Anonymous
All questions on magnetic field -- let's understand it 2016-08-31 15:55:20 Post No.8311380
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All questions on magnetic field -- let's understand it 2016-08-31 15:55:20 Post No.8311380
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All questions on magnetic field -- let's understand it
Anonymous
2016-08-31 15:55:20
Post No. 8311380
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So here are mine:
1. What causes magnetic field? How do electrons at each point know what trajectory they must go? Is there quantum mechanics involved to answer this question just like with question "why does the light reflects the way it does"?
2. How to draw magnetic field for a given case? From a mathematical standpoint, of course. Personally I expect some integrals involved because of some similarity with the concept of a flow. For example, how do I figure out possible magnetic fields of a cone magnet?
3. Why do some materials not react to magnets?
That's all for now
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>>8311380
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>>8311412
Is there some description for this pic I can find?
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electrons travelling at relativistic speeds undergo contraction and this fucks with charge density in regions of space
Be in microbiology class.
>"You must get familiar with the smellz of each microorganism"
>Smell petri dish with a Proteus genus
>Ughhhghhhhhhhhhhhhhh
>Can taste it on the roof of my mouth ever since
This is bad lab practice right?
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>>8311333
Maybe you shouldn't have snorted it. Not everything is a potential recreational drug.
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>inhaling bacteria
Your lab teacher needs to be fired
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>>8311333
wouldn't you at most waft the scent upwards with your hands instead of huffing the dish like a 16 year old cocaine slut?
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http://www.ibtimes.co.uk/emdrive-nasa-eagleworks-paper-has-finally-passed-peer-review-says-scientist-know-1578716
Looks like the savior of humanity has just been confirmed. Is /Sci/ Hopeful? I think were all gonna be alright boys
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yet no working applications...
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>>8311327
...because they ALWAYS go from "proof of concept" straight to "MASS FUCKING PRODUCTION!"
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ARMCHAIR SCIENTISTS BLOWN THE FUCK OUT
Eat it, faggots. Literally nobody liked you being no-fun shitbags who couldn't believe something new had been discovered, and now you're just blatantly fucking wrong pissants.
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>a supermassive black hole exists at the galactic core of our galaxy
Astronomy on suicide watch
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what is this shitpost trying to convey?
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>>8311297
The center of the galaxy is illuminated as fuck
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>>8311284
Since we live in a deterministic universe, how come people still believe in free will?
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https://en.wikipedia.org/wiki/Compatibilism
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>>8311209
The question annoys me because it comes down to the way you define either question. Its sort of a rorshach test where your answer says a lot more about you than the question.
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>>8311209
Because not everyone has the whole universe figures out like you apperently do anon.
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Reposting this question from /g/, they said you /sci/entists might be able to help me.
What I thinking is that the technology might be a longer lasting /more powerful battery.
A lot of the inventions of the past were laughed at, now we can't do without some of them.
The guys on the tech board ironically don't want to talk about future technologies and their scientific applications... they just want private trackers, desktops, and dressing up as girls to program better.
>>>/g/56350241
Hey wood/g/screws, e/lit/ist here.
I was wondering with the current technology we have atm, how long do you guys think we will be able to harvest the power of the sun and store it as liquid fuel?
Would that be possible? Put out giant solar collectors, and have them condense light into liquid? Would we ever be able to condense light to liquid?
Is this wishful thinking like having a fully functional quantum computer?
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>>8311154
How do you condense light into liquid?
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>>8311154
Woah bitch in lower right be seeking revenge for all dem other potatoes killed for her vodka
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>>8311791
I meant left shit
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Did a bit of reading on Protons and Neutrons.
If Neutrons are composed of two down quarks and an up quark and Protons are composed of two up quarks and a down quark, how do neutrons decompose into a proton, an electron, and an anti-neutrino? If they decompose, though, that would mean that the Neutron is less stable as a neutron unless energy is put into it to create it, yes? So since it is solely composed of three quarks, yet decomposes into something also made of three quarks PLUS two more elementary particles, does that imply that the two other elementary particles aren't really even particles as we would think, but rather states of stored energy?
Or that maybe quarks' spin states are influenced by the addition of extra particles, like, say, a down quark is not an elementary particle, but rather an up quark with an electron and anti-neutrino bound to it?
I literally know nothing of particle physics beyond what I learned in high school and all the big words I just used I learned from Wikipedia last night, so excuse the potential retardation of the question.
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>>8311127
>how do neutrons decompose
https://en.wikipedia.org/wiki/Weak_interaction
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>>8311250
But they decompose into more than they're made of. They're made of 3 quarks, but decompose into something else made of 3 quarks, plus two more particles.
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>>8311308
downs are 2x heavier than ups
How do we know that we all see the colours the same? i mean maybe for some people green looks like blue and opposite.They see blue and just call it green. Blue grass, blue pepe but they dont think its weird cause it was natural for them from birth and our "green" would look weird for them
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And how do we know we all see the shapes the same? Maybe some people see triangles as circles or lines as dots, it seems natural for them because of their notions of shapes and we can't know what do we see as circle or rectangle
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>>8311107
thats not the same
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>>8311110
It is, both are stupid fucking questions
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What's wrong with String Theory?
Isn't it just another model that can make predictions, describe phenomena, and be parsimonious at the same time?
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>>8311079
>make predictions
lol
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>>8311079
should i study physics or mathematics????!!!
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>>8311079
unprovable. Although I don't know that much about it but it does seem like it is just conjecture
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What is philosophy more,
than just arranging letters in different ways?
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>>8310952
Cut yourself
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>>8310952
Modern philosophy is just as you described, using semantics to 'prove' something
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>>8310961
Oh.. well thank you, sounds quite lame though to dedicate life around words that humans themselves have created.
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MODS ARE ASLEEP
>Post Sci-Porn
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>>8310837
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Geography is science right
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I know I'm not the first person to have this thought but it's one that I think about every night. It's a thought that I feel a good majority of humans don't have and it goes like this : Life is pretty strange. When you really get down to core of it, we're just these creatures stuck on a rock orbiting a star that's orbiting the center of our galaxy and so on. In a cosmic evolutionary sense, we are the universe experiencing itself. I don't know a lot of 19 year olds who know that the universe is indifferent to their existence and that life is arbitrary. There is no meaning to life and I'm okay with it. Knowing that, I'm gonna pursue my passion. Might as well right? Do any of you share similar thoughts?
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Yes, anon since I was like 13
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>>8310725
yes, we have no free will either, but feel free to pretend that you do, it's probably better that way
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>>8310750
The way I see it is that whether we do or don't it doesn't matter. I subscribe to the notion that everything that ever was and will be is playing accordingly to the very moments of the universe. When it was set into motion. Me making toast or jerking off is just the universe playing itself out. Ha.
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>tfw want to contact professors and ask if I can assist in undergraduate research
>tfw scared they'll give me some work to do and I'll be completely unable to do it and just waste their time
Anyone else know these feels
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>>8310716
Generally (say for chemistry or biology) you'll be supervised by a grad student or post doc.
Professors know better than to expect you to be able to do anything of value, safely, all by yourself.
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>>8310716
Just do it. They know you're only an undergrad and will put you working with honors/phd students.
t. Undergrad research pleb
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What is undergrad research like?
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Can anyone identify what this is?
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It changes colors from blue to yellow, dependant upon the light hitting it.
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Held up to white fluorescent light
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They're minerals Marie, Jesus !
>tfw your department spends 90% of its annual budget on "women in STEM" events
Whats their endgame /sci/?
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>>8310637
Equity of outcome that stems from a deterministic materialist point of view which itself originates in Marxism
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>>8310637
Probably to get women in STEM.
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more stem graduates = lower stem wages