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/sci/ board - Science & Math - May 2014

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Most viewed threads in this category

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http://www.iflscience.com/physics/scientists-create-most-powerful-acoustic-tractor-beam-date
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How can logarithms be used for mental calculations?

How can logarithms be used for... 4 posts and 0 image replies omitted. Click to view.
I heard that you can multiply and find square roots easier using logarithms when mentally calculating - multiplication becomes addition and finding a square root becomes a division by two, etc. How is this done? What does one have to memorize to be able to do this?
What the fuck are canonical... 6 posts and 0 image replies omitted. Click to view.
What the fuck are canonical commutation bracket quantization? i mean, i know how to use them, i know the 'replace poison brackets with commutators' shit, and i can see how it works, but why does it work? how do the commutators change an equation into the same thing that you get from path integral quantization? can you use it in any situation? is there a derivation showing why you use commutators when you want the properties of QM? why do you use an equation relating energy and momentum to quantize a system? not one of my QM or QFT courses said anything except; 'here they are, now use them.' are there any textbooks or papers that focus specifically on this?
whatup /sci/,I'm having a... 3 posts and 0 image replies omitted. Click to view.
whatup /sci/, I'm having a bit of trouble visualizing a polar curve. I understand that ? and r are related to x and y, and i understand that x = rcos? and y = rsin?, but it's very hard for me to literally understand which values are which when looking at a polar graph. For example, when I see a cardoid (http://paulscottinfo.ipage.com/DC/cardioid/cardioid-graph.gif) I keep finding it difficult to conceptualize the equation that fits with it (1 + cos?). TL;DR: Polar curves are extremely difficult to conceptualize for some reason. Could anyone give me some pointers on how to understand these graphs? Thanks!
How does science explain Near... 29 posts and 0 image replies omitted. Click to view.
How does science explain Near Death Experiences? Including Outer Body Experiences?
There are three possibilities... 1 posts and 0 image replies omitted. Click to view.
There are three possibilities for the the existence of the universe: 1. It is Uncaused 2. Self-caused 3. Caused discuss.
How do I use surface integrals... 4 posts and 0 image replies omitted. Click to view.
How do I use surface integrals to calculate the flux of vector field F(x,y,z) = (x^2y)i - (2yz)j + (x^3y^2)k through x=1 y=2 z=3 in the first octant?
If you took the infinityth... 15 posts and 0 image replies omitted. Click to view.
If you took the infinityth root of infinity, what number would you get?

Sleep Schedules

Sleep Schedules 15 posts and 0 image replies omitted. Click to view.
What do you /sci/entists think about sleep shchedules? Have any of you ever tried something like the "uberman" to try and become more productive by having more time in a day?
Can someone explain to me why... 15 posts and 0 image replies omitted. Click to view.
Can someone explain to me why its said that exoskeletons would never work on large animals because something would collapse under its own weight? I mean obviously yes, the skeleton is heavy. But if the legs are blown up proportionally, wouldn't the insects strength go up proportionally as well allowing it to carry the skeleton?
ITT: Experiments you would... 84 posts and 0 image replies omitted. Click to view.
ITT: Experiments you would conduct if ethical quandaries were no object. Mine: >Raise different combinations of children (a single child, a pair, etc) without natural language in an otherwise nourishing and intellectually stimulating environment.
Is there a science that... 13 posts and 0 image replies omitted. Click to view.
Is there a science that incorporates modern day, empirical science and the human consciousness to find the universes secrets? and if not, why? Ive heard quantum physics is connected to consciousness somehow. pic unrelated
Grothendieck basically sounds... 3 posts and 0 image replies omitted. Click to view.
Grothendieck basically sounds like "big dick". Do you know how many children he had with the many different women? How can such a whore do such great mathematics? Also, general algebraic geometry thread. I'm currently looking at using motivic integration to explain Feynman's path integrals. Basically motivic integration is an entirely geometric integral, with no notion of a measure. This is good, because path integrals cannot lead to a measure - there is no infinite dimensional Lebesgue measure!
How is intelligence related to... 18 posts and 0 image replies omitted. Click to view.
How is intelligence related to creativity?
do electrons slam into... 2 posts and 0 image replies omitted. Click to view.
do electrons slam into protons, making them neutrons?
How much would it cost to... 6 posts and 0 image replies omitted. Click to view.
How much would it cost to start a biological laboratory in my basement? Would it even be legal? Perhaps I want to carry out my own research
What is /sci/'s opinion... 44 posts and 0 image replies omitted. Click to view.
What is /sci/'s opinion on hexafluorosilicic acid and all it's derivatives being marketed as a health aid? From what I understand it's quite literally poison, and has very recently been classified as a developmental neurotoxin by The Lancet. I understand that it supposedly possesses remineralisation properties when applied topically to the teeth, but surely negatives of it potentially being absorbed into the blood stream via the gums outweighs any positive it might have on the teeth? And if it's so good for teeth, then what the fuck is up with dental fluorosis?
Nothing is as it is, but... 9 posts and 0 image replies omitted. Click to view.
Nothing is as it is, but everything is as it was. Completely true. Faggots. Physics wins all.

Objectivity of Science and Human Perception

Objectivity of Science and... 22 posts and 0 image replies omitted. Click to view.
Is Science Subjective? Serious question. Given that science is based on human perception of the world, if we were to meet an alien race would their science and mathematics be different from our? If this is the case. What is the objective form of science?
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