Archived threads in /sci/ - Science & Math - 1510. page

an application that predicts the climate

>>8231556
So is that a CS project, or something more interdisciplinary? hkw does it work anon? If you are worried about someone taking your idea you don't have to go into too much detail

Do independent research projects count?

I am developing "hodological spaces." They consist of a set of points, and the cohesive data involves a rule that takes two pairs of points and, should they be comparable, tells if the distance between one pair is less than or equal to the distance between the second pair. No actual numbers are involved, so this is sort of like a metric space without actual distances, only relative distances.

Now, that's all well and dandy, but why are they worth studying?

For starters, the category of hodological spaces forms a cohesive topos. This hints that they are a very nice model for spaces.

Furthermore, they allow for elegant, coordinate-free constructions of important spaces. It is straightforward to define the set of points equidistant from a pair of distinct points in a space, and an n-sphere is the universal space such that, for any pair of distinct points, the subspace of equidistant points is isomorphic to an (n-1)-sphere. A 0-sphere is simply a pair of points, which is a simple construction via the aforementioned cohesive structure. (Note: this is a construction of the homotopy type of spheres.)

Every hodological space can be made into a topological space in a natural and functorial way. They generalize topological spaces.

They cater to our intuitive method for examining a space, by examining how far apart points are in relation to other points.

Another neat feature is that there can be "locations" which are topologically simply points, but may consist of infinitesimal structure beyond being simply a point. I want to extend the techniques of synthetic differential geometry to hodological spaces.

They are pretty fun!

>>8231531
>I know, by incontrovertible direct experience
illusion

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>my body works with the laws of nature
But your body violates the 2nd law of thermodynamics
It keeps its order by using more energy

>>8231536
wrong

living beings cause more disorder in the universe

The ETN was needed for the electric squibs that I used to detonate half-pound buried Tannerite charges that were used to simulate artillery impacts. I began using electric blasting caps, which proved expensive and impractical since I had no legal way to store the caps where I needed to use them. Instead, I invented a tiny electric match that was dipped in several layers of chemicals, including ETN. When hit with a current, the squib made a small pop, no louder than a firecracker, but was energetic enough to fire the Tannerite.

Anyway, back to Wednesday morning, I chose to nitrate the erythritol using sulfuric acid and ammonium nitrate since I was out of white fuming nitric acid. This necessitated a recrystallization from hot methanol, which I proceeded to do in a large beaker on a radiant cooktop. I grabbed a 1L beaker and brought about 500 ml of MEOH to a low boil while dissolving 50 grams of crude brown ETN into the hot alcohol.

As I turned around to put up the container of dirty ETN, I heard a sound that made the hair on the back of my neck stand up. It was a loud TICK!, the sound of cracking glass, followed less than a second later by an even louder one. The beaker was cracking from the heat of the hotplate, and the second crack had opened a crack on the bottom of the beaker. As I watched, the MEOH/ETN solution flowed onto the hot surface. Before I could react, the leading edge of the pool of solution flashed to dryness and the precipitated ETN deflagrated, igniting the MEOH/ETN in the beaker. I now had a roaring fire in the stovetop and no good options open to me. For about 3 seconds, I did the singularly most stupid thing I have ever done in my 6 decades on this planet. I leaned in close and tried to BLOW OUT THE FIRE! The sharp crack of another glass fracture brought me out of suicide mode. It also made me pull my head back, which saved my life. What I should have done right then was drop to the floor and cover my ears. I'd give my left nut to be able to time travel back 2 years and do that. What I actually did was try to shove the burning beaker into the sink and drown the fire with water. As I reached for the beaker with both hands, my life was changed forever.

I barely remember the moment of detonation, aside from the curious sensation of electricity coursing through my hands. The actual explosion didn't seem as loud as it should have been, but having both eardrums blown out will do that. I remember standing there for a few seconds taking mental stock of my situation, not really sure of what had just happened. As what was left of my hearing began to come back,

I began to hear a strange sound that reminded me of the sound that water from a hose makes when the stream hits dry concrete, sort of a splopping sound. I raised my left arm and discovered the source of the strange sound. Arching up from the stump of my left wrist was a half-inch wide torrent of bright red arterial blood that was splashing on the floor and had already pooled for a yard around my feet.

Instinctively, I tried to clamp off the blood flow with my right hand, but the mass of loose bones and tattered pink and yellow tissue that was attached to my right wrist was no longer a functioning hand. It had just begun to sink in that I had just blown off both of my hands when I heard my wife screaming from the bedroom. Above all else, I couldn't let her see my hands. I made a run for a downstairs bathroom and blocked the door closed with my body. By this time I was beginning to feel the effects of blood loss. It was also at this time that my nervous system began to regain function. That's when the pain started. Now we were both screaming. I managed to tell her to call 911 and that my blood type was A+. I had to staunch the bleeding, or I wouldn't live long enough for the EMT's to arrive. With no hands, that would be tough. I managed to pull several towels down from a shelf, cross my arms in front of my chest and lay face-down on the pile of towels. It must have worked because I made it to the hospital. I never lost consciousness and remember most of the ambulance ride. The last thing I remember was the EMT briefing the surgeon "traumatic bilateral amputation of the hands". I awoke sometime a day or two later to the sight of the bandaged stump where my left hand had been. I then looked to my right, expecting to see the same thing. What I saw instead was a miracle. Instead if a slim tapered bandage, my right arm terminated into a huge bulbous blood-soaked bandage.

I was born with something like synesthesia. I don't strongly associate colours or other basic sensory registries with ideas, but I do something similar.

For me, when I think of an idea my brain emulates the feeling of being in a specific imaginary location or atmosphere.

An example: when I am playing the song "Ho Hey" by the Lumineers, I feel like I am climbing down from a giant bookshelf. It's weird and involuntary, but once that association is formed, it is pretty much impossible not to recall whatever the idea is.

When I am studying topological spaces, they induce weird environments. When I am studying a torus, I am floating in space somewhere between the Earth and Mars, facing the sun.

The associations are not immediately useful, but when I learn new things, the environment becomes clearer and easier to recall.

I have excellent memory, and always have. I don't know if this counts as synesthesia, but it is the association of internal sensory stimulus to ideas. I'm guessing that this is just how memories work, and everybody does this to some extent. It is just very, very prominent for me.

Brains are weird.

>>8231542
That's called having a basic imagination

Makes remembering things easier because you have more hooks to bring forth the information you'd like.

let me pose with some garbage math on my blackboard xD

>>8231062
Every sects theory has aspects of the truth.
It may not be completely true, but it may have parts of it which are.
More like reform.

>>8231062

>“You start with a random clump of atoms, and if you shine light on it for long enough, it should not be so surprising that you get a plant,” England said.

God damn I hate the lay press.

>>8231015
BASED, How do I get into research with military?

>>8231015
DARPA has about the same budget of NASA. In other words, fuck all.

For regenerative medicine we really need to do more basic science.

>>8231127
Seconding this. Pretty curious

>>8230842
>you have to atleast provide some sort of falsifiable evidence

thread's over

>>8230842
>I don't want answers based on pure conjecture and pop-sci "theories". If it's your claim that there are multiple universes you have to atleast provide some sort of falsifiable, measured evidence or atleast suggest a way to prove it.

Well, I remember it being Berenstein not Berenstain. I have a really good memory so the probability that I am wrong is pretty low, and also there are a lot of other people who report the same phenomenon. Using occam's razor, we can rule out the possibility that we are all just wrong, therefore the most parsimonious explanation is that I and other people who remember is as Berenstein come from an alternate universe where it was always Berenstein

>>8230849
You can offer a way to prove it as well though. Like "If we could measure X, then we could deduce that there might be more than one universe" because I have no clue where to even begin if someone wanted to find out if there were more than one universe.

>>8230795
>>>/diy/

No. There are giant steel support columns at the edges of your walls and you can't remove them without demolishing your home and spending 9999999$ on it.

>>8230795

It depends on the propert.

You'll need to hire a surveyor to determine that.

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>>8230612
>> Only planet in the solar system with rings

>>8230614
uranus and neptune rings are shit tier

>>8230617
What about Jupiter's rings?

What are you having trouble learning?

>>8230975
how to not make shit threads on /sci/, apparently

I know that feel OP.

I've been given a conditional offer to begin studying at a prestigious school in my country, and one of the entry requirements is a written essay.

I've been losing sleep, pacing around my room and slapping myself across the face for days and I can't even write a single coherent paragraph.

>>8230480
I hardly know any crystalline cohomology yet. It looks pretty hardcore, or maybe just new. The nLab page is lacking, so I will pirate a book and dig around a bit. I just want to figure out what the ambient ∞-topos is...

>>8230480
Just starting to learn algebraic topology. Can't help you. Sorry.

>>8230499
OP here, what can you tell about approaching geometry/concepts via \infty-topoi ?Are you alg. topologist at first?

Us.

To Coldplayyy

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>>8230407
Really?
They let you get away with this here on /sci/? Wow. I am really starting to question the integrity of this board. It's like highbrow >>>/x/, but /sci/ has more flat Earthers.
Well
Just golly...

>>8230358
Polio, AIDs, influenza, and Ebola. If you're talking about our own evolution, sickle-cell disease and appendicitis.

>>8230358
my wisdom teeth never came in.what does this mean?

>>8230394
It means that you're one lucky motherfucker.

So cutting edge, none of us have heard of it yet. Why don't you tell us about it?

>>8230069
paleonthologist believe that dinosaurs develop feathers as aesthetics

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>>8230065
/x/ likes it
If dinosaurs became birds then there should be some evolutionary feathered first step. Pretty cool.

>>8229902
>>8229902

I think it's acceptable as long as the information is accurate. If you feel some thing's fishy then cross check with another source. Community college is cool bro

Considering most of my textbooks throughout college never credited a source for this type of thing, at least they own up to it.

>>8229902
lol