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/sci/ Science & Math

Threads added between 2013/01/16 and 2013/01/23

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Most viewed threads in this category

14 more posts in this thread. [Missing image file: hornet.jpg]
I think I have less muscle control on one side of my face I can curl my lip in one direction on one side and not the other it's a tiny difference, but it's noticeable to me I don't want to be a hypochondriac about it, but I can't think of any reason for it other than a brain problem the rest of the internet wants to tell me I had a stroke, but I'm 19 and healthy
6 more posts in this thread. [Missing image file: ft_symmetry1.png]
Question: "Prove that the difference between two odd functions is even" http://books.google.com.au/books?id=o2E5HBgXFZwC&pg=SA1-PA38&lpg=SA1-PA38&dq=the+difference+between+two+odd+functions+is+even&source=bl&ots=sRdUST8PAi&sig=8ov8HV36Z5aBsZvPOLs4MyhNwAA&hl=en&sa=X&ei=4eD_UJj6OKWjiAffi4H4Aw&ved=0CHgQ6AEwCQ#v=onepage&q=the%20difference%20between%20two%20odd%20functions%20is%20even&f=false what
31 more posts in this thread. [Missing image file: 1356863656330.png]
What kind of laptop should a engineering/physics/astronomy student use for school? Thinkpad? Mac? specifics? budget is <$1000 I asked /g/ but they masturbate over 10 year old thinkpads a bit too much
6 more posts in this thread. [Missing image file: aw.jpg]
Can someone help me through this please step by step? An elastic bone is compressed 10 ?m by a student’s weight. The student picks up a very heavy backpack and the same bone compresses by an extra 5 ?m. (a) How many times heavier or lighter is the student than her backpack? (b) How much more potential energy is stored in the compressed bone with the backpack on than without
9 more posts in this thread. [Missing image file: Acacia_confusa[2].jpg]
sup /sci/ I don't know what the fuck I did wrong. I preformed an A/B following Loki's tek on some acacia confusa (root bark) and all was going preeetttyy well until the end. I have my naphtha in the freezer at the moment to try my hand at one more freeze precip, but the first time I removed the casserole dish, I let it sit for too long and the nice pretty white crystals started to dissolve back into the naphtha. So I thought, "okay, my bad, should of removed the solvent faster." I recrystallize the alkaloid on low heat for a few and then stick it back in the freezer. Again, a nice field of white crystals was observed, though upon pouring the solvent off and scraping, the pretty white crystals would quickly "melt" into a tanish goo. To my understanding, naphtha is still trapped, bethat it be by plant oils or just solvate interactions. I have recrystallized and tried to freeze precipitate again, then evaporate the little remaining but with no avail. So my question, I guess, is besides reduced pressure (working on getting a pump but do not own one at the moment), how can I obtain my precious alkaloid? Naphtha will not evaporate, unless I should leave it longer.
11 more posts in this thread. [Missing image file: Shell_WTF_Serious.jpg]
7 more posts in this thread. [Missing image file: DNA.jpg]
Hi guys Whats the difference between a duplication and an insertion?


1 more posts in this thread. [Missing image file: 1338608057053.jpg]
Compare the metabolic oxidation of proteins to the metabolic oxidation of carbohydrates in terms of efficiency and specificity.
58 more posts in this thread. [Missing image file: 1838_cell_theory_4_cropped-large.jpg]
If cell theory states all cells come from pre-existing cells, then where did the first cell come from? I find it almost impossible that organic molecules intelligently organized themselves into single celled organisms.
90 more posts in this thread. [Missing image file: spring.jpg]
ITT: mindblowing facts. A compressed spring weighs more than a relaxed one
41 more posts in this thread. [Missing image file: Hawking.jpg]
In this thread, we post famous science quotes. I'll start: "There is another world somewere, but were? Who know's, we havent finded it yet." -Stephen Hawking
37 more posts in this thread. [Missing image file: 1358814277102.png]
Neither /g/ nor /pol/ can come to an agreement
3 more posts in this thread. [Missing image file: time_travel.jpg]

CP Violation

21 more posts in this thread. [Missing image file: LHC.jpg]
How does CP Violation violate the arrow of time or Entropy? Pic sort of related.
1 more posts in this thread. [Missing image file: OF6MR.jpg]
What would the psychological effects of prolonged space travel be?
8 more posts in this thread. [Missing image file: 1340181133248.jpg]
>mfw I want to become an astronaut >mfw I remember affirmative action in the united fails of A >mfw everyone says not possibru >mfw I'm black >mfw my chances are so much higher than equally qualified whities I'm g-gonna make it bros! Space here I come!

Econ Reading list

12 more posts in this thread. [Missing image file: th.jpg]
Let's build up a good list of required reading for the subject of economics. I'll begin, feel free to add to the list. 1. Wealth of Nations, Adam Smith 2. General Theory of Employment, Interest, and Money 3. Principles of Political Economy and Taxation, Ricardo 4. The Road to Serfdom 5. Das Kapital 6. Freakonomics
5 more posts in this thread. [Missing image file: Jellyfish.jpg]
What is the point of linear algebra? Just taking it in uni and so far it feels like everything they teach is just another way to do things that I already can do. I have never felt like "I wish I could solve this system of linear equations another way" I have never had a problem, but now I am being forced to learn how to do something I already feel pretty good at doing. Does it get better or is it just, "Elaboration of the Obivious 20F"?
6 more posts in this thread. [Missing image file: log_scale.png]
5 more posts in this thread. [Missing image file: Onions.gif]
Psychiatry is pseudoscience. Discuss.

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