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/sci/ Science & Math

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Most viewed threads in this category

2 more posts in this thread. [Missing image file: 1354082802317s.jpg]
Sodium chloride is an ionic compound. How can you account for any observed differences in conductivity between dry and dissolved sodium chloride?


87 more posts in this thread. [Missing image file: 1350239830138.jpg]
Well hello there /sci/... It's been awhile since I've posted, and I finally have some down time, allowing me to post again. Anyways.... Would any of you fine, aspiring scientists need any textbooks for your upcoming semester? If any of you remember my thread earlier this year, you know I'll do my best to deliver your request.

Tough Puzzle

23 more posts in this thread. [Missing image file: b.jpg]
Tough Puzzle: You have 10 coins. Each coin can be one of two weights. You have a balance (you can determine if two sets of coins have equal weights but not the difference in weights). In 3 weighs, determine if all 10 coins are the same weight.
0 more posts in this thread. [Missing image file: 408brooks-brothers-shirt_385x385[1].jpg]
Help me design an experiment, /sci/. A friend bought this expensive shirt that's said to produce negative ions to improve body health. Health effects completely aside since that's a whole different debate, is there any easy way to test whether the shirt actually produces negative ions like it claims? It's not that far-fetched since you can get static generated from certain fabrics and the shirt's texture is pretty unique, but it would be nice to do a concrete test.
0 more posts in this thread. [Missing image file: 29291493.jpg]
4 more posts in this thread. [Missing image file: 1354000168916.jpg]
17 more posts in this thread. [Missing image file: 66015_4326798841417_1603863111_n.jpg]
So, about 3 weeks ago I was in a car wreck. An old man in an SUV hit my girlfriend and I in her tiny Eclipse. In the wreck my girlfriend and the old man basically game out unharmed, but for me I got multiple skull fractures and severe nerve damage on the left side of my face above my eye all the way to the top of my head. I was unconscious for 12-16 hours after the wreck and they were worried I had bad brain damage, but luckily I didn't have any. Anyways, the reason why I post this on /sci/ is because what happened minutes after the wreck.. After we got hit my girlfriend noticed I was not moving. I was in the driver's seat with blood running out of a few gashes out of my head. She called the ambulance and for the next 5 minutes while she waited for them she and all the bystanders thought I was dead. After when the EMTs got there, they tried to extract me from the car, but during the moving process "I" woke up. When they tried to get me out and get me inside the ambulance I fought off the EMTs punching them, headbutting them, even spitting on them. It finally took 6 of them to get me down and onto the stretcher. Keep in mind, I said earlier that I was unconscious for over half a day after the wreck, so I don't recall any of this and it was DEFINITELY atypical behavior for myself. So, during this time when I was going bonkers, what was controlling me? My subconscious? Random neuron impulses? What would make me act like that? Here's a picture of me after my skull surgery as a treat; I never post pictures of myself on 4chan, but I think you'd guys find it interesting.


20 more posts in this thread. [Missing image file: 1355033250769.jpg]
Hey sci, tg here I've been doing macros in maptools that have become increasingly more complex. and I've run into a quandry, the user can select between 5 different options 3 times and the end result is that these choices are tallied by adding to variables and have them multiplied and added to become one number. For example, a person selects option a twice and option b once, the first variable is 2*1, then the next is 1*10, (the rest are 0*x which ends up producing nothing) another possible combination is option e, b and a, which would produce 10011. The purpose of this complicated system is to emulate this kind of letter arrangement system http://www.mccpta.com/resolutions/GradeConfigurationTable.pdf but to also eschew from it functional duplicates. for example, If I simply made them letters and had them added together, I could get a result like AAB and BAA, I'm trying to avoid duplicates like this since they aren't necissary and for a reason below. After these numbers are generated each time, they are fed through an array of cases that call for the particular numbers, then the user recieves some text mostly unique to each possible combination. The problem is this method relies on me by hand counting out all the different numbers and possibilities and I have no way to double check and make sure they're all there. I looking for someone to help me find a way to calculate and display all the possible unique combinations. Alternatively, an easier way to do this.
2 more posts in this thread. [Missing image file: 31H2CHD2B2L._SL500_AA300_.jpg]
hi there guys, i'm not exactly sure i should open that topic here but here i am. i'm looking for a solution manual of fundamentals of vibrations by leonard meirovitch to study for my final exam. can anyone help me to find out that?
28 more posts in this thread. [Missing image file: TentacleTF.jpg]
I have a question. What would a piece of muscles weigh if it was 2,6 meter long, and 35centimeters "around"(girth so to say) ? An answer to this question would be lovely Pic related, its for a character in my book(lame I know) that will have a arm with tentacles
10 more posts in this thread. [Missing image file: 1vYTC.gif]
I'm not really sure if this is the right board for this, but here goes nothing, I guess.. So what I need is, the names of the most uncommon books about psychology. Uncommon in the sense that no one's ever heard of them. And about psychology, in the sense that it would be about understanding people and their minds, etc. I know this is pretty random, but I could really use the help.
2 more posts in this thread. [Missing image file: genetics2.jpg]
how might the average person today participate in a multiple generations eugenics program?

wing it

13 more posts in this thread. [Missing image file: usb_nerdkit_homepage.jpg]
Is it a good idea to wing my final tomorrow for a math class. Was going to try but I am currently off for a semester from my regular school and taking the class at a communtiy college. Then my school said the credit won't transfer, so I kinda lost motivation to do good on the final.

Introduction to Game Theory?

8 more posts in this thread. [Missing image file: praygame.jpg]
/sci/, what's a good resource (article/book/etc.) introducing Game Theory? I don't mind if it's somewhat 'pop', as long as it is engaging and isn't too hand-holdy.
25 more posts in this thread. [Missing image file: Salicylic-acid-from-xtal-2006-3D-balls.png]
Hey /sci/ How do I go about preparing a solution of 2% salicylic acid? It's for cosmetic use, mind you (very good against acne), so please recommend me a method that's not guaranteed to make my skin explode...

Hard SciFi movies

36 more posts in this thread. [Missing image file: 1355677353309.jpg]
Can someone recommend good SciFi movies which try to be realistic? bonus points: - Made in the last 20 years - Features space (spae travel, space exploration, space living) - Features future society - More than one technological advantage is explored - No "Rule of cool" (impractical like robots wielding light sabers, just because robots=cool, swords=cool) - Intelligent protagonist (engineers, scientists = cool. knights, ubersoldiers = stupid) Positive Examples: Sunshine Primer Minority Report (Starship Troopers) Negative Examples: Star Wars
15 more posts in this thread. [Missing image file: bad-hairstyle.jpg]
Why do facial aesthetics matter? Why are people attracted to someone with a "prettier" face than someone with an "ugly" face? If instictivly woman are attracted to someone with an athletic build because it signifies health and reasurance of healthy offspring, what purpose does a "pretty" face have?
26 more posts in this thread. [Missing image file: images-2.jpg]
Anyone heard of non consentual rfid implants? Is that really happening or are these people nuts?
51 more posts in this thread. [Missing image file: chemist.jpg]
Anyone else here hates chemistry?
25 more posts in this thread. [Missing image file: `1.jpg]
Let's say someone has a 4.0 at Texas A&M University in a B.S. biology degree. What kind of schools would that person be able to transfer into? Top 20?

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