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/sci/ board - Science & Math - April 2014

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Most viewed threads in this category

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http://www.spiritscienceandmetaphysics.com/humans-do-not-come-from-earth-sunburns-back-pains-and-labour-pains-prove-it-claims-scientist/ mmmk
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https://www.youtube.com/watch?v=pSbdQncOAq0&index=58&list=PLKaMVzmGcqBIxU1cT3-BnRB8IIjsPtwoS
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https://www.youtube.com/watch?v=0Jog5VZde70&list=PLKaMVzmGcqBJmNWlBMAw9hjsfyL11vwEE&index=2
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Criminal Mastermind

Criminal Mastermind 24 posts and 0 image replies omitted. Click to view.
Tips on becoming a criminal mastermind? -What I should study... -What I should do... -etc.

AP Chemistry

AP Chemistry 0 posts and 0 image replies omitted. Click to view.
http://strawpoll.me/1503581 help a brotha out m8s
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I'm trying to learn code, don't care which one it is. I just want to dive into something and learn anyone have good inf to share e-book, website, etc.
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Hey /sci/, ive been looking for this .pdf and was wondering if any bio students who have this could help me out. bis101 required text T_T damn book publishers taking all my money, I spent $400 last quarter. I'm going to just download it this time. please help if you can :) Genetic Analysis: An Integrated Approach Author: Sanders, Mark F., Bowman, John L. 1 Customer Product Review ISBN-13: 9780321732507 ISBN: 0321732502 Pub Date: 2011 Publisher: Benjamin-Cummings Publishing Company
Can someone please explain... 23 posts and 2 image replies omitted. Click to view.
Can someone please explain hexadecimals to me? Everything I've found so far has just dealt with converting binary to hex, but I'm more interested in reading the hex so I can know it's decimal value.
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Moon eclipse scrubbed due to helium leak on the suns first stage. Next eclipse window is Apr 29, 2014.
Are Gaussian surfaces really... 3 posts and 0 image replies omitted. Click to view.
Are Gaussian surfaces really Gaussian solids, or do I just not understand integration? For example, if you wanted to take the surface integral of a sphere, I understand why theta would go from 0 to 2 * pi and why phi would go from 0 to pi, but wouldn't rho go from, well, rho to rho? If this is the case, the d(rho) part of the integral would be 0, making the whole thing 0, which I guess makes sense because the volume of something infinitesimally thin should be 0, but that kind of makes the concept of Gaussian surfaces useless, right? Or am I completely wrong and it's actually a ball in which rho goes from 0 to rho? Or am I completely wrong in some other way?
hey /sciim not certain if... 3 posts and 0 image replies omitted. Click to view.
hey /sci im not certain if i've done this correct, anyone care to check for me? (x-4)(y-6) = 200 therefore y = 200 / (x+4) + 6 I know its basic shit... so inb4 "you're retarded"
>snowing in the middle of... 5 posts and 0 image replies omitted. Click to view.
>snowing in the middle of april >libtards still trying to argue global warming is a thing all liberals should be banned from science

arcsin

arcsin 1 posts and 0 image replies omitted. Click to view.
Is it possible to take the arcsine of a number greater than 1? I tried it with Octave but I'm not sure how I should interpret the result. Is it a calculation error? Pic related.
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Does anyone else realize how weird drosophila research is? > be little girl > grow up with parents and extended family inside glass cylinder. > Floor is food. Kids eat and shit inside food. > Adults fuck each other all day > One day whole world shakes, and you mysteriously pass out > wake up, all adults are gone > Same thing happens multiple times > You grow up and are an adult > still a virgin because waiting for special sempai > Haven't even had your first shit since becoming an adult > Get knocked out > wake up with a bunch of other virgin females. > feel like you've been touched all over with something wiry. Scratches all over body > Trapped for days. > one day you wake up inside a tiny white room. > rumble as what you thought was a wall lifts up and opens up to a larger chamber > hesitantly step inside > Aggressive noise, and suddenly you're pinned on the ground by large male of a different race > forcibly penetrated > cums buckets > keeps cumming > cums enough to form a giant plug the size of your head out of solidified cum > ahegao.jpg > preggers > fall unconscious Then I come and decapitate the flies, spin them in a centrifuge for the hemolymph, collect the fluids of a couple hundred dead female flies together, and test to see if they released certain hormones during sex.

Asbestos

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Are there any tests I can perform for asbestos myself? I have a slight concern about some damaged material but would rather make some sort of examination myself before raising any issue in case I cause a needless panic among hypochondriacs which will only cause problems. I'm aware I can send stuff away to a company and I would if I wanted certified proof. I have access to a standard stocked laboratory but no fancy gear like a mass spec or electron microscope.
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Hey /sci/, can someone explain how to titrate molecules with multiple pKas to me? Say I have something with pKas of 2.4, 4.2, 6, and 9.7, and I wanted to titrate its fully protonated form to pH 6.8. What would I do? Thanks.

Stopping The Moon's Recession

Stopping The Moon's... 2 posts and 0 image replies omitted. Click to view.
Hi /sci/, I understand the Moon is receding from the Earth at about 2cm / year. When a spacecraft uses a body, such as the moon for a 'gravitational slingshot', I assume the spacecraft gains kinetic energy. Therefore this energy must be conserved, so I assume the moon must slow down. As Kepler's second law dictates, if the moon loses velocity at its apoapsis, its periapsis will fall in altitude above the Earth, and vice versa. Can we therefore stop the moon from drifting away from us by slingshotting masses around it? How much mass would we need to stop the moon's recession?
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Does anyone know what is the minimum amount of radiation required to instantaneously kill an average human being, and with what kind of particles/rays?

Hank Green

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Thoughts on the SciShow host? Thread about both here: >>/tv/43510037
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