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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

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.
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.
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?
14 more posts in this thread. [Missing image file: image.jpg]
This might be fucking dumb, but is there any research/math behind patterns in parking lots? I was thinking that it must be somewhat predictable, right?

FUCK

33 more posts in this thread. [Missing image file: angry.jpg]
>give a qualitative sketch of the solution curves >give a qualitative sketch of the graph of y(t) >sketch the position x(t)
19 more posts in this thread. [Missing image file: binom.png]
i have problems to prove that.. the n = 2^m => \binom{n}{k} was easy. but n over k => n = 2^m is the problem any help?
20 more posts in this thread. [Missing image file: benzen1.gif]
My professor asked "which of the following is incorrect about benzene" well the answer was "The molecule is a 6-membered ring which contains alternating single and double carbon-carbon bonds" I was kind of upset because I thought this was an obvious fact, but is it because the double and single bonds aren't really alternating, which is why they sometimes draw it as just a ring in the center instead of showing the 1,3,5 triene? thanks in advance.
9 more posts in this thread. [Missing image file: 1358536943952.png]
How could someone solve this differential equation? yy'' = y^(2) y' + ( y' )^2 y(0)=1 y'()=1 What technique, setup would you use. This is on our practice exam, but doesn't follow any form his examples or homework is is. The main thing throwing me off is ( y' )^2
19 more posts in this thread. [Missing image file: akira-neo_tokyo.jpg]
Are there any current plans to build a new town or city "from scratch"? Technology and architecture have come a long way, and I'd like to see a modern city built like in my 80s sci-fi cartoons. Something like the post-war British "new towns": http://www.youtube.com/watch?v=6ophEYd4A-Q http://www.eafa.org.uk/catalogue/249
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
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.

Geology Thread

0 more posts in this thread. [Missing image file: geologyrocks.jpg]
Any geologists or geology students here? Geographers and Environmental Scientists welcome.
1 more posts in this thread. [Missing image file: 1345917652510.gif]
Is sociology anti-science?
4 more posts in this thread. [Missing image file: ti-nspire-cx.jpg]
Have any of you guys tried this badboy here? what is your oppinion? Graphing Calculators threa

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






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