat 1 pound of water about 1 degree Fahrenheit.

SKE - Steinkohleeinheit - The average amount of energy one can gain from burning one ton of bituminous coal

Stere - 1x1x1 to 1x1x1.2 cubic meters of wood, depending on how it was cut and how it is piled.

(pic unrelated)
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I've been noticing a slow passage of time ever since I went to school. I was simply sitting still while waiting for my class. It was exactly 0730 when I went to school and it was just 0739 when I last checked the time. Its now 0756 and im still confused why its still in the 7th hour when I've been sitting on a bench lurking 4chan for a while. Explanation for a brainlet?
2 posts and 1 images submitted.
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>>9076754
what is boredom and how does it affect perception of time

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hello /sci/
im a CS major about to finish my bachelors this spring, and im also a pure math student planning on transferring to UT austin to finish my bachelors. I want to do my masters in CS but have no clue what type of research i want to do. Im interested in computational neuroscience... is there such a thing where i can work on research and do neurscience and CS? Im 22 and i feel i should drop my math major and just do CS to not waste time, but then again I would like a PhD in math involving some physics and maybe CS

Can anyone help me?
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>>9076567
shame bump
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Do a double major, it's what I did. All my upper level CS electives were basically applied combinatorics electives.

- Probability Algorithms
- Quantum Computing
- Information Theory
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>>9076686
if i eventually want to work for spacex or nasa designing robots, what should i familiarize myself with to be of any worth when, if, i work for them?

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5 posts and 1 images submitted.
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>>9076514
Because it's no more applied than pure math and just watered down to a joke.
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>>9076536
yes it is, it's currently being used it biology and health science to solve complex medical problems with math.
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>>9076514
Because it's IMPURE like all those SLUTS that make me not have a GF!!

.
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>>9076477
The answer is 6.

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