Archived threads in /sci/ - Science & Math - 1044. page

>>8566351
it means that it's difficult as fuck for cripples to facebook

>>8566351
It means hawking uses his computer to shitpost like any other person with an internet connection

>>8566351
He likes dogs.

define chemicals

>>8565948
nigger what the living fuck are you on about

>>8565958

it would be like a huge chemical battery were you constantly replace the depleted chemicals

By swallowing some cum

>>8564429
cum is slightly basic so this should work just fine

>>8564413
Brush your teeth?

>>8564317
Under these definitions energy is defined as force per distance [math](J=kg(m^2/s^2))[/math]. This means that sum energy directly correlates with the product of a mass (m) and its relativistic velocity (c^2)

>>8564337
That hurt to read

>>8564344
mass increases as the sum of energy increases

a squared positive function creates a line on a graph moving from bottom left to top right.

>>8564219
Large objects wind up like that because spheres pack the most volume in the least amount of space, and since gravity packs things together, the causality is intuitive.

That said, large ships are much less dense than a rocky planet, but if it was on the scale of, say, a gas giant, it may be desirable to build outward from the center in a spherical fashion to deal with the material stress profiles due to gravity, but ultimately, it's not essential for a very large ship to be spherical unless it's on the scale that you need the toughest materials available just to make it work. Other shapes would need tougher materials because there would be irregular bending stresses, stronger in some areas and weaker in others. A sphere is how best to rectify that irregularity.

So large ships don't need to be spheres, but the very largest structures do because of the limits of the strength of its building materials.

>>8564246
>that because spheres pack the most volume in the least amount of space
what exactly do you mean by space? surface area?

>>8564219
>if we invent some sort of gravity device, it would be more convenient for the sphere to spread the waves evenly wouldnt it ?
the gravity generators in SW are capable of working on pretty short scales, under the floorboard basically.

consider the turret passages in the millenium falcon and how anyone in the turret experiences a horizontal axis that's actually the vertical axis of the ship

>>8564116
JNF is useful to prove theorems. In real life you you don't want to compute it, it's too numerically unstable.

>>8564130
But in my diff equations class we used it a lot to solve some systems of equations.

Fucking engineers. Kys and never try to learn math again fagglord.

>>8563499
Depends on the dose, or is it the absorbed dose? I never remember, theres so many units and measures in medical physics.

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not very unless you are exposed to extreme levels that are not found either in nature or controlled medical imaging, AKA a nuclear reactor melt down and you're standing right next to the plant, or an atomic bomb being dropped in your town. even traveling to mars would more than likely not pose any risk from ionizing radiation. you are always exposed to radiation living on earth, and medical imaging is rarely to a level of any concern. only the most hardcore radiology studies on a patient will deem worthy any sort of discussion of the risks from the ionizing radiation, but even then it is truly unnecessary and only scares patients.

a young adult could literally go 10,000 lifetimes of getting a routine CT scan before possibly having any effect on their life, statistically, and that using conservative, worst-case-scenario models. the results from the dozens of tests we've done always come to statistical insignificance that we can't even verify as being related.

even with atomic bombs being dropped, excess cases from exposures under 100 mSv are exponentially decreasing the closer you get to a 5 mSv dose(in which we see no excess) in comparison to above 100 mSv, where effects are actually statistically significant although small. We have very recently shown that to even very radio-sensitive parts of the body in the elderly who are even more radio-sensitive, doses under 10 mSv do not even damage our DNA to the best of our ability to detect such markers in 2016, so it is safe to assume that anything that isn't you being involved in some catastrophic accident will not effect your lifespan at all or cause any science-fiction tier mutations. It's basic science. our bodies have really good defenses against ionizing radiation up to levels that we very rarely have seen in history(chernobyl, fukushima, hiroshima, nagasaki) and especially anything naturally occurring on earth and controlled medical imaging.

So long we have an intact atmosphere we are safe.

Too bad that the Mars lacks one.

When it becomes ethical, so never.

>>8563220
>ethical
whats that gotta do with science ?

what would be the point of human cloning

>>8561876
oh I guess the USA has the most field medals, followed by France for math

No. France likely has the best mathematicians given their high standards and rigour for it at higher levels.

Engineering is a broad field with many possible options for the futher carrer.

>>8561219
yes
all you need to do is practice more
think of it like learning to play a musical instrument
at first you can only play what's written in front of you after a long time spend rehearsing, then slowly you will learn to sight read, and with yet more effort and time you'll be able to improvise
do a little a day and try not to skip any days

>>8561282
After reading the OP, I was hoping there would be a lengthy discussion going on itt. But this is basically all I was looking for anyway.

Yes OP you can!
I used to be horrible at math and was laughed at by my peers and even teachers.
Practice, patience and determination is the key to what your looking for.

>>8540241
Whatever I can steal from my students. Barely use a pen for anything

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>>8540241
>live dangerously

DAILY REMINDER THAT IF YOU DO NOT DO MATHEMATICS IN PEN THEN YOU ARE A CERTIFIED PUSSY FAGGOT WITH A TINY DICK.

Shitposting aside, pic related for proof. When you are a mathematical genius you don't need pencils. Those are all midterms and they are all 100%. Top is from calc 2 and bottom is from number theory, all from this semester boi.

>Favorite writing instruments
Pen with a powerful black ink. One that will really mark the page. From my picture check out the bottom right and bottom left tests, that is the kind of ink I like.

>Favorite paper
Any paper that will look good with my ink so mostly white and also has to be tough because my ink can damage thin paper.

>Note taking methods

I only copy theorems and definitions, no proofs or examples. That way you keep things compact and makes it easy to study. If you know all the definitions and theorems then you literally cannot fail anything.

>show me some of your work
pic related boi

>gentlemanly penmanship

Oh...

Oh...

Well... you know. You can't be perfect at everything you know.

>>8540274
For some reason my shit got flipped so my examples for best ink is top left and right.

>>8566550

I agree that you may self-teach many things. I disagree that self-taught knowledge is as valuable as degree-certified knowledge in modern society.

No matter how you talk yourself into believing that you're fine without college, the likelihood of you making the same living and career as the person who did not go to college is almost non-existent. If you want to work in a STEM field, go to college; if you just want to know about STEM topics, feel free to teach yourself.

>>8566550
You can do that with math and CS, not with natural sciences. The lab component is very pronounced in proper science degrees.

not quite yet. assuming you don't go to a shitty university you will benefit from

>research opportunities
>internships and university resources
>mentors
>professional and expert work environment
>expensive equipment and laboratories
>practice socializing and collaborating skills
>rigorous course load

also nobody will give you the time of day you don't have a degree (mostly)

Suppose there exists a time [math]t \,\in\, \mathbf R[/math] at which science [math]S[/math] is outdated.

Then there exists another thing [math]T[/math] such that [math]T[/math] explains the world better than [math]S[/math].

Then it has been proven that [math]T[/math] explains the world better than [math]S[/math].

But proving that [math]T[/math] explains the world better than [math]S[/math] requires logic which is a subset of [math]S[/math] as a subset of mathematics which is itself a subset of [math]S[/math].

Therefore the validity of [math]T[/math] depends on [math]S[/math].

Therefore [math]S[/math] is not obsolete which contradicts the assumption that [math]S[/math] was obsolete.

Therefore for all time [math]t \,\in\, \mathbf R[/math], [math]S[/math] is not obsolete, Q.E.D.

>>8564815
What a waste of time..
You invented a story and proved it wrong. Congrats!

>>8564815
>Then it has been proven that TT explains the world better than SS.

lol pathetic

What.

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>>8564392

Biology will be in the 21th century what Physics was for the 20th century

Computer science and neuroscience must merge into a single field first.

determinants of matrices of order 2 and 3, yes.

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>>8563632
Wrong. They should be taught right in the middle.

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>>8563628
It depends on the goal of the course. If it's taken by pure math majors, then sure teach them later, but if the course is mostly engineers or cs majors then you're depriving the students of must have knowledge.