Archived threads in /sci/ - Science & Math - 1137. page

>>8514268
>What is your thoughts on this recent PBS Space Time video?

I think astronomers should do their thinking for themselves, instead of trying to get /sci/ to do it for free.

Fuckers are getting paid, after all.

What I get from it is that apparently there may be less dark energy than previously thought.

I mean, constant expansion still requires a cosmological constant, i.e. dark energy

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I've read the actual paper and it's total crap. They're abusing the press release system. All they do in this papers is reanalyse a single cosmological data set (Supernova Union 2.1) using different methods than everyone else and find no acceleration is only rejected at ~2.8 sigma. (Convientently it doesn't reject their pet model and no it was not blinded). They have made a big fucking deal about this but it's nothing. Take a look at their main plot, no acceleration is the green line, the data favors acceleration. The major issue is that there are dozens of cosmological datasets such as Planck Cosmic Microwave Background Constraints, Baryon Acoustic Oscillation data, local Cepheids, redshfit space distortions... They have ignored all of these when in real cosmology we combine these different datasets to find out what the joint constraint is. So even accepting their work dark energy is still very necessary in cosmology, you don't get to ignore the vast majority of data and then make big claims. Even their bullshit logic for rejecting this data doesn't hold because they admit in the press release that there is another test (the ISW effect) which meets their "dynamical" definition (also bullshit) but they ignored that data too.

They try to make a big deal that in this wider dataset the significance hasn't improved over smaller ones but that is utter bullshit, they haven't used their method on the smaller datasets.

China fed all our best ones to livestock and bred a superplague we can't cure, probs gonna b fine though lmao

>>8514243
Antibiotics provide an evolutionary selective pressure that results in more resistant microorganisms.

>>8514243
We should stop using them and save them for very serious illnesses, and get the public educated about how they DONT WORK on viral infections.

Since the cascade of new and more advanced antibiotics and further efforts to get better ones has been underway, we've noticed an improvement in the effect of the oldest antibiotics, Penicillin for example hasnt' been used widely since the late 80s and its starting to pay off.

If we reduce antibiotic use, they will become more effective because bacteria have limited ability to acquire resistance, if they're not being pressured by the antibiotics killing them, they will eventually lose resistance to it.

basically no because the universe is a chaotic system.
The supercomputer pretty much have to be able to simulate the whole universe. he'd also have to know the current state of the universe and how each physical law can be reversed.
But to be more realistic, I think it woulf mostly be ebough to simulate the solar system backwards.
But that is still impossible.
What I could imagine are VR scenarios where you can experience a specific time with extremely high detail and historical accuracy. A computer could realistically place you in the 18th century and have you experience some story that could have happened in the 18th century. It wouldnt be a stpry that actually ever happened but one that you generated in a high detail approximation of the 18th century. So you might hear people talk about the french revolution and live in old paris but each detailed interaction with your surroundingd would be made up.

>>8514310
Well it would only really need to simulate what conscious observers are experiencing, it wouldn't need to simulate distant stars and galaxies

>>8514215
Wouldn't it just be easier to timetravel?

>>8514004

This stupid thread

reading? i'm taking a full course load. how do you have time to read for leisure unless you're NEET

Why reinvent the wheel? Anyways, we're not even close. Check back in like a thousand years.

>>8513878
k I will, thanks for the tip

What's wrong with regular trees?

>>8513747
Stewart Calculus?

Easy as fuck: Calculus 1 by Stewart
Mid level: Spivak
Hard as fuck: Advanced Calculus by Lynn H Loomis and Sternberg

>>8513747
Just read Apostol, nigga. You literally do not need any other calculus book. I mean if you really are autistic enough to want to learn absolutely everything about calculus (you shouldn't be).

>>8513673
What really is precalculus? Polynomials and stuff? You probably don't need a book, there are plenty of online materials

>>8513677
fundamentals, functions (exponential, logarithmic, trigonometric), polynomial, limits, vectors, sequences and series

>>8513686
I've heard good things about Cohen. What's your end goal?

pretty much autism

>>8513597
because they're a similar shape? idk but this is a shit thread and you should feel bad.

>>8513602
great post goym

>>8513250
> The degrees are like dunce caps

You know how on /fit/, some people develop body dysmorphia and start saying ridiculous things because of their extremely skewed perspective?

>>8513250
Science is built piece by piece. Groundwork is often done by those "shit" universities and then the final, more abstract pieces are put into place by the top tiers.

Not everyone can be the best. We need average workers, too. A Ph.D. in EE from MIT isn't going to be satisfied maintaining a power plant but a bsce in EE from state university will be.


You're welcome, faggot.

>>8513250
It's 2016 and all information is freely available on the internet. There's no advantage from a geographically centralized building of learning, no matter how "prestigious" it is. All knowledge is the same and expensive/competitive unis only exist for the purpose of perpetuating this elitist classist system we all are unfortunately forced to live in.

Fuck off OP you conceited ass. Science has no use for you.

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Yeah, because it only "exists" in the finite present as a construct that most people predict poorly.
>sage in all fields

>>8513202

we dont know the future because it doesnt exist
we can only know the past

i predict the end of this post will be 7

>>8513058

What's your math level, chem level, and physics level?

>>8513058
quantum chemistry by mcquarrie is bretty good

>>8513092
0 in all 3, well HS level math

>>8512865
Radio transmissions are delayed due to the finite speed of light, not Planck's constant.
Heat and pressure do not cause nuclear fission, being hit by neutrons does.

Imagine you have two clocks that measure time using photons. They stand upright and the photons move on the y-axis and get reflected by mirrors. Every time a photon hits a mirror the time count of the clock that registrated it goes up by one. The numbers of photons and the lspeed of light are always the same. Now one clock remains where it is and the other one moves by the distance x while its photons (photons b) move by the distance y on the y-axis. The photons b now have moved by sqrt(x^2 + y^2). If time went by the same pace everywhere this wouldn´t be possible because the speed of light is ALWAYS the same (if it stays in the same medium). It means there are two initial systems with different time (S(steady) and S'(moving)). The time diletation would be t= t' / sqrt(1-v^2/c^2)

>>8512865
>I don't understand relativity

What's to understand? It's bullshit.

The only reason anyone "Agrees" with relativity is to keep their job.

>>8511878
Take a 10mg daily cycle of sunifiram for about a year.

>>8511878

Obviously you just need to forget how to speak.

>>8511948
Can you please elaborate about your experience?
Mind you, I'm willing to do it if it really works.

>>>/soc/

> University
Universitat de Girona, Spain

>Major
Computer Engineering

98% males, the only female is an ogre. Teachers are high school tier. Everyone is a normie.

For example doing the four color theorem someone raises their hand:

"Sir, do we have to bring pencil colors in order to study this theorem?"

Everyone laughs.

Doing Data Bases:

"I connected the TRUCK entity to the INTERNET entity"
"But trucks don't have wifi!"

Everyone laughs.

Mfw stuck with these people for four years.

>University
Universidad de Castilla-La Mancha, Spain

>Major
Chemistry

We all make drugs all day and spend the time using carbon tetrachlorure on all guys lolz

Jk we all fail exams and go on parties drinking all the alcohol we can

everyone's happy

>>8509701
f

>>8509701
Not that long since the last time this happened, right?

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>>8509701