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/sci/ Science & Math

Threads added between 2013/02/27 and 2013/03/06

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Most viewed threads in this category

8 more posts in this thread. [Missing image file: map00190.png]
Hey, /sci/. I've got a Bio 101 short essay question that is killing me and taking up time that I could be using more productively for other schoolwork. If you guys could help me out with this within the next 3-4 hours, I would be extremely grateful. Hell, I wouldn't mind giving $5-13 via PayPal to whoever could first take the time to arrange a good answer (close to 100 words). Here it is: Explain how oxidative phosphorylation is an example of how new properties emerge at each level of the biological hierarchy.
13 more posts in this thread. [Missing image file: Fphoto-44349803D-2RM[1].jpg]
dear /sci/ why the FUCK is my 10 molarity HCl turning fucking yellow? it's clear then i pour it into glassware and it turns yellow. my equipment is fucking clean. what the fuck is going on? is the HCl being oxidized producing chlorine? pic semi related. not that yellow, but fairly yellow.
6 more posts in this thread. [Missing image file: Type3.gif]
Chemistry question: Is it dangerous to grind ammonium nitrate into a powder? My understanding is that it becomes explosive when mixed with Al powder, so it probably wouldn't be with anything aluminium
92 more posts in this thread. [Missing image file: Millenium-bare-590x442.jpg]
Does the universe have a tick rate? or something such that an event happens and is sort of processed for that particular interval in time, before it is expressed in reality?
30 more posts in this thread. [Missing image file: 1336092948115.jpg]
What's the best programming language to learn in general?
0 more posts in this thread. [Missing image file: 3or52o.jpg]
Dear Nigs: Explain to me with visual representations why we have to change our limits when we use u substitution.
46 more posts in this thread. [Missing image file: 65521_557409984292137_399911514_n.jpg]
POP QUIZ TIME! Answer a question. If you get it right, then you post one of you own. 1) if two sides of a triangle measure 8 and 12, the third side cannot be a-16 b-12 c-8 d-4
3 more posts in this thread. [Missing image file: Untitled.png]
Sup, /sci/. Beginner java programmer here. What are some basic useful programs that I could work on to practice?
16 more posts in this thread. [Missing image file: COLOR THEORY.jpg]
Why have horseshoe crabs never evolved? And don't say that they don't need to because things will always evolve as long as there are mutations.
14 more posts in this thread. [Missing image file: e8closeup[1].jpg]
Sup. Could you guys compile me a quick list--maybe like 5 or more--of what you think to be the most prestigious (non-USA) universities for research in theoretical physics? Oxford and Cambridge go without saying. I need to start thinking about applying to places.

Nonsensical Maths

3 more posts in this thread. [Missing image file: 4441607+_fda89f9d8b2069f3fa7ae3f53a(...).gif]
Heres a math question I cannot for the life of me get, no matter how I look at it. Help? If a/b = c/10, then a+b/? = ?/10

black holes

7 more posts in this thread. [Missing image file: url.jpg]
Hey /sci/, i was wondering if u could tell me if in theory i was to stand in the middle of a black hole and hold a flash light, would i see the light? me and my friend were talking about this and i came up with that if i point it at me i would see it but not if i pointed it out and i would see the light of everything outside the black hole
14 more posts in this thread. [Missing image file: Lighthouse.jpg]
Hi everyone. I'm 18 years old, and I started getting episodes of insomnia in early January (I was 17 at the time, my birthday is in February) and in February it developed into something more persistent. I tried diphenhydramine as well as melatonin and nothing seems to be helping me. I feel deprived of motivation, no libido, and dumber than ever before. It is now March, and although the insomnia has been somewhat alleviated, I still don't get enough sleep during the night. I have accumulated an overwhelming amount of sleep debt and I feel absolutely dead mentally. To worsen my situation I have school to tend to as well, (and they are AP classes). I want to return to my original mental state very much. I wanted to know whether insomnia causes permanent/irreversible brain damage (especially at my age since I'm only 18 and my brain is still evolving). I sleep better now, but I still feel tremendously burdened mentally by brain fog due to my sleep debt. Please reply asap. Your feedback will be immensely appreciated.

Life

6 more posts in this thread. [Missing image file: 83056702.gif]
'Evnening /sci/ Is particles enough in order to create life?
9 more posts in this thread. [Missing image file: protein.png]
Is there a program to simulate whole protein reaction with an organic chemical compound ( ligand) and how is changes it conformation?
11 more posts in this thread. [Missing image file: 3426234.jpg]
May be a noob question but here goes, Isn't a gene just three nucleotides, what is the significance of three? Why do we classify them separately? The most logical thing I could come up with is let's say there are 5 DNA sequences differing in everything but a 3 consecutive nucleotides and still functional. Something like this could implicate that those 3 are the source of the function...?
4 more posts in this thread. [Missing image file: 1324186678112.jpg]
>2013 >using Mathematica >not using open source software like Sage >treating Stephen Wolfram like a god ISHYGDDT

Laplace!

2 more posts in this thread. [Missing image file: Penguins.jpg]
I'm stuck on a Basic Inverse Laplace Second shift theorem example. Can anyone help? (e^(-s/5))/((s^2)+4') Mega props to anyone who can help! (and show some work, not just w/a it ;) )
3 more posts in this thread. [Missing image file: awdc22.png]
Hey /sci/ i have a question about studying math. Right now i am studying cs and chose math as minor (minor subject, minor field of study, secondary subject (non English foreigner)). I had 3 math courses in cs: discrete math, analysis and linear algebra which were more practical than proving stuff. this semester i started to take "real" math courses and its good so far (i understand the subject matter and the exercises are ok). my problem is the proving of assertion. i understand the problem set, know why its correct or wrong but i have huge problems proving it... do you think this will get better over time and i just need to practice? whats your suggestions to improve my skills?
0 more posts in this thread. [Missing image file: superfluid.gif]
Is superfluid helium flow truly dissipation free? As in could I get superfluid helium flowing fast in a circular section of pipe, let it sit for awhile, then quickly open up the pipe and have the superfluid helium shoot out? Or would quantum vortex formation prevent this scenario?






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