Archived threads in /sci/ - Science & Math - 2128. page

>>7683869

none of those

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Psssst hey kid, you wanna make nanomachines and shit? Then do chemistry kid.

Also, fuck you biology. Synthetic chemistry will soon exceed biology in what's possible. Fuck you proteins, you're too hard to engineer. Fuck you DNA nanotech, you're too weak.

>>7683956
that gave me an erection. we nano-sewing machines now?

>>catgirls or foxgirls?
>>sex slave pets?
>>penis enhancement

Poe's law strikes again.

some real news/info on it

In May, the U.S. Academies launched a major initiative to inform decision making related to new gene-editing technologies that could lead to promising, novel ways to treat disease but that also have given rise to concerns, particularly about their potential use to modify the human germline. In addition to the summit, the initiative will include a comprehensive study of human gene editing by a separate committee, which will issue a report next year with recommendations to guide the responsible use of such research.

"Human gene editing offers great promise for improving human health and well-being but it also raises significant ethical and societal issues," said Royal Society President Paul Nurse. "It is vital that we have a well-informed international debate about the potential benefits and risks, and this summit can hopefully set the tone for that discussion."

Chinese Academy of Sciences President Chunli Bai said, "Both Chinese scientists and the government are aware of the pros and cons of human gene editing. CAS scientists have organized a panel discussion and coordinated with related government agencies for regulatory policies on this issue. We would like to work together with international communities for the proper regulation and application of such technology."

"We are very pleased that our counterparts in China and the U.K. are joining us in this effort," said NAS President Ralph J. Cicerone and NAM President Victor J. Dzau in a joint statement. "Their co-hosting of the summit reflects a growing recognition among global scientific and medical communities that we need to work together to develop a better understanding of the implications of advances in human gene editing so that more informed decisions about the use of this research can be made worldwide."

MIT technical review article discussing the upcoming summit and some other things.

http://www.technologyreview.com/news/543541/how-to-really-engineer-a-human-baby/

worth a read

>>7683759
Because they are anti-intellectual animals who only want to waste away their worthless lives with shallow entertainment and sex.

>>7683759
Bettering yourself in STEM requires time and effort. For a lot of attractive women they have lived their lives with men giving them what they want for being attractive. So why do something that requires effort when you can just take handouts?

>>7683759
Part of it is social stigma. A lot of people seem to think the only way to be good in a STEM field is to be an introvert or a creep, so they avoid it because, "Ew, why would you want to be around THOSE people?"

>>7683753

no

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"easy" is relative. For example, it is easy for this goat to climb this cliff, but it would be hard for you.

>>7683762

hang yourself please

>>7683752
It's how your directional hearing works too. It's also why you can't tell what direction sound is coming from underwater; the higher speed of sound makes the time difference too small for your brain to find the direction of the source.

>>7683758
nice comment, tnx

>>7683758
I thought it's because you hear something louder in one ear than the other? Fuck you bro

>>7683715
Any book on electronics. Any book on electrodynamics. Any google search.

>>7683866
If it's not a link or series of useful words you can fuck off into the direction ya came from.

>>7683715
http://4chan-science.wikia.com/wiki/Electrical_and_Electronics_Engineering

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/sci/ has got no clue about proofs.

How do I prove that?

>>7683708
Interesting book. I have a question but I won't make a new thread about it because it is probably irrelevant.

As someone who is doing proofs in school in things like linear algebra, I decided to check the book out and see if I'm not retarded. I skipped the walls of text and went immediately to the examples.

See this:
>Example 3.1.3. Suppose a, b, and c are real numbers and a > b. Prove that if
ac ≤ bc then c ≤ 0.

So I figured a proof in my mind that went like this
We know that a > b but when multiplying the inequality by c we see that the inequality changes from a ">" to a "<" and this only happens when you multiply an inequality by a negative number so for ac < bc to be true c < 0 must also be true. Then for the <= case if c = 0 then ac = bc for any real numbers a,b. So ac <= bc if and only if c <= 0.

I feel pretty satisfied with my proof so I read the solution given for the example

>Assume the contrapositive, c > 0. then if you multiply a > b by c you get ac > bc so the contraty can only be true if and only if c <= 0.

It looks good but could any anon tell me if my proof is also correct? Is it sort-of correct but lacks rigor? Am I retarded? Should I drop out of pure maths already and study sociology?

>>7683708
There is no fast way, and if you do it fast you'll leave gaps along the way.

The four years of mathematical training are pretty much devoted to teach students how to write proofs. It's hard for everyone, there is no easy road
Keep solving problems. That's all there is to it.

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>This guy walks into the club and optimistically slaps your (Newton's) autistic ass.

What do?

>>7683707
I contact my friends in the government and tell them to suppress your version of Calculus.

>>7683702
lol no

>>7683675
>Anyone else do this?
I masturbated while reading a topology book once. Didn't remember much.

No. Math doesn't give me any sexual feelings. It's like driving a car feeling actually.

>>7683675
fuckin yes.....The only way I motivated myself to do my long ass homework at the time. It was weirdly satisfying.

>I'll leave this as an exercise

>>7683658
>annoying nerd smugly raising his voice to correct an error the professor made

Not maths, but my Edynamics profs puts a vector arrow above the volume infinitesimal

Yes. You use a spectrometer to identify the spectrum of light and then associate a sound frequency with each peak in the spectrum.

>>7683642
Depends on your definition of convert

If somewhere along the line on your internet connection, there's a fiber optic cable, then any sound you download off the internet is converting light to sound, with a few steps in between.

pewdiepie

>>7683620
lsd

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>>7683620
ViHart, Numberphile, Veretasium, Periodic videos, thunderf00t & sixtysymbols

>>7683513
>Baby's first zadachnik

>>7683514
Can't find a decent translation and I don't fancy learning Russian

Is this pop sci or not pop sci?

>>7683440
>Applications

Pleb.

Science is about understanding the universe not making gadgets.

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- Molecule models, explaining different "states", which let us compute reaction rates.
- Solid models of crystals/metals, letting us compute specific heat capacities, conductivity etc.
- Atom-photon models, theories of the [L]ight [A]mplification by [S]timulated [E]mission of [R]adiation

etc.

> what are transistors?

>>7683380
Memes.

>>7683380
What's the point of making this thread? What does it matter what a few anonymous posters think.

>>7683386
I'm really just looking for good sources hoping you could help, I'm pretty new to the topic.