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/sci/ board - Science & Math - July 2014

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Most viewed threads in this category

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I really want to work on transhumanism What should I major in college?
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Is light a solid, liquid, or gas?
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Hey /sci/, I haven't taken any general relativity but I have some questions that I could not find clear answers for on the internet. Pls respond. 1. So if light being drawn to black holes because gravity curves space and not due to any pull, would a mass less particle travelling slowly follow the same path as a photon? It seemed like it should to me because it is just going "straight" or whatever. 2. If this curvature is so intense that it causes light to spiral inward (I think), does that mean that nothing can escape? For example, if you had a spacecraft with strong enough thrusters, that did not become deformed due to spaghettification, would you be able to overcome gravity according to (GMm)/(Rr)? If not, why not? To me it seemed like the only reason light cannot is because it follows a set path based on space-time or whatever. Thanks
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I am trying to grow sugar beet on agar under sterile conditions. However, many of the seedlings have these weird brown /black spots. Could it be bacteria or fungi, even though they don't seem to spread on the nutrient containing agar? Any ideas what else it could be?
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If an alien race wanted to halt our technological progress at its current level without affecting our free will or revealing themselves, how would they go about it?
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So I asked this on /r/ already but I'm pretty sure I'm not gonna get answers there, so I'm asking here too, I hope it's fine. I'm looking for an Hartshorne's Algebraic Geometry pdf but I can't find it anywhere, and I'm not sure I want to pay 45€ for it. If you have an ethical problem, just know that I always buy a book when it served me well, I just ordered "A Royal Road to Algebraic Geometry" which I loved.
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Why is he so perfect?
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How would tides work on a planet with rings instead of moons?

Can you see the rock normal?

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Columnar joint of Iceland is something strange. Electrical circuit fossilized or not exposed? Columnar joint is a natural phenomenon really?

HPPD help

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What's up /sci/, I made a thread last night but didn't really grab any attention so I'll give it another shot. I'm 15 years old, and about 2 weeks ago I tried shrooms for the first time. Prior I was a heavy pot smoker. I had a bad trip, and when all was said and done, things were fine for about a week. Just a few days ago however, I was just sitting in my computer chair watching a video about psychedelics and the feeling of coming up on your psychedelic high and I felt really weird. I feel like my perception of reality is slightly, off. Like I am very aware of the fact that I am looking something and I feel almost a very slight high. It feels almost as if things are outside of my head and this has been REALLY terrifying me. I did some research about HPPD and I am just wondering if these effects will go away? I really hope they do, and I'm holding out for the fact that I am young and my brain is still developing so I can get past this. It is causing me panic and anxiety attacks and the only way I seem to get over it is sleep, surrounding myself with people, or occupying myself with some kind of activity but it's always there gnawing at the back of my mind. Can someone please talk to me about this.. am I going to be okay I am seriously so scared.
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Scientifically speaking, how does one become a "supreme gentlemen"? How can one turn into a narcissistic egomaniac like this guy, with complete lack of insight, yet still retain most if not all of their intellectual faculties? What is going on in the brain?
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What's a good microscope I can buy online? I want to look at microscopic stuff, like what happens if I mix my semen with the blood of a cat, and... wait... wait. No. No. That doesn't make any sense. But seriously, any recommendations from you guys? YouTube videos make them seem like a fun hobby.
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Lawfag here coming to ask you, what are the effects of radiation on the human body? All I've read is some articles on google, but what mutations occur when people are exposed to enough of it, what doses would kill you, and have any of you worked with radioactive material before? Sorry for sounding pleb.
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Hello /sci/, Which field of study (in the sciences) generally has the "nicest" people?
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hey /sci/, /g/ redirected me to you, does someone here have full access to this article? >http://www.sciencedirect.com/science/article/pii/S0007681309001232 I'd need it for a paper, would be really grateful for it! If someone could also find a download for >The Culture of Connectivity: A Critical History of Social Media it would be great! >inb4 /r/..
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check mate, atheist!
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Hey /sci/, I'm looking for some good exercises and/or illustrated examples covering finite-temperature MBT, in particular theory of linear response and superconductivity (specifically the Ginzburg-Landau and the BCS theory). I currently have read Fetter and Walecka's book, but most exercises are a bit too advanced and don't have written solutions. Suggestions?
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I've been spending time lately reading through wikipedia articles about space and celestial objects and have realized that I know very little about the subject. >That's a cool picture, what is it? >Oh, an emission nebula. >What's a nebula, anyway? >Oh, an interstellar cloud. >How do those form? And so on and so on. I was hoping someone could recommend me some books as there seems to be quite a lot of literature devoted to the subject. Introductory stuff is fine but I'm also happy to educate myself should a more advanced book expect knowledge of specific concepts and terms.
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Hello people I'm thinking of getting a DC variable power supply for assorted experiments, fun things, etc. I need it to have a nice range of volts / amps I found this http://www.amazon.co.uk/dp/B00BCPTFGM It seems pretty good, anyone with electrical experience on hand here to recommend anything better, or suggest I hit buy?
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/sp/ here I need some help with a project I'm working on. I want to track every NFL team's relative strength to each other on a game-to-game basis and chart it up in Excel, using only the final score of each game. I tried looking up what kind of mathematical system to pull this off would be best, and found some stuff on ELO, but from what I can infer it only uses win/loss result, and doesn't account for points. What kind of system am I looking for then, and how do I implement that into a spreadsheet?
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