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/sci/ Science & Math

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Most viewed threads in this category

24 more posts in this thread. [Missing image file: entropy.jpg]
Is it possible to calculate the entropy of an irrational number? Specifically, Pi. I'm wondering because a friend of mine stated "because Pi is infinite, every single sequence of numbers should occur within it eventually, every movie, game, etc", but I think claiming Pi has infinite entropy is somewhat dubious. In fact I really don't see it being true at all, because their are irrational numbers with very low entropy, what would make Pi the exception?

Modern Solism

21 more posts in this thread. [Missing image file: 1364839892399.png]
I'd like to introduce Modern Solism to /sci/, as it seems like something many of you could get behind. Modern Solism is a new, non-theistic philosophy/religious movement; none of us consider the Sun to be a 'true' god, but it has done all that a god is said to do, even if it is an inanimate object -- it has created life as we know it, provides food for us and all of the planet, and it's the only thing we could say watches over us constantly. For the significant role it has had in our creation and our reliance upon it for our survival for all of our existence, the Sun is something deserving of our veneration, Modern Solists conclude. We place the Sun as an object at the centre of a set of ideas which present an alternative to the choice of faith in the unverifiable or the concession of nihilism. Modern Solism is all about affirming human identity and encouraging people to work to preserve our species and nature; two of the greatest creations of the Sun. Feel free to come in and discuss, critique, or ask questions. SOL OMNIBUS LUCET

Unification

3 more posts in this thread. [Missing image file: 22222222222.gif]
Can anyone develop a mathematical formula perfectly relating the area of a circle (Ac) to the area of a square (As) so that both have the same value?
7 more posts in this thread. [Missing image file: visionspots.png]
Medical Science? Optometry to be specific? I don't know if this is the right place to be asking but I'll give it a shot. Last Thursday I got sick with flu-like symptoms, cough, sneeze, runny nose, fatigue, sore throat, aches all over, fever, headache. The thing that stood out though was the headaches, it wasnt constant but it was the worst i have ever felt in my whole life, it would go away for a few minutes and then suddenly feel like i got whacked in the back of the head with a 2x4, this sharp pain also happened every single time I coughed. Friday was brutal, couldn't function at work, left early. Saturday all other symptoms were receding but the headaches remained. Sunday I realized something was wrong with my vision, i seemed to be getting a constant afterimage as if I had looked at a very bright camera flash but the pattern was totally different for each eye. Today I was functional enough to work, symptoms are nearly gone including the headaches and the afterimage effect has shrunken but is still there, I am hoping it will recede further until it goes away but it's like nothing ive ever experienced. Anyone seen or heard of such a thing before? Pic related, scaled about 200%, if each field was entire field of visions than patches would be half size, they seem green when seeing and invert to pink with eyes closed.
0 more posts in this thread. [Missing image file: butadienemo.jpg]
What's the fastest way to learn the practical application of MO theory to organic chem reactions?

question

45 more posts in this thread. [Missing image file: 539519_353858854700986_1789632550_n.jpg]
Whats erasmus? Is it for high performing students or hipster who wants to travel and party

Just a Physics question

16 more posts in this thread. [Missing image file: GeoNeutrino3a.jpg]
Hey guys, here´s a question that´s been haunting me for the past few days. Let´s just imagine that half of the earth suddenly dissapears. does that means that the gravity of the earth would also be half of what it used to be?

Adding and Subtracting Exponents With Like Bases but DIFFERENT Powers?

4 more posts in this thread. [Missing image file: image.jpg]
OK, so I'm finally getting around to getting back to college. Took a practice placement test today. Did well. Aced all the babby-tier grammar questions, and aside from a careless multiplication error, there was only one math question that gave me any trouble. Pic related. I've never encountered this before, and I'm wondering if you guys can tell me what's going on here. According to the answer key, the answer is 2^(3/2). A quick google search of the problem yielded a walkthrough to the solution: >rewrite as roots raised to powers >(sqrt2)^5 - (sqrt2)^3 >juggle shit around a little >(sqrt2)^3 * ((sqrt2)^2 - 1) >oohp! We got a square root squared! >2-1 is 1 >(sqrt2)^3 * 1 = (sqrt2) = 2^(2/3) Ok. So, ...what? Why? The question doesn't even give you a prompt like "what is the difference between these expressions" or anything. It's just there, like "we obviously have a problem here. Solve now." Why is this the desired answer? Why are we doing this kind of manipulation? These aren't variables. They're 2's. We can actually perform these operations and get a legitmate, real value (2.8284). Why are we jumping through hoops to subvert Order of Operations and subtract without evalating the exponents? And what's up with the whole "subtracting exponents with like bases but different powers" thing? Can't you not do that? Isn't that what a polynomial is? I get that you can rewrite a difference of terms raised to powers as (smaller power) (term_that_gives_you_the_bigger_power-1), but how does that help you if you in situations where the difference of the powers isn't the same as the root (if there is one)? What kind of problem is this and why? Why?
3 more posts in this thread. [Missing image file: 1358646605459.jpg]
I need to stop sucking at calculus as fast as possible. How do I do this. I'm taking intro calc and I'm not getting the grades I need. Most of my mistakes come from simple things that I overlook, and from not being able to apply the theory to problems we haven't discussed in class. I basically need a method of becoming anally retentive so that I don't mess up with the easy part, and then being able to think more abstractly in order to be able to apply the theory to questions that are not exactly like the ones in class. Please help.
20 more posts in this thread. [Missing image file: img003.gif]
How does one go about measuring the solubility of a substance?
5 more posts in this thread. [Missing image file: night_sky_tree_universe-1280x800.jpg]
The considerable evidence that Mars once had a wetter, more clement, environment motivates the search for past or present life on that planet. This evidence also suggests the possibility of restoring habitable conditions on Mars. While the total amounts of the key molecules, carbon dioxide, water, and nitrogen needed for creating a biosphere on Mars are unknown, estimates suggest that there may be enough in the subsurface (Jonathan). Any hindrance of even quasi-bacteria life forms on Mars will raise an important array of questions dealing with environmental ethics beyond Earth. Anti-humanism (number of perspectives opposed to the project of philosophical anthropology), intrinsic worth (“human use is not the ultimate value and that living systems have intrinsic worth independent of human utility” Team Valencia), Ecocentrism (nature centered system of value), and cosmic preservationism (all natural objects in the universe, including planets and rocks, have rights) all are in direct opposition to any sort of terraformation of any kind. Some even (cosmic preservationism) go as far as making space inaccessible. The main theme here is the importance of natural balance and its uniqueness that is threatened by humanity. Arguments such as should mankind terraform Mars if it means destroying the Martian organisms in the process need to be considered? Is the value of humanity more valuable than the lives of alien natures and organisms? Do humans have a right to explore space? To a regular person, such questions will have simple answers, but to scientists who will take on the task of conquering space, they will become issues. PART 1
0 more posts in this thread. [Missing image file: HereIsAFuckingGraphYo.jpg]
My /Sci/ Allies, I'm doing a research project on predicting graphical trends with Machine Learning/Data Mining techniques and was wondering if anyone out there studying Mathematics could share some advice on graphs with me. Not sure if this is under "Graph Theory" or not but it sounds like this is up that alley. I was also looking at Stochastic Calculus, as someone told me looking there may help out. Any takers? Much appreciation in advance
20 more posts in this thread. [Missing image file: Capture.png]
https://www.youtube.com/watch?v=tu57B1v0SzI Yes, this is a common repost on /sci/, but today I invite you to take a look at the comments and tell us how they make you feel

Michio Kaku

38 more posts in this thread. [Missing image file: Michio-Kaku-Can-Nanotechnology-Crea(...).jpg]
Hello /sci/, I have recently become quite fond of Michio Kaku and his work on string theory. What is your opinion of Michio Kaku?
1 more posts in this thread. [Missing image file: nigga_nigga_you_gay.jpg]
Any help?

Justification Vs. Knowledge

0 more posts in this thread. [Missing image file: Epistemology.png]
There is no doubt how we got here as humans in the 21st century is in part due to the phenomenon of justification. Examples of justification: >Wagering on a random horse to win, and it does. >Religious prayer before scientists in the '50s discovered the placebo effect. Somewhat related due to the fact science considers justification invalid due to lack of empirical evidence
5 more posts in this thread. [Missing image file: image.jpg]
I have a question /sci/. If I were to be close to the centre of a large gravitational point, such as a star, and then I shon a beam of light to you, who was in a position where spacetime wasn't distorted, would you not see me shine the beam of light slower and in theory light itself is slowed down? Just a simple question that's been bugging me the past few days.
6 more posts in this thread. [Missing image file: science.png]
Science.
4 more posts in this thread. [Missing image file: Unbenannt.jpg]
Is the mass of a doughball increasing, when you are pressing it into a flat shape?
4 more posts in this thread. [Missing image file: image.jpg]
Hey /sci/, high school senior here. I was just accepted to the honors program at the University I'll be attending in the fall. What are your thoughts about honors/ honors programs in general? The main facet of this program is undergrad research and prep for Grad School, is it the same for most other places? Thanks! And so this is science related(ish) I'll dump NASA pics.






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