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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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anon 14/11/08(Sat)17:55 No. 15966 ID: 64d39c


Biology and Diseases of the Ferret, 3rd or 4th Edition

Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery

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

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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.

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Anonymous 15/05/21(Thu)17:35 No. 16112 ID: 77222f

being gay is not a disability
...and you are being incredibly rude

Anonymous 15/05/21(Thu)17:53 No. 16113 ID: adac7c

>DNA doesn't lie.
>Gay is not normal
Both of these statements are true but neither is tied to the other.

Every mammal on this planet has shown to be omnisexual at some point in time. Inter-gender, inter-species and even delving into the far fetishes such as necrophilic practices have been demonstrated by every species observed. You say gay is not normal, I agree, neither is being straight.

Everything 'wolfs everything given the chance and denying this instinct denies your own normalcy.

Anonymous 15/05/21(Thu)22:06 No. 16114 ID: 77222f

disregarding all the social implications and connotations behind the word "normal", being gay isn't "normal" as it relates to a minority population.
Same with being blond-haired, or left-handed.

Of course, when used in non-scientific language (such as drawing a parallel with Down "Sindrome"), it is easily read with all the negative connotations included.

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 13/08/24(Sat)14:13 No. 15266 ID: 54cc34

I finally have it! theorydesignsjonl.blogspot.com the latest post, I finally figured it out!

Anonymous 15/05/12(Tue)02:56 No. 16107 ID: b9e6ac

Fuel. lol.
Hydrogen maybe, maybe assisted by conventional fuel

sage Anonymous 15/05/12(Tue)03:04 No. 16108 ID: b9e6ac

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Engineering a propective engineering student 14/05/02(Fri)14:27 No. 15644 ID: e50735 [Reply]

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What do you think is
1) the best major in engineering
2) the best sector in engineering
3) the best position in engineering
-starting salary
-mid career salary
-job satisfaction
-future developments

For example: I am thinking about studying petroleum & resource engineering (but I might have the option to study medicine).
It's well known petroleum engineering has high starting and mid-career salaries. Like many other engineering degrees, many students fail. There is job security, but it is very much dependent on the prices of resources and there are some concerns about the demand and supply of resources such as gas and oil in the future. For the most profitable jobs in the sector you have to work hard and make long days, often far away from home. Working for the bigger oil and mining companies, benefits can be exceptionally good. However, placement for these positions can be very competitive.
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Anonymous 14/05/06(Tue)10:13 No. 15647 ID: aaad3e


Well it's not like there's any incentive for great scientists to spend their time here. There's science forums for serious discussions, and sites like this: http://hypothesisdatabase.capitalistscience.com/ for participatory scientists.


I avoid replying to threads - in case someone actually follows my advice. I think my code might have changed or whatever too. I guess I'll find out after posting.

I barely post threads anymore either.

That being said, I will answer this thread.

For future reference, anyone reading this would probably expect you to do the research yourself.

If best = optimizing for the things you want to consider in the order that they are posted, well...actually let's just optimise for starting salary since I never learned how to do multi-criteria decision making.
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Anonymous 14/05/06(Tue)21:42 No. 15649 ID: b957e5

>I avoid replying to threads - in case someone actually follows my advice. I think my code might have changed or whatever too. I guess I'll find out after posting.

I missed the persona of mystery cb9fa8 imbued, yeah, we ripped you/it a little but it was a good laugh at times. It's always good to know you're still here though and don't worry about people listening to your replies, if you tell them to stick their hand in the proverbial fire and they do it... well it's their own stupid fault.

Anonymous 15/05/12(Tue)00:54 No. 16105 ID: b9e6ac

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For me, I think biophysics

Anonymous 14/09/18(Thu)21:20 No. 15877 ID: 6cf8dc [Reply]

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I got drunk last night and got to thinking... what is stopping lightning from striking houses and tv antennas outside and shit when houses today aren't made with lightning rods?

1 post omitted. Click Reply to view.
Nattajerk 14/10/01(Wed)23:36 No. 15904 ID: ee6591

this ancient device you know as a tv antenna is connected to ground, and provides a clear path for electricity to follow. radio towers are frequently struck for example, the idea is not to avoid lightning but to divert it.

so, in essense, nothing is stopping lightning from striking your house. it is rare, of course. trees, taller buildings, etc will take the most risk of being struck, but having your property struck is certifiably rare by comparison.

Anonymous 15/05/08(Fri)03:13 No. 16099 ID: ef611a

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> ''I got drunk last night and got to thinking...''
..because anon "gets to thinking" after alcohol is applied.

Also, lightning is an electro-magnetic current which leaves the surface of the Earth enroute to discharge in the Ionosphere; where the Extraterrestrial Species (we can lightning) breeds, votes, pays taxes, and smells like music.

Anonymous 15/05/08(Fri)03:47 No. 16102 ID: aef4a9

>lightning is an electro-magnetic current which leaves the surface of the Earth enroute to discharge in the Ionosphere; where the Extraterrestrial Species (we can lightning) breeds, votes, pays taxes, and smells like music.

And in that crazy lies a hint of truth:
Lightning does occur because electrons are being pulled into the sky. Electrons accrue during the collisions between water droplets and ice crystals in the sky and these displaced electrons leave behind a field of negative charge in the atmosphere. Once the charge reaches significant levels lighting occurs. What's actually happening is the electrons are being forcibly removed from particles creating plasma ions in the process. These ions are then drawn upwards to neutralise the charge.

Think of it like sticking a vacuum cleaner hose on the sand, the sand is the charge being drawn up and the hose is the bolt we see descending into it.

trying to understand the weather Anonymous 13/06/27(Thu)13:36 No. 15166 ID: cb9fa8 [Reply]

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why are some cold and warm front bumps shown to be on one side on the same string and then on the other side on the second half of the string?

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CandleJack 13/07/04(Thu)02:09 No. 15178 ID: 2f260d

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It looks like it's going anti-clockwise to me.

Anonymous 13/08/22(Thu)02:50 No. 15264 ID: 5f92fc

That's because you're looking at it the wrong way. When you see a cyclone from the top, you are seeing where it is releasing the air that it sucks up. Thus, the direction of reference is traveling outward from the center along the spiral, not inward.

Anonymous 15/05/08(Fri)03:42 No. 16101 ID: ef611a

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your question was answered on the KING-5 TV weather blog.
See the definition of electro magnetic waves on the page: "slow moving weather patterns".

Iphone 4 WiFi Anonymous 13/08/15(Thu)13:01 No. 15254 ID: 891cdd [Reply]

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Now I'm not going to go into much detail but my IPhone was in a microwave for 4 seconds. Everything Works except for GPS and Bluetooth
I dont care much for GPS and Bluetooth, I only really need WiFi.
The problem is I have to be holding my phone right next to my/a router for it to pick up anything.
I have opened up my iphone and checked the EMI sheild. All the screws are tight and there is a solid connection to the logic board.
If I replace the EMI shield would my WiFi be restored? Or am I stuck like this forever?
Any help is greatly appreciated. Thankyou
IPhone 4 (GSM Model:A1332) 6.0.1 Jailbroken

3 posts omitted. Click Reply to view.
Anonymous 13/08/20(Tue)21:06 No. 15262 ID: 2781f1

Fell for the IPhone charges in 1 minute in the microwave, huh? Lmao

deadbabies!rfBia8M6N2 13/08/30(Fri)15:58 No. 15290 ID: 57e7cc


Couldn't you unjailbreak your phone and bring it back to apple and have them repair it? I thought they had a warranty period where they would repair stuff like that for free. If nothing appears to have been damaged by you, I don't see why they wouldn't replace it.

I wouldn't bother replacing the EMI shield if it's whole and undamaged. What more likely happened is what was said
here. Basically, something arced to a component and fried it, and you are lucky to have it work at all. Does the mobile/cellular network still connect?

To me, it sounds like the antenna or the antenna's connection to the phone is fried. You could try replacing it, but there's no guarantee it will work.

Try pressing the area where your antenna is down into the phone with the back cover open, then attempt to connect from further away. If this works, it's most likely a problem with the antenna's connection.

In truth, I have no idea about iPhones, but that's what I would try if I had this problem with my phone.

It's too bad there's not a USB port on the iPhone to allow you to add an additional WiFi device. Too bad Apple hates USB.
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Anonymous 15/05/08(Fri)03:31 No. 16100 ID: ef611a

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I don't think this is true, but...
My neighbor's cousin's school-teacher's dentist's pool-boy's garbage-man's mom said that: "When an iPhone (or iWatch) is put in a Metal-bag of water and nuked in the microwave for 2.3 minutes, it will come out glowing in the dark for 3.2 days and smells like how cookies smell on the skylab that orbits around Mars." But I don't trust denists, so...

Anonymous 15/02/06(Fri)21:17 No. 16041 ID: 6a51a1 [Reply]

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We mow our lawns to make them look like they're being grazed on.

In caveman times, long wild grass in a territory would have been a sign that it isn't occupied by grazing animals.

We've evolved to find short, neat grass the most attractive as it signals the presence of herds of grazing animals we can hunt.

What do you think?

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Anonymous 15/03/12(Thu)16:37 No. 16074 ID: b2c2db


actually I've seen plenty of bugs in short grass

sage 15/05/04(Mon)14:39 No. 16096 ID: cd291a

actually pokemon live in tall grass if you grew up with a gameboy you would know this

Anonymous 15/05/05(Tue)04:49 No. 16098 ID: af3d3e

We didn't evolve in to this, fellow. It's a matter of taste. We were shown by the media that is preferable to have a neat low lawn so that's why we do it.

Have we or will we evolved to structure our thoughts on what the media puts forth is another thing. I think so, men and women who don't listen to the TV won't have kids and thus people will be predetermined to check out sensationalism that rots you brain.

EXTREME SMOOTH Airbus A380 Landing! Anonymous 14/12/18(Thu)01:06 No. 16002 ID: cd6139 [Reply]

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EXTREME SMOOTH Airbus A380 Landing! I never see something like this. If you have more videos like this please post them.


Anonymous 15/04/08(Wed)05:19 No. 16083 ID: 380e67

The discussion under it is interesting...

Anonymous 15/05/03(Sun)21:45 No. 16095 ID: 34c1c6


it wasn't that smooth. ive done better i MSFS 2009

air core filter symbol nonoubizoniss 15/05/02(Sat)14:40 No. 16094 ID: b4ba8f [Reply]

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I'm redrawing a poorly drawn schematic. most of the components are drawn the way they look and not as the symbol. also I'm not sure of the names. is an air core and a iron core filter a air/iron core inductor? if not what dose the symbol look like? BTW a Google image search was more confusing than helpful.

Anonymous 15/05/14(Thu)09:44 No. 16109 ID: bc1020

"filter" might be a coil with/out the ferrite core

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