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/sci/ Science & Math

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Most viewed threads in this category

8 more posts in this thread. [Missing image file: 100 Percent Plus.png]
Can a sample have a % Transmittance greater than 100%? Pic related. I have a sample conjugated polymer film on Indium Tin Oxide coated glass. Focusing on the blue curve, at ~1200 nm the %T goes beyond 100%. It appears to be an index match issue. Does anyone have any references that explain this phenomena?
47 more posts in this thread. [Missing image file: sneaky-cuttlefish.jpg]
What hypotheses are there for the evolutionary purpose of fetishes? It doesn't seem productive to make it so I can only get off to forced feminization fantasies.

How Autistic is /sci/ really?

120 more posts in this thread. [Missing image file: Screen Shot 2014-01-12 at(...).jpg]
One of the most popular insults on here is calling someone "autistic". But how autistic are /sci/entists really? I'm a math major. Attached pic is my score. http://aq.server8.org/ Take the test and report back your major & result. PS: No need to pretend or fake your score… it's an anon board so just be honest.

Astronomy PSA

48 more posts in this thread. [Missing image file: Untitled1.png]
Ok so I saw this argument a few weeks back so I figured I should point this out to some people. This is to the people who use "sol" in an English speaking country on an English speaking website. Using sol in the place of Sun in everyday usage of the word is improper.Sol does have many definitions, in chemistry, music, and yes it does mean Sun in Spanish, but it is not interchangeable with Sun. This is because sol is already used in astronomy. It refers to the time a planet other than Earth(most commonly Mars) takes to orbit the Sun, but you can not call these "days" because a day is strictly an Earth sol. Nor can you call sols orbits because an orbit is the path a planet takes rather than the time. You can argue this if you want but that won't change what it really is. Now that you know this you can continue using sol in any way you want, but just know it is extremely aggravating when someone refers to the Sun as "sol" to me and probably anyone in else in an astronomy field. It will give you a pseudo-intelligence/pompous vibe, even if you know what you are talking about.
12 more posts in this thread. [Missing image file: 250.jpg]
Do we have scientific evidence that mathematics exists? I hear from people that the universe is governed by mathematics and this expression doesn't seem right. It almost sounds as if the universe came up with mathematics.

Why does this happen to me?

0 more posts in this thread. [Missing image file: image.jpg]
Damn. I just had a moment of clarity about what I believed to be the universe but now that I have gone to type it in /sci/ i have forgotten it. Fuck.
1 more posts in this thread. [Missing image file: 11076637544_3e1fa39fed.jpg]
How does the reverse pyramid boarding strategy for airlines work?
4 more posts in this thread. [Missing image file: 1533895_10203002081832560(...).jpg]
If You're so smart, why can't You name this bird?
11 more posts in this thread. [Missing image file: Embers_01.jpg]
What's the chemical difference between burning with a flame and just smouldering?

Characterizing Human Movement with the Wii Board

2 more posts in this thread. [Missing image file: wiiboard.jpg]
Dear /sci/, I am a masters student in physics currently studying in London and I am in need of some ideas with where to take my major project. The title I have been given is "Characterizing The Human Transfer Function With The Wii Balance Board". The Wii board/Wiimotes/etc. are hooked up via bluetooth to my laptop using some linux specific python libraries. ANYWAY... The project is extremely vague and has to justify 200-400 hours work or so. My supervisor said he is there to provide some guidance and the such but not to tell me what to do. tldr: Ideas for where I can take this?
4 more posts in this thread. [Missing image file: 1817927399_1385431416.gif]
Alright, smartasses, Explain breathing and photosynthesis.
10 more posts in this thread. [Missing image file: RICES.jpg]
Quick question /sci/ When you get a sports injury, medical personal say RICEs Isn't RICES detrimental? The human body naturally repairs itself by increasing blood flow. By Icing and compressing and elevating, your reducing blood flow. Isn't that detrimental?
5 more posts in this thread. [Missing image file: McGonagall.jpg]
what's a formal and basic introduction to ODEs? something that only assumes knowledge of single variable calculus and linear algebra and it's formal

The Existence of Whiteholes

22 more posts in this thread. [Missing image file: 3d1a43c1-0c12-43de-96e1-4(...).gif]
So I'm working on my senior research paper and unlike the rest of my classmates who chose boring and mundane topics, mine will be over the theoretical existence of Whiteholes (a blackhole's counterpart). I'd love to hear any insight /sci/ might be willing to share. This includes personal knowledge, links to books or pages, and possible Skype interviews if possible!

Special Relativity proven wrong

1 more posts in this thread. [Missing image file: borat.jpg]
In his book 'Relativity: The Special and General Theory', Einstein gives a seemingly simple and elegant derivation of the Lorentz transformation which goes as follows: he considers the 'equations of motion' of a light signal in the unprimed and primed frame (1) x-ct=0 (2) x'-ct'=0 and correspondingly for a light signal travelling along the negative x-axis: (1a) x+ct=0 (2a) x'+ct'=0 (note that Eqs.(1a) and (2a) are not written explicitly in Einstein's book (see here)). From these equations, he concludes then (3) x'-ct'= ?.(x-ct) (4) x'+ct'= ?.(x+ct) and by adding and subtracting Eqs.(3) and (4) he gets the formal Lorentz transformation (5a) x' = ax -bct (5b) ct' = act -bx where (6) a= (?+?)/2 (7) b= (?-?)/2 . Now it is obvious that the equations (1),(2) on the one hand and (1a),(2a) on the other are algebraically inconsistent unless the first set of equations is restricted to x,x'>0 in the first case and x,x'<0 in the second. So the generalized Eqs.(3) and (4) must then be restricted in the same sense in order not to violate the original constraint. But Einstein simply ignores this, and assumes that (3) and (4) hold both for positive and negative x,x' in order to be able to add and subtract the equations.
11 more posts in this thread. [Missing image file: 1x01-Winter-Is-Coming-tyr(...).jpg]
Is it possible for a planet to have season lengths that are variable as in the Game of Thrones series, or A Song of Ice and Fire? Like, have a winter that lasts a few (Earth) months followed by a few months of summer/autumn followed by a winter that lasts 5 years?

Everyday Problems

11 more posts in this thread. [Missing image file: 1378346741124.jpg]
Hey guys, post some every day problems for me to *attempt* to fix with an engineering solution. Kind of a hobby of mine, will post results if possible. Would prefer a rather "simple" every day problem, Cant cure world hunger or make a never ending beer. Thanks fellas
10 more posts in this thread. [Missing image file: Beethoven.jpg]
How would you compute the 1000th derivative of e^{x}sin(x)
13 more posts in this thread. [Missing image file: GBvFMYV.jpg]
Why the domain of definition of this function ln(x+?(x2+1)) is R? I can't figure it out :/
38 more posts in this thread. [Missing image file: 5ba12f4158ade0f362147248b(...).jpg]
What are your thoughts on this picture. I'm sure many of you may think it's a hoax. But here's a few facts to date. >Nine or ten ribs instead of the 12 that is found in a healthy human skeleton >DNA is 94% human >Bones contain millimetre sized holes consistent with arteries fuelling bone marrow. This suggests that if it was a hoax, it was performed by the best micro-surgeon in the world >"The X-Ray and CT scan show an intact, actual biological humanoid organism, without question. Astonishing 3-D images were able to be constructed of the body from the detailed CT scan, and we were able to see internal organs such as lungs and what I am fairly sure is a heart structure" >"I can say with absolute certainty that it is not a monkey. It is human -- closer to human than chimpanzees. It lived to the age of six to eight. Obviously, it was breathing, it was eating, it was metabolizing. It calls into question how big the thing might have been when it was born" So, what is /sci/'s thoughts? Deformed human or first alien corpse which the governments couldn't take control of?






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