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What are your thoughts on nanomaterials/nanotechnology?
Is pursuing a degree in this field worth it?
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>>8482272
meh, nanotechnology is still in it's early stage, check some materials science first
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The illuminati won't let us build it!
Tyrants!
They already discovered a machine-to-brain interface for nanotechnology. Wow!
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>>8482283
Nowadays nanomaterials are included in MSci materials courses anyway. Sometimes even BEng/BSci too
Anonymous
Don't know if light refracts the same way underwater as it does in space? 2016-11-19 00:03:06 Post No.8482252
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Don't know if light refracts the same way underwater as it does in space? 2016-11-19 00:03:06 Post No.8482252
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Don't know if light refracts the same way underwater as it does in space?
Anonymous
2016-11-19 00:03:06
Post No. 8482252
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>Help a freshman pleb out /sci/?
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Nearly the same. Index of refraction in air is only 1.00029. Index of refraction in vacuum is just 1.
The only real problem would be that in hard vacuum, you wouldn't necessarily have a stable surface of water except at very cold temperatures.
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>>8482252
Wat? Refraction happens at an interface between two mediums with different refractive indexes.
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>>8482277
Through a medium is always a given for light refraction vectors right?
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Is it physically possible to invent perpetual motion? Could my crudely drawn picture of a machine on MS paint actually work?
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1.No.
2.No, you didn't even think about air resistance. And involving wind or sunlight automatically disqualifies it from being perpetuum mobile.
TL;DR Thousands of spergs before you tried this, it's impossible, as was shown in a million different ways.
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>>8482040
thanks ok I'll stop
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> large ufo shaped container
> extremely strong arm at ninety from bottom that that can spin
>magnet at end
>magnets all around
>put charge on magnets iteratively
> have controller with GUI, proper cooling all that shit
> profit faggot
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Since there seem to be some med anons here i would like to ask something.
Approx. 2 years ago i started having a burning pain at exactly the spot pic related. In the beginning it sometimes felt very painful. My doctor gave me Pantopracol which helped very well and i got a gastric reflex, where a Gastroesophageal reflux disease got diagnosed. The doc said its kind of unusual that it produces pain in such a specific location but it can happen.
Now since the pantopracol helped so good i didnt really think about it too much anymore. It sometimes came back but i would just take one pill for a couple of days and it would go back again.
But now, since 3 to 4 months it is back exactly at that spot together with a number of other symptoms. Pantopracol doesnt help anymore, but the pain is also less strong, but more persistent. the other symptoms are sleeping disorders, chronical infections in the respiratory tract, mild diarreha as well as mild constipation, dizziness, breathing problems, and mild joint pain. I suspect i have some kind of chronic infection, but all these symptoms dont bother me as much as the almost constant pain at pic related. What exactly could it be?
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You have torso cancer. Your only chance is to cut off your torso. I suggest using a knife warmed up in the microwave so it cuts easier. You an do the operation yourself.
Post pics
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>>8481721
its because you're a fat ass.
stop being a fat ass.
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>>8481721
See a gastroenterologist. You might have an ulcer or a precancerous intestinal metaplasia
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>The Bion Ring is based on the design of an ancient sandstone ring, known as the 'Assouan Ring'. The ancient ring is thought to act as a quantum filter, and potent amplifier of bio-resonant frequencies, through sympathetic resonance technology.
Does any of this have meaning.
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>>8481508
>>The Bion Ring is based on the design of an ancient sandstone ring, known as the 'Assouan Ring'
Correct
>The ancient ring is thought to act as a quantum filter, and potent amplifier of bio-resonant frequencies, through sympathetic resonance technology.
Ayy lmao
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>Modern analysis of the Bion ring, (based on the design of the original Assouan ring) using Vegatest electronic equipment, as well as kinesiology, confirms De Belizal's conclusions: the ring creates a powerful protective "cocoon" around the wearer, significantly reducing electromagnetic, geopathic and other stress.
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>>8481508
I'm not bion it.
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What is your favourite life domain and why is it Archaea?
Pic related is Archaea being best
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are you a microbiologist?
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>>8481427
3rd year undergrad
You didnt specify why you think archaea is best anon
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>>8481506
I never claimed archaea were bestest, although I find them interesting. Not my field though, but if I choose a masters in microbiology I'd love to do some research in that area
Average age the water molecules we live with: billions of year or seconds? In school they said most water is "as old as the earth", in chemistry they said "water as a solution constantly splits in and recombines from H+ and OH- ions within seconds".
So, if I fill a glass of sea water, which average age can I expect the water molecules to have?
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>>8481327
define age
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>>8481327
The atoms that make up our water are as old as the earth, but if you consider a water molecule that disessembles then reassembles to be new on each ressembly then no water is pretty new
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>>8481328
water molecule age: timeinterval from "three individual atoms (2xH, 1xO) combining to a single water molecule" until "one of the atoms leaves the molecular structure" (maybe being replaced by another individual atom, maybe rejoining the structure)
>>8481332
does this really mean, that even a single water molecure dissembles/reassembles continously? Which is a typical time frame for a dissembling/assembling cycle (room temperature, ~20°C)?
Wow, sounds fascinating... sounds like it's worth further reading... if the process of split/merge is endothermic, then water would faster lose energy and freeze, I guess...
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Would you go to a restaurant with this kind of robot waiter? How would you improve the design?
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kafkaesque, OP
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>>8481180
Thanks!
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>>8481179
Too close to the floor, so needs taller and thicker legs for stability and hygiene, unless moving on some kind of elevated platform
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Can someone explain to a retard why the action potential overshoots?
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>>8481124
It's due to voltage controlled gates.
As the cell depolarises, these gates become all open and let sodium in and potassium out, leading to hyperpolarisation (the overshoot). It's basically a phase of positive feedback between the gates and membrane polarisation.
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>>8481131
Thanks but what causes inward diffusion of sodium to overcome repulsion from the accumulating positive charge?
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>>8481124
Khanacademy has pretty good videos about this subject. https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/neuron-membrane-potentials-2014-03-27T17:58:17.207Z/v/neuron-action-potential-description
Any good books on Lagrangian and Hamiltonian mechanics? I got Landau and Lifshitz series, is it any good?
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>>8481046
>Landau and Lifshitz series
That or Susskind's Theoretical Minimum. Alternatively, start with Susskind and then just skim through LL: the former gives a really good overall summary, while the latter goes into some more details.
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>>8481046
Foundations Of Mechanics by Ralph Abraham
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Goldstein
it's T H I C C
but it's done right
Victor
P is less than NP for any alphabet 2016-11-18 06:32:39 Post No.8480980
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P is less than NP for any alphabet 2016-11-18 06:32:39 Post No.8480980
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P is less than NP for any alphabet
Victor
2016-11-18 06:32:39
Post No. 8480980
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P is roughly A^A*
and NP is roughly A•A
This essentially proves you can get to two items faster on a computer in, in at least one instance, than to one. I.e. "Modern" Walmart computers
According to the problem statement of the question by Clay Mathematics Institute.
If you do it with R, Z, and N
You get roughly
P:NP:10:39 in number of infinities
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>>8480980
Before this post:
[X] Not thinking
[ ] Thinking
After this post:
[ ] Not Thinking
[X] Thinking
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>>8480985
Thanks. I'm making progress in my research.
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>>8480980
this isn't even wrong it's just the horrible
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ive been thinking lately about how far the universe reaches and what its limits are. a popular theory is that the universe is infinitely big. the part that gets me all confused is that it also means that if i were to travel far enough in one direction i should eventually run into an exact copy of earth with an exact copy of me posting this exact same post at this very moment. this also means if i were to continue to travel even further ill run into another earth duplicate except on that earth that version of me became filthy rich and lives a completely different life style. lets say i travel even further and i run into an earth that dragons are real and flying around burning villages down. if the universe truly is infinite than there should be an infinite number of me with the technology to actually travel far enough to run into me. should this mean that i should of already met one of my copies? i feel like im missing something here.
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>>8480973
The universe isn't actually infinite. The universe is just so unimaginably large that they just are too lazy to explain it and humans can't relate to large numbers so it is easier to tell retards it is infinite. The correct term should be it is ulimited because it is constantly expanding. The real trick is what exactly is it expanding into?
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>>8480973
OP, that's not what infinite means. If i divide 10 by 9 and get 1.1111111111... , i say the 1s are infinite. This doesn't mean that if i look far enough down the line i will eventually find a 9. The universe is infinitely empty space. You won't find everything imaginable somewhere in the universe
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What if scientists and mathematicians are the idiots and everybody else are geniuses?
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>>8480972
So, tell me how help is Social Work and how smart they're OP
Please tell me more
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>>8481007
*helpful
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>>8480972
Seems legit, you have to have a certain level of autismo to conjure up maths and sciences.
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I've got a week and a half to study for the GRE
am I fucked /sci/bros?
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>>8480879
you're gonna study for it?
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>>8480879
no. Just cram it for like a week and chill the other 3.5 days
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>>8480879
the "magic" looks kind of out of place
oh and i dont know wtf GRE is
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Is wake and baking chemistry ever enjoyable?
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>>8480867
is wake and baking for chemistry ever not enjoyable?
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>>8480885
Will I be confused AF?
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>>8480894
Not really.
I went to gen chem lecture high as fuck one time and was fine, aside from the laughing fit the professor brought me in to. I got up and left cause I couldn't stop.
He was quite funny