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Archived threads in /sci/ - Science & Math - 17. page

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Democritus

Is he, I dare say, our guy?
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>>9152013
>religions of his time were evil and that neither immortal souls nor immortal gods exist
the original fedora
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>>9152016
>>>/r/the_donald
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>>9152017
y-you too

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I keep getting a solution of
P(x,y,z)=P(10-0.5z,4-0.5z,z)
4 posts and 1 images submitted.
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>>9151995
fuck off with your grade school homework problems
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>>9152049
Solve it using Gauss-Jordan elimination.
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>>9151995
Write a program to do Gauss-Jordan elimination for you, plug the numbers into that.

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https://www.youtube.com/watch?v=DKfGC3P9KoQ

>butthurt scientists can't prove him wrong so they use the pseudoscience meme ignoring the fact his research is based on archeology real world class journals
;)

wow, how can this board recover.
3 posts and 1 images submitted.
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>hindu creationism
What's wrong with good old Christian creationism?
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>>9151915
the bible is a retelling of ancient sumerian myths.

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I heard the coordinates of time and space do interchange in a black hole. What does this mean to an observing person assumed you're still alive of course.
4 posts and 1 images submitted.
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Brainlet here but I think that means once you are behind event horizon you stop in space but move faster in time, so if you would exit black hole (which is not possible) and return to Solar sistem Sun could be Red Giant. Or even white dwarf.
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>>9151880
https://youtu.be/KePNhUJ2reI

Would recommend above link. Yeah, it's PBS, but this is what pop sci is supposed to be: small chunks of actual science, instead of a lot of watered down or misrepresented scientific philosophy. So watch the video and see if your question isn't answered.
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>>9151880
You heard wrong. Time and space aren't separate things.

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Does burnt/smoked/charred food cause cancer?
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Anything with oxidized organic compounds and combustion products can be carcinogenic. The chances will largely depend on what you're ingesting, how much, and for how long. Smoked meats can increase your base cancer of things like colon cancer by a very small mount if you eat them regularly.
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>>9151909
This.

The media poster boogeyman is acrylamide, which, unless you eat 5 kgs of burnt potato chips per day, is pretty much harmless

The dose makes the poison
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>>9151878
Not really. Just be careful with burnt red meat, although if you care about cancer you're better off not eating red meat in the first place.

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So is m-theory the idea that our space time universe exists alongside other universes like a cell membrane
3 posts and 1 images submitted.
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>>9151773
What is 'spam', if not an abstraction of God being incapable of granting every desire at once?

Hello E-mail.
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>>9151773
>taking meme-theory seriously

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>red dragon to mars postponed indefinitely

>SpaceX tells NASA it is slowing down Commercial programs

Who else saw this coming the whole time? The commercial spaceflight programs has a hard ceiling on income. People only need so many satellites. You can't get any profit from going to space.
4 posts and 2 images submitted.
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>>9151650
bait. the number of satellites, money, and companies getting involved in space is growing at at incredible rates. new markets are opening up and old markets are seeing an increase in competition. multiple companies are even working on creating constellations of hundreds to thousands of satellites in orbit.

red dragon is changed because of technical issues, not monetary.
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>>9151650
Elon just sent a hurricane to kill one of his competitors.
>>
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>>9152088
based elon

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Is there a way to self-teach Elec Eng? At least on a basic level, which scientific-specific fields would you recommend to study? All Calc, some Physics?
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Actual electrical engineering to the level of a qualified degree-holding professional is not attainable alone. You need lots of lab experience to supplement book learning.

You need calc 1-3, Differential Equations (big time), linear algebra wouldn't hurt

You need to know electromagnetism (obviously) and kinematics is a good idea.

I'm a senior about to graduate in ECE btw.


If I had to recommend a self learning flow I would go differential calc -> integral calc -> kinematics & electromagnetism -> multivariate calc ->circuit analysis (hard to really get into without a lab), diffy Q (maybe in tandem with analysis)

This will bring up to roughly a fresh Sophomore level EE student.
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>>9151487
Thank you! Since your a senior I have to ask, do you like it? I hear too many people bitch about it and switching later on
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>>9151492
At my university my incoming class in ECE was roughly 7,000 and now as a senior we are roughly 1,000. You sink or swim, you're passionate about it or you're not. That's all there is to it.

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Where I can read about the translation of the notation for ChEMBL_23? I understand something like "<" or "=", but what is "(-)", ">>>" or "=~~"?
4 posts and 1 images submitted.
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(-) looks like a poor mans Theta symbol
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>>9151442
it's an EMBL page, they have tons of documentation and online help available
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>>9151471
I know that I'm dumb, but I can't find it in the documentation.

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https://leangsimschoolboy.files.wordpress.com/2013/09/student_solutions_manual_for_mathematical_methods_for_physics_and_engineering.pdf

Can someone explain how the latter part the answer to this question is worked out? Picrelated is the question and answer on page 67 of the pdf but there's more below it.
5 posts and 1 images submitted.
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>>9151310
the latter part meaning how [math] \sum_{n=1}^{\infty} \frac{1}{n} [/math] is divergent?

see if you can find any way to show that the sum adds up the same number infinitely many times.
i'll give you a hint:
[math] \frac{1}{3} + \frac{1}{4} > \frac{1}{4} + \frac{1}{4}[/math]
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>>9151325

Thanks but by latter part I meant the explanation in the pdf immediately below what's shown in the picture. the r>=2 part
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>>9151343
look at this and see if you can figure it out
[math] \frac{(n-r)!}{(n)!}, r \ge 2 \implies \frac{(n-r)!}{(n)!} \ge \frac{(n-2)!}{(n)!} = \frac{(n-2)!}{(n)(n-1)(n-2)!} = \frac{1}{(n-2)!} [/math]

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>going from the stages in order of: (1) scavenging food, (2) to cooking our food, (3) to having plentiful sources of cooked food--made us stronger, smarter, nourished, and prettier.
Going by that logic, would obesity be the next stage in the human evolutionary process?
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no, the next stage is global adoption of soylent
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No. Eating extra food instead of storing it for the future is a sign of stupidity

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Who else /firstdayback/ here? Currently sitting in the library bored as shit waiting for the same exact syllabus lecture again just in a different class.
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I am /firstdayback/. So much shit to do the first day, but just got to sit down and eat/shitpost.
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I've graduated a while ago but I always remembered the first week back on campus as super /comfy/. Why don't you go to the campus cafe and try to dick a freshman qt op?
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>>9150804
/firstdayback/ reporting in. My first class wasn't nearly as shitty as I was expecting it to be :^)

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If an f16 ignited one of the rockets affixed to its wings would it just make the f16 go faster?
3 posts and 1 images submitted.
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it's additional thrust - so why wouldn't' it?
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>>9150767
yes
https://www.youtube.com/watch?v=BEh5ChbJKAQ

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Humans have twice as many female ancestors as male ancestors. Have genomes of other species been tested for ancestor gender ratios? If yes, is the ratio found in humans uncommon among animals, especially primates?
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>>9150577
Because of incest? Idk
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>>9151245
Because of rape.

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How do you cope with being deluged with potential things to learn?

Shitloads of textbooks. Shitloads of topics you have to pretend to care about.

I know that the

As an example I plan to go through some of Strang's linear algebra book. But even within that I won't bother doing all the exercises and it will make me feel bad. And I am going through SICP because /g/entoomen tell me to, though I may stop. And I should find somewhere to learn basic statistics. And I feel like a retard for barely ever having done proofs in maths. And later on algorithms, data structures, and actually making real world programs.

I really fucking wish I had done maths or physics at university instead of engineering.
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>>9150415
>I won't bother doing all the exercises

Rarely do people do all the exercises. Most do just a representative sample.
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>>9150415
>How do you cope with being deluged with potential things to learn?
Specialization? You know, what everyone else does?

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