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/sci/ Science & Math

Threads added between 2014/01/28 22:00 and 2014/01/29 04:00

18 more posts in this thread. [Missing image file: low IQ.png]
>that retard feel when you are not intelligent enough to solve this
41 more posts in this thread. [Missing image file: pythgrn.gif]
you have 3.14 minutes to prove Pythagora's theorem you will lose
12 more posts in this thread. [Missing image file: dora.jpg]
Which field of study that is chemistry related needs more funding? and why?
18 more posts in this thread. [Missing image file: florida sign snow.jpg]
Do you turbonerds actually think global warming is real? It's snowing in Florida, for God's sake.
33 more posts in this thread. [Missing image file: 2342343455.jpg]
I don't really understand the culture of cynicism here on /sci/. I assume it is at least partly due to inflamed egos as a result of being part of the "chosen few," the intelligent, logical, careful, etc., but it just seems to me that a lot of the real scientists I know are friendly in general. Tl;dr Why are people so bitter on /sci/?
6 more posts in this thread. [Missing image file: 1390439404232.png]
Hello, /sci/entologists. You know how armor-penetrating shells can bounce off of tanks? What if the tanks were coated in pure teflon? Would it increase the chance of a bounce?
19 more posts in this thread. [Missing image file: real life.jpg]
Welcome to academia.
3 more posts in this thread. [Missing image file: pancakesontheroof.jpg]
>pic unrelated So, here's something kind of odd that I noticed. Rubbing alcohol (more specifically, 70% concentrated isopropryl alcohol) has a pH balance of 7, the same as water, right? But, if you put an effervescent (pH balance of 6.8) tablet into a container containing rubbing alcohol, it takes significantly longer for it to dissolve than in an equal amount of water. Why is this?
6 more posts in this thread. [Missing image file: 1386546646860.jpg]
Alright, I've been told that the good computer languages to learn are C#, Java, Javascript, Visual Basic, HTML, and CSS if I want to make some easy money. Which one out of those should I learn first and would make it easier to learn the others or program better? Please help. I've been wasting away playing too many video games/watching cartoons and I just want to take a couple of online courses and hopefully start earning a decent living soon.
3 more posts in this thread. [Missing image file: PID.jpg]
en.wikipedia.org/wiki/Computer-automated_design there are some good books about it?


8 more posts in this thread. [Missing image file: alcohol.png]
In the second episode of the third season of BBC's Sherlock, namely "The sign of the three", we see Sherlock calculating the ideal ammount of alcohol to be taken by him and John to maximize their happiness in John's stag night (in the words of Molly Hooper, "Light-headed - good. Urinating in wardrobes - bad.") From the Baker Street Wiki: "Lestrade and Tom attempt unsuccessfully to guess how the murder was done, and Sherlock explains he never solved it. He then moves onto the story of John's stag night, where he calculates exactly the right amount of alcohol to consume in order to have the perfect evening. However John sneakily adds extra shots to Sherlock's drink, causing them to become drunk and get into a fight. They go home and start playing a game of guessing who's name they have on their forehead. A client, Tessa, then enters and tells them she believes she has been dating a ghost. They go to the flat she last saw her date, but Sherlock vomits and the landlord has them arrested." In real life with acquirable variables (e.g. person weight, blood electrolyte levels, metabolism rates), is it possible to calculate such ideal alcohol intake? How would be such feat achieved? Can the same reasoning be extended to "optimizing the desinhibition" of a young woman?

Relativity Sucks

29 more posts in this thread. [Missing image file: trainExperimentV02.gif]
I have a fun thought experiment for you kids to try out! Do you remember Einstien's Photon on a train experiment? If the train were not moving at all the photon would move between the mirrors as fast as is possible. If the train started moving the photon take longer to complete its trip between mirrors. If the train could move at the speed of light the photon would be suspended between the mirrors. NOW. Consider our treatment of space and time for this experiment. Did we modify space or time to make the particles oscillation slow down? If space and time are not constants would it be possible to conduct Einstein's thought experiment? What do you think? I look at this experiment and I agree the photon is taking longer to traverse the distance between the mirrors, but I don't see any need to assume that space or time are warping, and if I do assume space and time are warping this experiment becomes impossible to predict. Is the train on the right really moving "faster?" So if space and time are not warping what causes time dilation? Wouldn't it make more sense to say time dilation arises because of the constant nature of energy (the photon) interacting with the INCONSTANT nature of matter (the mirrors on the train). That's way easier than trying to distort space and time. What do you think?
5 more posts in this thread. [Missing image file: math help boys.jpg]
any help this one has me stuck. or link me to a video explaining how to do
3 more posts in this thread. [Missing image file: image.jpg]
Am I fucked /sci/? >be third year premed >premed for the science not the money I wanna do docs without borders. >I'm only good at regurgitating information, so dr. Is right up my alley right? I heard once that memorization is the lowest form of wit. That holds true to some degree. But I find bio classes simple even upper division ones. Yet I find myself barely being able to scrape by in basic linear algebra and gen chem. So I want to go medical route with only a very very strong basis in medicine/biology but a very weak basis in physics/maths. Chem is kinda iffy for me. But I can probably pull through. Do you guys think that memorization is somethkng that makes someone "smart" or do you think only being able to solve complex equations and stuff can make someone a good physician?

How does Time traveling work in practice?

5 more posts in this thread. [Missing image file: 1384722548498.jpg]
There are multiple theories about time traveling. One is "proven": The time slows down according to your speed. The satellites in space are traveling faster than us, thus their clocks slows down a bit. So by traveling at the speed of light, you would travel without the time. So the time stops when you are traveling with the speed of light. Then you would travel forwards in time, because when you slow down, the time around you will have gone in the "regular" speed, while being still in your time. Another completely "inverse" theory by Einstein is that extra dimension. The space time. So if you make a wormhole, you would be able to travel past the "bends" in the space time, thus traveling faster than the light. If you arrive before the light, then you would have traveled back in time. I also want to point out that some physicists have managed to send messages back in time with the help of photons, even though we are only talking about microseconds. (I just saw an interview on Discovery Channel..) Which of these (or both) is generally believed to be true, if any? And what about the paradoxes? Do you know any paradoxes regarding this? Maybe you are able to solve them? (One I've found is that if you travel into the future and grab a product that you start selling in the presence, the product will be in the future because you got it while time traveling. Who did make the product in the first place? I'm mostly interested in the paradoxes created while time traveling.
3 more posts in this thread. [Missing image file: bVt0AA6.jpg]
do you respect people with mechanical engineering degrees at all?
18 more posts in this thread. [Missing image file: eye-first.jpg]
Hey /sci/. I've been having a facebook argument with someone over water fluoridation, and I've been able to dismiss basically everything they have said pretty easily. The only thing that has stumped me is that fluoride apparently causes the calcification of the pineal gland. Is this somehow not important when it comes to the u.s.'s fluoridation limit, or perhaps not actually a bad thing?
3 more posts in this thread. [Missing image file: 13ib5Fs.png]
>be me >Kidnapped by cult >wake up in large white room >lots of supply crates >look out window >its fucking mars >find communicator for 1 good call back to earth >A note with NASA's secret number is next to communicator >I call, tell them I only have 18 months supplies >they won't help me even though they believe me What do /sci/?


8 more posts in this thread. [Missing image file: image.jpg]
What do you guys think about Andrea Rossi's E-Cat cold fusion electricity generator?
5 more posts in this thread. [Missing image file: Andromeda.jpg]
OK. I posted once. Deleted. Waited a few days. Now that Stephen Hawking has backed off of the singular model, are you ready to do the same? http://www.youtube.com/watch?v=-k-IW90lMSQ
0 more posts in this thread. [Missing image file: 1390909097489.jpg]
What is this signal I'm getting on my radio? It doesn't seem naturally occurring http://www.wikifortio.com/832002/recording.mp4
6 more posts in this thread. [Missing image file: stickman.jpg]
Discuss interesting things about oxytocin.
1 more posts in this thread. [Missing image file: binding.gif]
so /sci/, why does binding energy per nucleon decrease with larger nuclei? i figure, the energy of the free nucleons is constant, so that must mean more nuclear energy per nucleon in larger nuclei, but what exactly does that mean? i can understand the nucleus being less stable as it gets larger, 'cause the strong force has smaller range than the electromagnetic force, but does that mean the nucleus has more energy? like, the protons are pushing each other around more or something? have i got this right?
3 more posts in this thread. [Missing image file: 1389823017286.jpg]
Hey sci. I feel like signifigant figures are really imprecise. Does anyone else agree?
4 more posts in this thread. [Missing image file: NRO.gif]
What would be the implications to science and epistemology if it were proven that technology suppression exists? If, theoretically, there was an element of a countries military or a place where government and private industry collides and is beyond the public, and collegiate, view of technological advancement how would this effect the study of science and the advancement of the human race?
0 more posts in this thread. [Missing image file: tumblr_mwj6lv5Ihb1sh5p73o(...).jpg]

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