-  [WT]  [PS]  [Home] [Manage]

  1.   (new thread)
  2.   Help
  3. (for post and file deletion)
/sci/ - Science, Technology, Engineering, and Mathematics

Join us in IRC!

•This is not /b/ or /halp/. Tech support has its own board.
•If you are not contributing directly to a thread, sage your post.
•Keep the flaming at a minimum.
•Tripcodes⁄Namefags are not only tolerated here, they are encouraged.
•We are here to discuss sci-tech, not pseudoscience. Do not post off-topic.

•♥ Integris

  • Supported file types are: GIF, JPG, PNG, WEBM
  • Maximum file size allowed is 5120 KB.
  • Images greater than 200x200 pixels will be thumbnailed.
  • Currently 501 unique user posts. View catalog

  • Blotter updated: 2011-01-12 Show/Hide Show All

There's a new /777/ up, it's /Trump/ - Make America Great Again! Check it out. Suggest new /777/s here.

Movies & TV 24/7 via Channel7: Web Player, .m3u file. Music via Radio7: Web Player, .m3u file.

WebM is now available sitewide! Please check this thread for more info.

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

File 137740339172.jpg - (401.45KB , 1680x1050 , titanfalsecolor.jpg )

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.
Message too long. Click here to view the full text.

14 posts and 2 images omitted. Click Reply to view.
Solutions Manual to E&M, 3rd Edition by Purcell Anonymous 16/11/19(Sat)00:05 No. 16384 ID: 1ae570

File 147951030462.jpg - (27.55KB , 406x500 , Purcell 3rd Edition.jpg )

Looking for the the solutions manual to Electricity and Magnetism, 3rd edition by Purcell and Morin. The problems are much more difficult and numerous than in the previous two editions, making it one of the best problem books on the subject. Was able to find the solutions to two analogous books in Classical Mechanics:



Sadly, all my searches for the solutions to the E&M book have been fruitless. It's the last manual that I need to complete my collection.

Logic is the 0-truncation of n-Category Theory. Americium 16/11/20(Sun)05:20 No. 16385 ID: ed8b6e [Reply]

File 147961565686.png - (75.30KB , 500x562 , true_false_paradox.png )

Let's see you normies try to logic your way out of this one.

2 posts omitted. Click Reply to view.
Anonymous 16/11/21(Mon)02:24 No. 16388 ID: ef54e2

Questions have no truth value. Only statements may be true or false.

Americium 16/12/03(Sat)03:37 No. 16395 ID: ed8b6e

?(x) := (x ∨ ¬x) : B→(B⊗B→B)

G(x) := ?([Im(G)=⊥]) : B→((B⊗B→B)→(B⊗B→B))




Anonymous 16/12/03(Sat)21:40 No. 16396 ID: b555dc

File 148079761521.jpg - (181.56KB , 1330x748 , TB.jpg )

The answer to your question is F(ab)

watch as the snowman comes back to life jsnap 16/11/29(Tue)02:28 No. 16393 ID: 2af0d7 [Reply]

Youtube - Toggle Video

PISA 2015 A SNEAK PREVIEW /sci/ Volume Anonymous 16/11/26(Sat)05:48 No. 16389 ID: 9ed66a [Reply]

File 148013573313.jpg - (225.35KB , 1024x1432 , 0.jpg )

Here’s one update to discover on 6 December when latest results from PISA are made public


Anonymous 16/11/26(Sat)05:49 No. 16390 ID: 9ed66a

File 148013577748.jpg - (215.34KB , 1024x1432 , 1.jpg )


Anonymous 16/11/26(Sat)05:50 No. 16391 ID: 9ed66a

File 148013581985.jpg - (182.43KB , 1024x1387 , 2.jpg )


Anonymous 16/11/26(Sat)05:51 No. 16392 ID: 9ed66a

File 148013588421.jpg - (144.25KB , 1024x1387 , 3.jpg )


start learning about computers Bigattao 16/03/10(Thu)06:19 No. 16297 ID: 00af9a [Reply]

File 14575871945.jpg - (186.25KB , 860x450 , Engenharia_de_Computacao-BLOG-860x450_c.jpg )

Hi sci,
I'm a noob about computers and going to do college of Computer Engineering. I don't know even how to start learning. Can somebody give a tip?

6 posts and 1 image omitted. Click Reply to view.
Anonymous 16/09/18(Sun)06:57 No. 16360 ID: 607898

>is sitting in front of an internet connected medium


Anonymous 16/10/11(Tue)13:02 No. 16363 ID: a13399

File 14761837556.gif - (497.75KB , 245x280 , 1387057469418.gif )

I'm so late that OP probably already finished his career and its an engeneer now

Anyway www.cybrary.it helped me a lot but their classes don't go very indepth, they're just drills to the exam, still they introduce you to a lot of things.

Anonymous 16/11/14(Mon)18:22 No. 16382 ID: ad61e8

Learn to code in Python or in Visual Basic it has a nice GUI interface you can get to grips with easily. Additionally, you can easily find a few youtube tutorials. Be open with your lecturer and let them know that you are very willing to learn, this will give them a lot more incentive to help you out. I would also recommend Code Academy, it will put you in the right direction. OP, do you have any idea what other things will be on the syllabus?

Microsoft Edge Anonymous 16/11/08(Tue)04:49 No. 16376 ID: 57a468 [Reply]

File 147857694543.jpg - (35.31KB , 900x450 , Fight-on-Between-Opera-Software-and-Microsoft-Edge.jpg )

Serious opinions about this new browser?

And I want honest opinions and not those entirely based upon the fact that a past iteration of the engine was not good. Like all things, they can improve or get worse.

warbeast Anonymous 16/11/12(Sat)04:38 No. 16377 ID: 779e7a [Reply]

File 147892188039.jpg - (229.34KB , 900x296 , insect_musicians_tibi-prui_WH_WHITE.jpg )

let's say i have the materials and technology needed to create a biomechanicaL warbeast based on a cicada. i want it to be able to blast out 194 Db waves of pure fuck-you-up. but also be able to use different frequencies and amplitudes of sound for different things too.

so, what's the best way to go about making it?
how would it work?

Anonymous 16/11/15(Tue)00:46 No. 16383 ID: 7f4ba3

who hurt you anon?

SSID ideas BillyJoeThePianoMan!!HjBTVkMQpk 15/09/29(Tue)00:57 No. 16202 ID: 8aea60 [Reply]

File 144348106459.jpg - (68.15KB , 1000x845 , greenlexluthor.jpg )

/sci/ give me some "edgy" SSID ideas, I can have up to four or five on my WRT54Gv5 with DD-WRT. I also figured out I can up the power to about 1.6 watts, but cannot get the -o command to turn on "override" where you can set basically any Tx power. Also I can use channel 12 13 and 14 freely :)

Other than SSID ideas that are "edgy" can you think of any illegal (in the US in general or wherever) SSIDs? Just for lulz.

3 posts omitted. Click Reply to view.
Anonymous 16/03/20(Sun)06:55 No. 16302 ID: 4439d2

Define "Edgy".

>"KiddyFucker" could be considered edgy, but might get you a visit from authorities, and your equipment seized.

You have up to 32 characters, and might be able to use escaped characters or encoded characters depending on operating system/firmware.

Anonymous 16/03/22(Tue)05:22 No. 16305 ID: a76768


Anonymous 16/11/03(Thu)04:06 No. 16375 ID: c58625

File 14781423857.gif - (1.69MB , 222x200 , 1421081368362.gif )

the social security numbers of your enemies.

Storage madness Anonymous 16/08/31(Wed)10:13 No. 16356 ID: f62a88 [Reply]

File 147263121576.png - (909.75KB , 1494x729 , ss+(2016-08-31+at+04_16_07).png )

Basically, my file/folder organization is pretty non-existent. EG: pictures folder has like 5 subfolders that make no fucking sense.

TL:DR how do you sort out your shit?
and are many fucks given about filenames

2 posts omitted. Click Reply to view.
Anonymous 16/10/29(Sat)01:54 No. 16371 ID: 441ee8

File 147769889672.png - (342.97KB , 3736x1400 , Captura de Ecrã (38).png )

i myself do tree organization, it's the basic, create a core folder whre you put everything, then you make some pretty generalized folders, i have 3, a trash folder where i put my zip files and backup, a music folder, and other stuff folder, inside the other stuff i have more organized foders, still generalized, i have a series folders where i put my series, a games folder, a archive folder where i put basically 60% of useable stuff like photos, videos, books, porn and more.

That's my whole organization. (Pic related)

Anonymous 16/10/31(Mon)19:07 No. 16373 ID: d832cf

Use hydrus (8ch.net/hydrus)! Basically it is what this guy >>16358 wants.

Anonymous 16/10/31(Mon)21:41 No. 16374 ID: 8b2816

Interesting! I don't like so much that it's written in Python, but it might be worthwhile to check it out.
Thanks very much.

/sci/ git god with God of monotheism . Anonymous 16/10/13(Thu)00:38 No. 16364 ID: d402e8 [Reply]

File 147631190447.png - (104.96KB , 668x1005 , Screen Shot 2016-10-12 at 4_46_46 PM.png )

/sci/ , we broke Wolfram not you until now : congratulations .

Get excited .

Be good .

God of monotheism guide you always .

1 post omitted. Click Reply to view.
Anonymous 16/10/22(Sat)10:26 No. 16368 ID: 5a53ee

Yeah, the God of God.

Its a riddle wrapped in an enigma wrapped in a vest.

Anonymous 16/10/28(Fri)19:49 No. 16369 ID: 3c4740

Not really, since if there was a god of monotheism then that would imply that:
a) It exists (which I guess is a good start), and
b) Monotheism is actually a thing.

This means that he's the only god, and he's assigned himself that role in particular just to spell it out to everyone.

Anonymous 16/10/28(Fri)21:39 No. 16370 ID: 8b2816

>b) Monotheism is actually a thing.

Can there not be a patron god of something that doesn't exist? E.g. The god of four-sided triangles, or the god of rational square roots of two.

Delete post []
Report post