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/sci/ - Science, Technology, Engineering, and Mathematics

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New Textbook/Book Request Thread deadbabies ## Mod ## 13/08/25(Sun)06:03 No. 15270 ID: f34135 [Reply] Stickied

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First off, hello there, I'm deadbabies, and I will be taking over as /sci/ moderator. Rules will remain the same. Please use the report function if you see posts that violate the rules, but also do not abuse it.

I have officially expanded the scope of /sci/ a bit. You may discuss Science, Technology, Engineering, and Mathematics here now. No science is discriminated against as long as it's of the peer-reviewed variety. If someone wants to discuss Anthropology or Social Science, by all means, let them. If you do not like it, just don't post in the thread.

The IRC channel #/sci/ is now (finally) re-registered and I am running as operator on here. Feel free to stop by and say hi. I do leave my computer idling on IRC, so check back or leave me a message if you have any ideas, suggestions, or just want to tell me off. You can get onto #/sci/ by joining the server irc.7chan.org at port 6667. You can also use SSL at port 6697 but you will have to set your client to accept invalid certificates.

ADDITIONALLY and IMPORTANTLY I have had several requests on IRC regarding the old Ebook FTP that we used to have. Unfortunately, the mod who ran it entered the military and no longer runs or maintains it. I have no plans to make another one, but if one of you guys would like to, by all means advertise here.

That being said, I'm just going to leave this link here:


You may find what you seek here.

I will be unstickying the old ebook/source articles thread. Please post any new ebooks/source articles here, and feel free to post any working links from the old thread there; I will eventually be deleting it.
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Anonymous 15/07/02(Thu)01:17 No. 16168 ID: 7d0760

anyone have "a first course of quality engineering" to download?

Anonymous 15/11/18(Wed)03:31 No. 16244 ID: dd0d0b [Reply]

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Is STEM good to go into if I like working with yes or no answers. I dislike working with stuff such English where there are many different viable answers.

Anonymous 15/11/18(Wed)13:50 No. 16246 ID: 00b379

no, stem relies on 'maybe' aka probability

Anonymous 15/11/25(Wed)03:16 No. 16250 ID: e9dfb1

Actually, although it's usually not possible to find the "best" answer, often it's possible to discern the plainly "wrong" answers, and occasionally two answers can be compared and the "better" answer can be determined unequivocally.
For example, even if I can't prove than an algorithm is correct, if I can come up with various tests that would tell me without question that it is incorrect, and all of them fail, perhaps I can have more confidence in its potential correctness.

Anonymous 15/10/03(Sat)18:24 No. 16205 ID: cd3867 [Reply]

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This might seem like an idiotic question, but i'd like to find out the science behind sounds and what not. Such as in music.
For example, if a catchy tune could be broken down into numbers, i would like to know how.
I also know that if it was that easy, people would already be doing it.

To be perfectly honest, i know nothing about the subject, but i have to start somewhere.
So my very first step is asking you guys.
I will learn more in time of course. This was just the first place i thought of asking, because i assume you won't get angry at me.

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Anonymous 15/11/14(Sat)03:48 No. 16240 ID: 46bf64


Anonymous 15/11/21(Sat)08:42 No. 16248 ID: 75e595


You say you know about wavelengths and frequencies but that comment shows this is a lie...

Frequency is inversely proportional to wavelength.

The type of automatic classification and regression you want to do is going to require a lot, and i mean a lot of maths, and yes this is constantly being done already

First, brush up on your calculus and linear algebra. Second learn what Fourier series and the fourier transform are. Understand an FFT.

I highly recommend BradOsgoods class at stanford: http://scpd.stanford.edu/search/publicCourseSearchDetails.do?method=load&courseId=12060

Next. learn about statistical regression and classification methods, logreg, crf, softmax anns, etc. I recommend Andrew Ngs stanford course as a primer http://cs229.stanford.edu

or the watered down version to start https://www.coursera.org/learn/machine-learning
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Anonymous 15/11/21(Sat)08:53 No. 16249 ID: 6a8cdf

good questions. well, when something is distorted, for this example we'll use a distortion effect on an electric guitar or something, the effect adds harmonic and inharmonic overtones or partials [so, more frequencies, more complexity to the actual sound wave] to the signal, and may alter the main harmonics, which creates a different timbre [or.. texture, sort of how it sounds].

OH, got it. check this out --> https://www.coursera.org/course/digitalsounddesign

take that course, it'll teach you a lot.

look into acoustics if you wanna know about sound waves and how they work and how they bounce around.

look into human psychology, auditory processing, and psychoacoustics if you wanna know about how sound works with our brains and why we like certain sounds and dislike other sounds.

look into sound design if you wanna learn how to create sounds yourself.

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Anonymous 15/11/18(Wed)03:47 No. 16245 ID: dd0d0b [Reply]

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Best STEM degree?

plane Anonymous 12/11/18(Sun)21:09 No. 14427 ID: fb908a [Reply]

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Hi /sci/, I'm making a concept of a electric jet. What would you use as a energy storage. It should contain 3 MW/h and weight less then 400 kg.

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Anonymous 15/10/06(Tue)22:04 No. 16214 ID: 6828d1

Rigid airship: use the innate buoyancy to offset the weight of battery.

What's that you say Skippy? It's a jet, not an airship. Fill the internal cavities with hydrogen pockets and it'll have the same affect.

Anonymous 15/10/11(Sun)23:58 No. 16216 ID: f4af1f

Steam, my good fellow and lots of it.

Anonymous 15/11/14(Sat)20:08 No. 16241 ID: 53eae2

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When in doubt, go with nuclear.

Anonymous 15/10/30(Fri)09:01 No. 16232 ID: 7bbbb5 [Reply]

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What do you think of the mini-golf corse I designed for an engineering class?

Anonymous 15/10/30(Fri)14:17 No. 16233 ID: eb1f25

It's more like fiddling during boredom class.

Anonymous 15/11/11(Wed)13:08 No. 16239 ID: bbcc9a

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Universe; infinite or not? (Current science leans toward infinite).

Prefer infinite myself as it allows so much more hilarity to exist

Anonymous 15/10/21(Wed)18:11 No. 16221 ID: 2b963d [Reply]

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You can create a human-level intelligence robot by copying the human nervous system. You can do this either by using a radioactive dye that specifically adheres to neurons, or by injecting the human body with nanites (micromachines) which attach themselves to the neurons without harming the subject and report the location and orientation of the neurons. My idea for actually creating the robot is using a gel for material that melts when heated, then heating it and spraying it with synthetic neuron nanites which swim to their needed positions. You can synthesize simpler versions of neurotransmitters that work with the neuronal nanites to imitate the chemical aspect of the human brain.

If you create nanites that can harmlessly adhere to neurons, this opens the possibility of direct-brain interfaces and stimulation. You can also copy the brain alone to create a computer, just be sure to train the brain of the subject in advance by putting them in a sensory isolation tank/chamber where they have nothing to do except interface with a computer and perform the tasks given to them as a computer would.

I will post again in this thread detailing my up-to-date idea for a superrobot/mecha and my idea for immortality.

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Anonymous 15/11/03(Tue)07:34 No. 16235 ID: 5957ad

>They're the only ones who could enforce regulation.
Why? What makes this particular service different from, say, cash registers?

>But I bet they'd be the first ones to jump on my train so it still wouldn't be a problem.
Do you really think anyone would put their brains in the hands of an unregulated service?

Anonymous 15/11/04(Wed)00:37 No. 16236 ID: ca3ceb

>What makes this particular service different from, say, cash registers?


>Do you really think anyone would put their brains in the hands of an unregulated service?

Fuck yeah they would that's all politicians and the wealthy want. Like I said. Instant labor force.

Anonymous 15/10/13(Tue)10:01 No. 16217 ID: e10895 [Reply]

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Is it possible for there to be higher dimensions?
Do you think that we have higher dimensions?

Anonymous 15/10/13(Tue)17:39 No. 16218 ID: 989472

If by "higher," you mean 4th, 5th, etc., then yes, of course.

We don't "have" them, but they are possible.

Anonymous 15/10/14(Wed)02:21 No. 16219 ID: ca3ceb

Yeah pretty much that.
Thread over.

Anonymous 15/10/14(Wed)05:44 No. 16220 ID: d0a46d


Electrolysis and Renewable Energy Mfats 15/10/07(Wed)09:54 No. 16215 ID: e329a9 [Reply]

Youtube - Toggle Video
  Im currently devoting my time to developing a new form of renewable energy based off of the already-existing Hydrogen fuel cell concept. I plan to experiment using different combinations of electrolytes, anode/cathode materials, voltages/amps etc. Ive started a kickstarter campaign in order to fund the research. To keep things short and sweet, I'm looking for backers to help with my project; anything at all helps! Also, use this thread to share opinions/ideas on fuel cells and how they could be made more efficient. So far my research has lead to the creation of a basic fuel cell, some new concepts and 12,000 volts accidentally delivered directly to my genitals (dont lean on loose wires). https://www.kickstarter.com/projects/718106819/advancement-in-electrolytic-energy-production

Sci-fi 20/Traveller 20 rule book PDF Anonymous 15/10/04(Sun)23:42 No. 16212 ID: 592535 [Reply]

Youtube - Toggle Video
  Me and a couple friends are looking for the PDF collections of Sci-Fi 20 and Traveller 20 roleplaying games.

Could anybody lend us a hand?

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