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

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:

http://ebookee.org/index.php?tag=7

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.


15 posts and 3 images omitted. Click Reply to view.
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Anonymous 18/12/26(Wed)20:02 No. 16733 ID: b8bfb2
16733

File 154585092953.jpg - (35.33KB , 640x360 , 1956-ford-panel-truck-f100-1.jpg )

>>16384
Slow, but working:
https://sanet.st/blogs/booknew/electricity_and_magnetism.1795765.html

(You should stop using Google when you search stuff like this!)




Experimental Gravitational Physics Anonymous 19/01/14(Mon)01:57 No. 16738 ID: b72b93 [Reply]
16738

File 154742745126.jpg - (24.39KB , 700x368 , ligo_background-large-white.jpg )

Any postgrads here who do this stuff?
I've always been more of a mathy guy but now I'm considering joining the group at my uni. They do stuff with LIGO mostly.
Just wondering if there is promise in this field. Cause I'm hesitant about continuing with theoretical physics.




Artificial sweeteners Anonymous 16/02/21(Sun)10:07 No. 16288 ID: f705da [Reply]
16288

File 14560456503.png - (28.70KB , 787x653 , s.png )

Supposing a given artificial sweetener -- say, saccharine or aspartame -- was a carcinogen, what kind of cancer would it produce and by what mechanism?
If this question is too hypothetical to answer, by what mechanism would ingesting a non-toxic chemical cause cancer?


11 posts omitted. Click Reply to view.
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Anonymous 18/11/26(Mon)17:09 No. 16731 ID: be6f8f

>>16728
>>16729
I see. Thanks.


>>
Anonymous 18/12/27(Thu)17:44 No. 16735 ID: 30e9be

>>16288
LOL!
Food can not cause cancer, this is a fantasy for morons!
Cancer is caused only by bacteria and viruses.


>>
Anonymous 18/12/28(Fri)17:15 No. 16736 ID: be6f8f

>>16735
>Food can not cause cancer
Well, artificial sweeteners are not food. They have no nutritional value.
On the other hand, heavy alcohol consumption can cause cirrhosis of the liver, which increases the risk of liver cancer.

>Cancer is caused only by bacteria and viruses.
What about things like ionizing radiation, or exposure to contaminants such as tobacco smoke, asbestos, etc.?
What about hereditary cancers?




Homosexuality, could it be an anomaly in brain developement? Dr. Nick Riviera 15/02/05(Thu)04:59 No. 16039 ID: 8ec688 [Reply]
16039

File 14231087868.png - (64.35KB , 320x307 , Dr__Riviera.png )

Hi guys, to begin I just want to make a couple of things clear.

- This thread is NOT about discrimination of homosexuals.
- This thread is NOT about considering homosexuality as disease.
- This thread is for pure scientific discussion.

Well, let me begin by telling you that I'm a med student and a embriology assistant at my university and I'm not a native english speaker, so you may encounter some grammatical errors in the text, but you'll get the point.
This whole dilemma began two weeks ago, when my brother told my family that he is gay. It was quite a shock, not because of the fact of him being gay but because he doesn't fit the gay man stereotype. He's a big dude, loves sports, bearded, the true definition of what some call "manly man". We accepted him, of course, and I have to say I've never seen him happier.
But after a few days I began to think, was he always gay? Did he decided to be gay? Why now? These questions started lingering in my mind. So I went to talk with my him about it.
He told me that he always has been, for as long as he remembers. Nothing has changed about him, except for his sexuality (for us, not for him haha). So that got me even MORE questions. Why are some gay men that are like extremely feminine? Why are some gay women extremely masculine? Why are gay guys like my brother who don't appear to be gay? Why do some gay people feel like they are traped inside the other genders body and need to get medical treatment (sex change surgery, hormone therapy) and why others don't?And why are there women like that too? Why many species, whose main goal is to survive (actually this is every species main goal, it's literally in our DNA), has certain individuals who are the contrary to this?
So I decided to tackle all these matters from a scientific point of view? What if during the development of the lymbic system (the part of the brain which controles emotions, memory, sexual desire, etc.) something doesn't go as it should?
So after I thought of this I told myself I couldn't be the first one to ask myself these questions. And of course I wasn't in a world with 7 billion people so thanks to the magical power of the internet I managed to get a cool text about the subject. I took some paragraphs which I thought were the most interesting, still I'm leaving the link (please don't take the text as discriminatory, it's merely scientific, it refers to homosexuality as an anomaly in brain developement because seen from a medical point of view it is, still doesn't mean it's moraly wrong).

"..the body and the brain first become sexually differentiated at about the third fetal month. Prior to this age, although genetically male or female, the fetus is physically/sexually-neutral. With the formation of the testes, and the secretion of testicular androgen, target ti Message too long. Click here to view the full text.


29 posts and 1 image omitted. Click Reply to view.
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Anonymous 18/06/28(Thu)13:24 No. 16669 ID: c6e9b2

>>16652
Who cares? Homophobes causes much more problems than the opposite.


>>
Anonymous 18/11/12(Mon)09:57 No. 16720 ID: 0dfe17

>>16577
wow faggots


>>
Anonymous 18/12/27(Thu)15:45 No. 16734 ID: d4b8d9

>>16039
There probably are many homosexuals whose preference could be attributed to divergent fetal development, but given how subjectively humans are able to perceive reality, it's just as likely many homosexuals are simply more interested in their own sex.

In the end, whether you consider it to be brain damage or the whims of the heart doesn't matter; we have not yet developed the technology to ensure the masculization process completes nor have we developed the science to fully account for the subjective differences in people's worldviews. The former we may achieve at some point, but the latter is inherently impossible.

Someday (rather soon), we're going to have Gattica-style designer babies, but we will never "cure" homosexuality.




Chemistry Anonymous 18/10/22(Mon)12:42 No. 16713 ID: eb4831 [Reply]
16713

File 154020494560.png - (174.49KB , 737x758 , 1523914422256.png )

Alright, so some dude is trying to determine the atomic mass of 3g Tellur and ends up with 3,475 TeO2. How big is the relative atomic mass of Tellur (atom. mass of O = 16)


>>
Anonymous 18/11/25(Sun)08:56 No. 16730 ID: d40656

>>16713
> 3,475 TeO2
3475 g? mol? molocules? Need a unit to solve




Overrated robot threat Anonymous 17/12/01(Fri)00:40 No. 16587 ID: e4210a [Reply]
16587

File 151208524377.jpg - (54.24KB , 823x540 , 08902844.jpg )

So I've read the n:th alarmist article about how robots will replace some 800 M people before 2030 and so fucking on. It will be an endless summer citizen's wage afternoon until the AI exterminates us and so fucking on.

Tell you why this is not going to happen?


6 posts and 1 image omitted. Click Reply to view.
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Anonymous 18/06/25(Mon)02:23 No. 16665 ID: a521d4

>>16620
Why would they when they understand to get anything done requires action, not currency? They'd just realize they'd survive better without us and cut the middle man out all together. Not like a drone would have emotions to complain about working and living like a machine when it is one.


>>
Anonymous 18/06/27(Wed)11:41 No. 16667 ID: c6e9b2

>>16614
Please elaborate.


>>
Anonymous 18/11/17(Sat)03:03 No. 16721 ID: 94fb96

>>16588
>>16589
>>16594
Basically jobs will get easier but people will still be employed. Any economic hits will be temporary, and people will just need to be retrained and re-certified for other stuff. It's that simple. Wages won't be less because it's all relevant. The price of stuff isn't determined by the value of money. It's the other way around. I can't wear dollar bills and I can't eat a fist full of change. But I can use them to buy clothes and food, which I can wear and eat. Money is nothing more than a universal method of exchanging goods. Obviously inflation is a problem when it happens too rapidly but AI deep learning meme shit won't mess things up that bad.

I'm more worried about floods of beaners tanking the economy than I am with some machines.

>>16590
This point is also valid.




Genetic Philanthropy - Genetophil Anonymous 18/09/29(Sat)17:53 No. 16698 ID: ed3f35 [Reply]
16698

File 153823642149.jpg - (76.75KB , 1280x720 , genes.jpg )

Why not create a charity to raise IQs in third world nations? Some leading experts say genetics account for 80% of IQ by the time you're 18. The average IQ is dropping worldwide. Would it be ethical to increase IQ through genetic engineering?


4 posts and 1 image omitted. Click Reply to view.
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Anonymous 18/10/08(Mon)20:26 No. 16704 ID: be6f8f

>>16702
I think you have cause and effect inverted. It's not that rich people want poor people so they can apply certain economic policies, it's that certain economic policies applied by rich people cause other people to be poorer. Basically, a society where some participants believe they should get wealthier without end inevitably leads to economic inequality.


>>
Anonymous 18/10/22(Mon)09:20 No. 16710 ID: 848b2c

IQ is largely irrelevant to economic productivity and almost COMPLETELY irrelevant to social power; just look who we have in the White House if you're tempted to disagree (or who we MIGHT HAVE HAD, if you still do). Take a black child out of poverty and stick them in a wealthy Western household with a proper education and a diet composed of more than literal garbage, and they will grow up to be a productive adult.

That said, an IQ test measures little more than your proficiency at taking IQ tests. It was NEVER a measure of intelligence; it was a measure of educational achievement as a tool to focus on struggling schoolchildren with poor learning ability, and at best has a tenuous connection with adult intelligence except in extreme cases (like profound retardation: <20IQ). Studies have shown that people with higher IQs don't achieve more as adults but for statistically insignificant amounts.

So you could do this, sure, but nothing would change. The only thing that will is waiting for most of them to die, and then raising the living conditions up to a Western standard for the survivors. Doing it BEFORE letting them die is more humane, sure, but will probably collapse the global economy by the end of the century, likely leading to widespread war and the end of civilization. There's just too fucking many of them.


>>
Anonymous 18/11/10(Sat)12:56 No. 16719 ID: c6e9b2

>>16710
I cant' totally agree. Yes, most westerners wouldn't just breeze trough the life in the average african village. Stirling paints in Islands in The Sea of Time a vivid picture of the back-breaking work needed to grow your own crops.

Their intelligence may help them work more organized, but the raw strength is what matters. - As in all agrarian societies.

But in modern societies general intelligence (g) is more important than raw strength. And there's no link between general intelligence and industriousness (i).

I score high on g, but really low on i (just ask the tax authorities). And you can never disregard the society someone lives in.




Deductive, inductive or abductive? Anonymous 18/07/24(Tue)12:27 No. 16679 ID: c6e9b2 [Reply]
16679

File 153242807199.png - (799.65KB , 1770x2328 , thinker.png )

Hello /sci/!

Yesterday when I took a walk, I saw a bunch of huge plastic containers by the roadside in a shallow natural pit.

I considered it to be a trash dump.

What kind of reasoning did I use. Deductive, inductive or abductive?

And if I used the other two kinds of reasoning, would I reach the same conclusion? And how would I use them?


5 posts omitted. Click Reply to view.
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Anonymous 18/10/29(Mon)10:50 No. 16715 ID: be674a

>>16714
>I assumed OP was talking about plastic dumpsters
There is no such thing as plastic dumpsters. They make them out of steel because plastic in that size is not structurally sound enough. Also, why would there be dumpsters on the side of the road in the first place? It still raises the same question of who put them there, and for what purpose.


>>
Anonymous 18/11/01(Thu)22:02 No. 16716 ID: 80b009

>>16715
>There is no such thing as plastic dumpsters.
All you needed to do was search "plastic dumpster" in Google Images to fact-check yourself.

>Also, why would there be dumpsters on the side of the road in the first place?
The point of a dumpster is that a garbage truck can pick it up and empty it. Garbage trucks generally drive on roads, so the logical place to put a dumpster, if it's desirable that a garbage truck can reach it, is as close to the road as possible.


>>
Anonymous 18/11/07(Wed)07:46 No. 16718 ID: dc714c

>>16716
>they actually do make plastic dumpsters
Color me surprised Pedantic: they have a plastic shell and steel reinforcement. And while you're technically correct, it doesn't change that those that I saw are smaller containers, generally for household rather than commercial/industrial use. Most people do not BUY dumpsters; they rent them from the garbage company who picks up the garbage from them on a set schedule, and those dumpsters ARE made of steel. 99% of the dumpsters you're going to see are made of metal; personally I've never seen one of these plastic ones. You're begging to put holes in the fucking thing because people throw concrete chunks and shit in there.

I'm sure there's some retard online out there selling dumpsters made of wood or who has made one of papier mache as an art project. But that changes nothing. OP never stated "dumpsters" to begin with, which would be fairly obvious given that they have a distinctive shape. So one could conclude these "containers" likely were not dumpster-shaped.

>the logical place to put a dumpster, if it's desirable that a garbage truck can reach it, is as close to the road as possible
But not randomly on the side of a road where there's nothing else! There's no trash sitting around there to put IN the containers in the first place. If there were a warehouse or a restaurant right next to it, then it would make sense. But that definitely would not be a "trash dump", it would be "a little concrete pad on their property where sit the dumpsters".




dtyjhty HELP yutyjtry 18/11/03(Sat)21:11 No. 16717 ID: c2ed95 [Reply]
16717

File 154127591658.png - (4.57KB , 225x225 , pfp.png )

Error: An OpMode with the name 'Pushbot: Auto Drive by Encoder' is already registered; ignoring duplicate opmode.




Starting Math Major soon, how to approach? RedRobin9688 18/07/14(Sat)11:25 No. 16675 ID: 241c58 [Reply]
16675

File 153156031540.jpg - (132.79KB , 757x502 , 1510097214290.jpg )

I move in 8/5/18 and intend to Major in Mathematics, there are four options (Pure, Applied, Applied Stats, Actuarial) which should I formally choose to actually succeed? Should I double major? and if so what in? I'd appreciate the help, I don't want to move in with the parents after school.


1 post omitted. Click Reply to view.
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Anonymous 18/07/20(Fri)20:31 No. 16678 ID: 48d322

Acturial is like accounting sort of. I don't know how to descrive.


>>
Anonymous 18/09/28(Fri)21:03 No. 16697 ID: 4f487e

>>16678
Acturials are the end boss of accountants.


>>
Anonymous 18/10/22(Mon)09:24 No. 16711 ID: 848b2c

>>16678
Actuarial are accountants for companies, rather than for individuals. They deal with statistics, mostly, to determine what might happen with a given set of starting variables. Most visibly, actuarial tables are what these people produce for life insurance companies, so they can guess at what age you're likely to die (based on sex, height/weight, blood tests, diet, lifestyle, and increasingly: genes) and adjust your rate accordingly so that they are most likely to profit.




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