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Archived threads in /sci/ - Science & Math - 259. page
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If I want to work in a lab with chemicals hands on, what would be better? Pure Chem or ChemE? What is a typical day for a ChemE like (besides sucking cocks meme?) Can I do most of what a Chemist can do with a ChemE degree? It seems the only differences are ChemE's take more math and some specialized Chemical Engineering courses, and Pure Chemists take more electives that go deeper into various Chem topics. I'm minoring in math, so I'm taking at least the amount of math ChemE's need anyway.
>>
you don't

faggot
>>
>>8149356

>hands on

yeah hands on my dick lol
>>
Chemical engineering is 99% fluid dynamics and tubes

1% actual chemistry

I have just found out a lot of the professors in my school paid indexed journals' staffs (including reviewers & editors) so that they could publish their papers easier. It's not far-fetched to say that these journals pretty much belong to the school.
This is why my school has advanced in ranking so fast in the last 5 years.
Fuck academy. I know that there would be corruption in this shithole but I didn't know it could be THAT bad.

I live in Asia btw, I hope this is only an Asian thing.

(I made a thread a few days ago but I was drunk so...
>>
No one give a shit about you chinks.
>>
Which country?
>>
>>8149353
Singapore.

Not sure what board would really cover a topic like this, so I'll just post it here.

Is there any real reason that we're burying people pumped full of dangerous chemicals inside of expensive steel boxes, never to be seen again? Just think of the millions of dollars are wasted and the ecological impact this must have on the ecosystems around cemeteries.

Like, this sounds like something only mental sickness would conjure up.
>>

Personally i want my ashes to nourish plants once im ded
>>
dumb human culture

t. alien

But really, it is an odd topic. Can't our ashes be sent to space or something cool now?
>>
>>8149282
>Just think of the millions of dollars are wasted

Wouldn't really call it a waste, considering that the dollars spent provide utility to the purchasers.

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everyone strap in, I have a crazy ass math question:

so the definition of infinite is something limitless or has no end. Things such as counting, space (as far as we know) and my hatred towards terrible yet popular music are limitless.

with the numbers 1 and 2, there is a limitless amount of decimals and integers between them, however how can there be an endless count of numbers between 1 and 2 if 2 is the ending point? If these numbers are infinite, how can we count to 2?

INB4 by counting 1, 2 retard
>>
Are you retarded
>>
>>8149201
> so the definition of infinite is something limitless or has no end
That's wrong though.
> how can we count to 2?
define counting. most people define it by applying the counting numbers to a set.
To count to 2, you'd go 1, 2
>>
2 Isn't really an end point, it's more like a second starting point.

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Where were you when LENR was breaking through?

Brilliant Light Power (Randell Mills):
>>
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This guy is a fraud and has been for years. If there was a hype train, it left in 2013 and hasn't come back
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>>8149145
You made this thread earlier. The consensus was that if it really worked then he wouldn't even need investors.
>>
>>8149501
>If there was a hype train, it left in 2013 and hasn't come back

Rossi also has a new iteration of his reactor
Now it has the size of a match and outputs 100w of light/heat/electricity :DDD
Either he's an incredible con man, or the paradigm shift is here

>>8149523
>R&D is free

Also that's...

>background.. be NEET for 3 years now, have on a few occasions noticed what looked like blood in my solid shit, had an episode of stomach aches and lots of farting about one month ago, i'm 5'10" 125lbs-130lbs

>be a week ago, have headache and stomach aching, farting a fucking lot and it smells fucking disgusting, like there is something wrong with me, sort of annoying but whatever it will go away right--- this lasts for a couple of days

>past week, muscle aches, chills,...
>>
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>>8149094
fuck off, i know med students post here and it would help me.

i'm fucking dying spongebobposter
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>>8149090
Sounds like a viral infection. It should go away on it's own in a few days, just keep drinking plenty of fluids and restore your electrolytes (Gatorade is perfect). If it won't go away until next week, then you should see a doctor.

Would a planet need to be a similar size to Earth to be able to produce plant and animal life as we know it on Earth?

ie. When looking for new habitable planets, do we only need to pay attention to planets approx the same size as Earth, or could we find a planet with 2/3 the mass, but still is lush and green with vegetation and oceans.
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>>8148944
What life (as we know it) needs is liquid water. Planet size isn't an important factor.
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>>8148949
I thought gravity would play a big part in it.

Wouldn't smaller planets struggle to keep an atmosphere? ie. Mars? Or is there another reason that Mars no longer has an atmosphere?
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>>8148957
Mars no longer has an atmosphere (a very thin one remains) for two intricate reasons :
- No magnetic activity : Earth's core is active and create a magnetic field around the planet that protect it against solar winds. The same solar winds that can blow the atmosphere out of the planet.
- After the majority of Mars's atmosphere was blown away, the remaining air wasn't creating a suffisant pressure on the surface to keep water liquid. Water evaporates and is blown away, no water remains.

I'm...

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I wanted to have a discussion on the origin of gravity, what causes gravity firstly. I'm curious on the opinions of others

>Pic Unrelated
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>>8148894
${R^\nabla }$
>>
>>8148894
Mass. Anything else ?
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>>8148900
I think the question was misunderstood. I mean, what is gravity, is it Magnetic is it unknown what causes it?

>>8148906
So you believe it's the density of mass that causes gravity?

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What are the most reputable Pure Math schools? Pic related.
>>
>>8148878
ENS.
>>
Yourself and books.
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>>8148921
2nded

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When we say mathematics is rigorous, exactly what do we mean? Is it the fact that it is unambiguous? That we make a assumptions clear? But both those definitions are problematic, since I can easily keep asking for further assumptions, and anything can be classified as ambiguous if we pull if far enough.

I have no problem doing rigorous mathematics, I have problems seeing exactly what we mean by it. It doesn't seem to have a clear definition, or a clear way to measure or distinguish rigorous from non-rigorous.
>>
There are no assumptions.
>>
here's an attempt: rigorous = can straightforwardly be converted into a valid statement in formal logic

that's just the first thing to come to mind; go ahead and nitpick/criticize (for example: what counts as "straightforward"?)
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>>8149002

>wat is an axiom?

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What's the inverse of

[eqn]y=2^{2x}\cdot5^{2x+2}-10^{x+1}+1[/eqn]

?

>pic unrelated
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>>8148747
1/y=(1/22x⋅52x+2−10x+1+1)
You're welcome.
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>>8148756
By inverse I mean the inverse function, like turning $y=2x+3$ into $x=\frac{y-3}{2}$
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>>8148747

x = log10((sqrt(y)+1)/5)

where log10 is the base 10 log.

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Hello /sci/, I'm a dummy and don't belong on this board but I think I just came up with a genius idea, what if the justice system were run by computer programs? My reasoning is that computers can't be bought or biased, mandatory and harsh sentences could be scaled I think. Good or bad idea? Has this been thought of before? I was even thinking of trying to writing a shitty story about it (don't steal if you think it would be a good one)
>>
>>8148740
You do not need a good program, just one that is better than the current system. Turns out computer are bad at making evaluations regarding people behaviour, so I will take a while, maybe forever, to make a good judge computer
>>
>>8148740
>genius idea
>using computer for everything
Yeah, truly breaking news.
>>
>>8148752
I only said that in contrast with calling myself a dummy anon

honestly I just wanted to see if you'd all debate the idea of it's coherent flaws and pluses

Found this cicada almost totally dead (it's legs were just barely moving) and it had these weird growths coming out of it. At first I thought that it was partially crushed and that they were some of it's guts but after picking it up I found that wasn't the case. Is it a parasite? That weird zombie fungus?
>>
>>8148700
>There are people crazy enough to touch bugs

Absolutely disgusting. I have never voluntarily touched a bug because bugs are horrible.
>>
Not exactly sure OP. You should try researching on what it is that you are speaking of.
>>
>>8148712
t. Entomologist

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I was wondering what the most optimal chemical competition for a bomb would be?
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>>8148697
TNT
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>>8148697
Probably steroids
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>chemical bomb

the 1900s called

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>chest hurts, feel congested, cough, breathing issues
>pound a ton of caffeine and go for a walk
>no more hurt, can breathe

Somebody explain this. I swear it does the trick better than any medication. Is it just a placebo effect?
>>
>>8148506
Simply standing up takes care of a lot of aliments.
>>
>>8148506
Sounds placebo

If not go to a doc
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>>8148506
Explain your symptoms more. I have a BS in PhD MD

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I will study at M.I.T from now on. What should I except from this people ?
Also, I'm from Europe.
>>
Asians and elitists.
>>
me
>>
>>8148496

Say you released a golden retriever puppy into a pack of wolves. Would the puppy be able to integrate into the pack or had humanity too thoroughly genetically cucked the golden retrievers ability to survive in the wild?
>>
Domesticated dogs knew which animal was the greatest predator to follow. Wolves got cucked by nature and their shit judgment.
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>>8148492
Coyotes wind up raising stray pup dogs quite often, and occasionally the dog will even make alpha status. (A bit less common among wolves, obviously.)

Even when you get to the point where physical genetic alterations put them beyond all usefulness (Chihuahuas or what not) they seem to adapt fine. They don't become alphas, obviously, but the pack will still raise and defend them, at least some of the time.

Once in a great while, canines will even raise humans.

Packs...
>>
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>>8148492
It could die of plain disease, parasites, cold, etc. Sometimes omega wolves are expelled from packs, become giant lone wolves otherwise they starve, and then make their own packs.. Epigenetics would play a big role here. The puppy could survive if females liked him and if the pack wasn't starving.

>>8148511
Great video.

Dear Anon, sorry for creating this stupid thread but I am in need of your help I want to study something technical but I don't really know what the smartest choice would be I really wanted to study economic computer science but I am afraid, that it will be worthless and I won't earn a lot of money, which to be honest is one of my goals later in life, I only know that I definitely want to study something technical, what would be the smartest choice?
>>
>>8148451
Engineering Physics
>>
>>8148460
Why?
>>
you should learn math and programming perfectly.

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How does she even pull of this kind of stuff so easily?

http://math.stackexchange.com/a/908325/290074
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>>8148427
it's a fucking bot
>>
>>8148427
Holy shit I love her
>>8148437
She can out-integrate Mathematica. Anyway why would anyone set up a bot to do this?
>>
>>8148442
to get dick picks by math professors and blackmail tenure out of them

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We can prove that for any finite group of order n, it must be true that the order of any of its elements divides n. However, does there always have to be an element of order d for all divisors d of n?

I tried proving this in general and for Abelian groups, but couldn't quite get there.
>>
>>8148416
Obviously not you cretin, that'd imply all groups are cyclic.
>>
>>8148416
the strongest result in this sense is Cauchy theorem
>>
The group [math] (\mathbb{Z}_2)^3 [\math] is an abelian group of order 8 with no elements of order higher than 2.

I don't understand.. how can the SPHERE be the SHADOW?
>>
Like a rainbow man. The sphere is a shadow of particles. The thing just has the necessary ability to make its shadow curved and spherical due to the nature of how the particles reflec light.

You have to remember that AT fields exist there so there could be any number of surfaces for light to bounce off and form a sphere
>>
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>>8148345

leliel
>>
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>>8148345
It's a shitty anime from the 90s. Science isn't it's selling point.

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It's 2016
Why haven't we solved turbulence yet?
>>
>>8148206
Because it might not have closed form solutions.
>>
Turbulence is caused by wind, which is caused by tempurature changes in the weather, or by Induced Drag. All you can do to treat it is by being a good pilot and maneuvering through or around it.

Induced Drag is a natural byproduct from generating lift, and your pic related is whats called Wing Tip Vortexes. Theres minor things you can impliment onto the wing tips to help stop those WTVs but i think it is just natural. I'm interested in figuring out how to utilize WTVs for the plane.

One idea i have is setting up spinners that catch the air current and spin...
>>
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>>8148333
>Turbulence is caused by wind

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Preparing for a Japanese Scholarship exam, it consists of Chemistry, Physics, Math, English and Japanese.

My biggest fears are the scientific parts, Chemistry, Physics and Math, I love science but I am a student who just graduated High-School from a 3rd world curriculum which is based on memorization and vomiting out all the memorized info on a test paper at the end of the school-year. Because of this, and Shit teachers, I have shit foundations in science generally as well as math, but I love reading about science and the application of it. What do I do to prepare for...
>>
>>8148134

just go to college in your own country.

its not worth going to a foreign country where you already admit you have a poor understanding of the concepts.
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>>8149176

Don't listen to this guy, OP.

If you want to do it, go for it. There's material free and accessible on everything if you go by a curriculum and look up each theory individually.
>>
>>8148134
It's very difficult taking exam in format you're not used to... especially when you were scoring high on the format you were very used to. I experienced this when I had to quit A level program for america. Knowing what question wants is crucial

Nothing's bad about memorization. How do you even do that in physics? It's all about understanding concepts in physics anyway. Well good luck

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/sci/ I'm moving into and starting college this sunday. I'm going into a physics major and possible a double major in mathematics. For those of your majoring in them right now or have graduated, is there any advice you can give me? I mean specifically for physics and mathematics that is. I have torrented textbooks and all sorts of shit on a drive which I'm going to study with in my free time, will I even have the time or will to do this? I still want to have time for hobbies though and parties. I'm a pretty smart guy but regardless, anyone is going to have...
>>
>>8148115
>>
>>8148117
I have. I'm asking everyone personally. This is why I don't come on this board much, every single time I start a thread, no matter what's it about, I get this response.
>>
I'm from england, but I just finished my first year studying pure physics. If american universities are anything like ours, your first year will be piss easy.

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So help me sort this out
Why are we still sticking to the science meme?
Who cares about the arbitrary and tedious scientific method?
Why are we wasting time with observations and guesswork when we should instead only focus on what we can rigorously derive using pure logic and pure mathematics?

Maybe it's just my math background talking, but who cares about experimentation? It doesn't prove anything. The next experiment can have results that completely invalidate all the previous ones. Why waste time and money on that instead of proving things for real?
It's...
>>
>>8148044
Shitty bait.
>>
>>8148044
Math guy too here but you are just retarded. Good luck proving a new medicine works with just mathematics.
>>
>>8148044
>literally providing a picture of a language that has undefined behaviour

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What happened at the end of the Permian?
>>
>>8148010
it got permiabanned
>>
I permiated your mom too hard
>>
>>8148010
volcanic eruptions elevated CO2 and sulfur dioxide to the point that global warming occurred.
Warming interfered with oceanic currents producing marine anoxia.
Marine anoxia caused blooms of cyanobacteria that then invaded terrestrial environments.
Cyano killed plants and thus destroyed all food webs not based on detrivores.
Mass collapse of food webs destroyed megafauna and marine biotas.

eventually climates stabilized, but by the time it was done almost everything was dead.

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We all know University is a fucking shithole in terms of education standards and information presentation/delivery, its a business construct not a learning environment blah blah blah etc.

Do people usually graduate on time? Its a fucking pain in the ass walking through this pile of hot coal known as University, feels like absolute dogshit subjecting myself to this ridiculous scam, yet its essential to get

>Muh degree
>Muh employability

And CS major here.

Sigh it just feels like a fucking...
>>
>>8147866
University is just a sure path to mediocrity.

Those who do big things rarely depend on it. So if you plan on doing big things skip the schooling and employment track. This is a self-sorting system. People that are going to make it without schooling usually see through the system and have a plan to bypass it.

if you don't have a plan to get what you want yet you might as well stick to the program and do the chores necessary to gain employment. It's less risky than striking out on your own, that's a fact.
>>
>>8147882
first post worst post
>>
>>8147866
>If just bear throuhh uni and get a degree surely I'll find employment!

Why is our generation so fucking retarded?

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Thoughts on what the mission to Jupiter arriving next month will find?

I feel like there has to be some solid core, but other than that I can't imagine what they'll uncover, seeing as we can't really do anything with the planet, just look.

Short vid on Juno here: https://www.youtube.com/watch?v=tV6fOkIgqD4
>>
Well NASA says their reason is to understand how the first planet formed. According to pretty much everyone, that's Jupiter. So in a few years we might know how a solar system forms following the birth of a star.

That or NASA is secretly speaking to the aliens.
>>
>>8147782
ILLUMINATI
>>
http://www.space.com/12472-juno-probe-spacecraft-jupiter-nasa.html

Anyone qualified to speak on the economy of the US right now. I hear it's currently worse than 2008 and there is a recession or depression that we are in that will finally become apparent in the coming months. fear mongering or is there some truth to this???
>>
>>8147727
I'm not really qualified.
I am however a small business owner. I can say with some confidence that markets have changed since 2008 and show no sign of going back. To me it feels leaner. Companies are less willing to spend. Many are still making cuts and struggling to stay afloat.

I think we should seriously consider the possibility that the economy we enjoyed in the late 90's and early 2000's was a fluke, and we may never see it again.
>>
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>>8147727

I told my parents to invest in gold before 2008, and they did, so I now own more than 60% of the US citizenry, which is not a lot.

Our system will crash again and very soon, the market is more chaotic than it has ever been so invest in things that may will benefit from the majority of people suffering.
>>
>>8147727

We live in a fraudulent economy, which is no longer a capitalist structure.

The same institutions that caused the global financial meltdown, are still up and running, and they are engaging in the exact form of risky speculation that caused said meltdown.

We're all fucked.

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Why do people believe in pseudoscience over scientific reason?

what pseudoscience disgusts you the most?

Inspired to make this thread because flatearthers are funny and there one on /x/ giving me a real laugh
>>
>>8147458
There is no real distinction between pseudoscience and science

When you realize this, it will all make sense

What matters is whether you can successfully implement the knowledge, e.g. whether you can make predictions with the knowledge. That is and always has been the marker of useful knowledge. We just apply the arbitrary signifier of "LE SCIENCE" to whatever works and "LE PSEUDOSCIENCE" to what doesn't. It's a big cultural meme and needs to end.
>>
>>8147466
what was that?
>>
>>8147478
that chart is meme tier for people who can't into philosophical thought

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