Archived threads in /sci/ - Science & Math - 307. page
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Hey /sci/
Weird thing happened today. My pic related is left over boiled chicken. If you look closely, you'll see two black dots.
I was microwaving it, and out of no where I blue spark lit up the microwave. It looked like a small arc traveling across the chicken pieces.
How could this have happened I don't understand how microwaves work to begin with
>>7948513
Microwaves cause molecules with dipoles to vibrate. Microwave-safe is just a broad term for saying "this shit wont be resonated by microwaves therefore not heated directly by microwaves"
>>7948523
dipole moment** fug
you still understand
>>7948523
So what about that could make my chicken have an arc go through it? Is it common for microwaved food to suddenly shoot a bolt out?
Ok so I'm kind of confused. Light travels at 299,792 kps regardless of the relative speed of the observer, whether it be 10kps, 1,000kps or even standing still. Light is not slowed by gravity, distance or electromagnetism. It can be diverted, but will not change the speed of light. So why doesn't light pass through opaque solid objects like photons do? (Are photons light particles?) light reflects off of surfaces and redirects to your eyes so that you can see. Why, then, does light diminish over distances if it isn't slowing down? And why isn't light from...
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>>7948467
tell us in what model you choose to describe light.
so far you seem to mix various concepts form various models and you have no idea what you talk about.
Go back to high school.
>>7948467
>And why isn't light from a close source blindingly bright?
Your question rests on a fallacy. If you stick your eye right next to even a common light bulb, it will be so bright that your body will instinctively want to close its eyes.
Will VR be the tipping point for software education over classroom/lecture hall education?
Take 10,000 teachers of a subject, select the best 10, have them create a VR course. Augment the lecture with VR examples and visuals.
How can disgusting naturalists then argue it's not better than real human interactions?
Also society could save a lot of money not having to pay for teachers.
>>7948114
It's not. Absolutely not. We already have top-notch MOOCs and great archives from top uni courses. This does NOT replace human interaction, because the main thing you get from uni is not the content, but the ideas and direction.
>>7948114
>Radio will revolutionize education! People will be able to listen to lectures from home!
>TV will revolutionize education! People will be able to watch lectures from home!
>Internet will revolutionize education! People will be able to watch lectures from home!
>be in class
>everyone has their varmets on
>listening to the lecture like the sheep they are
>take off helmet
>check out the tits on the girl next to me for the whole period
![ea907349ac05ef2ef22b306cb975e8aa[1].jpg](https://i.imgur.com/FB6m2R8.jpg "ea907349ac05ef2ef22b306cb975e8aa[1].jpg")
How do you take notes?
I'm in third year EEng lectures where the profs use like, 70% lecture slides, but the 30% is shit they say that you won't know off just the slides, and examples on the board, and little hints and notes that you should know.
Clearly I should be focusing on the 30% and listening, but not copying down the 70% but what's the ideal way to do that? I've tried printing out the slides and writing on them but desu that really doesn't work for me, I've always ran out of room.
I have like, pencil, and black pen,...
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>>7948023
Hi, 2nd year Pre-med fag here. I recommend asking your professor permission to record the lectures. That way you can take notes from the slides and examples in class, and in between class transcribe the information that wasn't included from the literature. If s/he doesn't allow you to record, I would take notes of the "30%", examples, etc., then print out the slides after class and read them over, adding important details from those to the notes.
Personally, I use black ink for regular note taking, blue ink for examples/tips, and red ink for corrections. Never tried the Cornell system so I can't really help with that.
My notes go as:
1) Name, Class, Date
2) Chapter Title
A) Section Title
i) Regular notes.
ii) Examples
iii) Additional information that could be useful.
B) Section Title
i) Regular notes.
ii) Examples
iii) Additional info
Each new chapter gets a fresh page. Printable tables, graphs, notes, etc. get labeled with the chapter no. and section no., and are placed at the end of that corresponding chapter.
It's incredibly simplistic, yes, but sometimes simplicity saves tons of time.
On the subject of highlighters, I don't particularly care for them unless I'm using them in a textbook, I find highlighters to make pen ink and graphite to smudge.
>>7948086
I have a professor who, in her slides, has a little symbol of a blackboard at certain parts indicating these are done strictly in class and nowhere else. Can't really record those, but I could ask for that too, maybe.
Your notes structure, is that for rewriting/revision, rather than lecture notes? My main struggle right now is perfecting by ability to take notes at lectures. Lately I've just been randomly getting depressed mid-lecture for various reasons, often because I get behind in what I write...
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>>7948125
Those notes look fucking useless to me.
If you separate a solid from a liquid using distillation, would the amount of solid left over be exactly how much solid went into the mixture initially? It would probably depend on what the mixture actually is. For example, if it were perfectly dissolved sugar-water, would there be exactly as much sugar left after distillation as went in? What about coffee? If you distilled coffee, you wouldn't be able to tell exactly how much coffee grounds were used in making the coffee, could you? Coffee is made up of molecules drawn out of the grounds, so there would be a little bit...
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>If you separate a solid from a liquid using distillation
>solid from a liquid
>distillation
>>7948020
look up how instant coffee is made OP, get ya mind blown
roughly
What's the scientific reason why you shouldn't kill yourself right now?
> hard mode - no evolutionary psych bs
who would fuck your mother if i did that?
>>7947965
>what's the scientific reason why you shouldn't kill yourself
Well if you're taking evolutionary psychology, or psychology in general, out of the mix, I suppose there isn't one.
You could make a point about the biological drive to survive and reproduce, but then you're getting into purpose - putting a human meaning/concept behind an inherent biological function. So that's kind of a no go.
>>7947971
i still would
Where do black holes get all their mass? When a star fails, explodes, collapses in on itself and creates a black hole, wouldn't it have the same amount of mass as it had before? If not even a little less after an explosion?
And if the mass is the same, how did the star shine before with enough mass/gravity to trap light from escaping?
>>7947781
Yes they have the mass of the original star + whatever they draw in.
It has more to do with the mass being concentrated in an infinitely small area than it does with the amount.
You can make a black hole from any mass if you compress it small enough.
>>7947789
Its not even infinitely small. A black hole with the mass of earth would have to be about the size of a human head.
>>7947781
As for the question why the star is able to shine: only if you pass the critical ratio of mass to volume your object gets a schwartzschild, which radius is the distance from which nothing can escape the hole. Since stars dont have one the photons are able to leave it and travel into space.
Also if your question is how it can be...
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>>7947840
the event horizon's radius would be around the size of ping pong ball, or something.
The mass itself is at an infinitely small point, the singularity. The space we call the 'black hole' is just where spacetime is distorted to the point that no information can escape, aka event horizon
>mfw I learn next year's material over the summer and start the year already knowing everything
Get on my level faggots
>mfw denied transfer to the school I was aiming for and considering od
>mfw took 17 credit hours last semester and trashed my gpa with straight B's
Might as well just end it.
way to waste your time
>>7947799
Not really. Simply means less studying during semesters and better grades as I cover the material again
If natural selection is true, why do hot females want to fuck guys with male pattern baldness? Isn't looking old (and therefore weaker) and having ruined ugly hair an undesirable trait?
Checkmate, Darwin.
>>7947687
Because bald males are rated as more masculine and dominant. Masculine and dominant mem BTFO all the other males in the tribe.
bald heads look like penice which attracts women. this is my expert opinion
>>7947692
So Ungth was an alpha leader who lost his hair banged all the cavebitches, and ever since then women have associated baldness with power and it became encoded in their behavior?
Is maths the better physics?
Can the entirety of physics be explained through mathematics?
fuck this guy and his dumb shit face
physics is basically using math to describe the world
>empirical science
I don't know m8
V = virgin N= non virgin
where two virgins get together and trade virginities, they are both still virgins
V + V = -V +V -V +V =2V
but when a non virgin and a virgin get together
the non virgin takes the virginity
V + N = -V +V = 1V
and two non virgins
N + N = 0
>>7947330
>-V+V = 1V
k
N < V
N=0 V=1
V V = V V = 2
V N = N V = 1
N N = N N = 0
Virgins swap virginity with other virgins and are still virgins because of the virginity they took less the virginity they gave.
Non Virgins take virginity from virgins making them non virgins, and become virgins fro the virginity they took.
Virgin - Virgin couples are perpetual virgin
Virgin - Non Virgin couples are part-time virgins passing the virginity back and forth.
Non virgin - Non virgins couples are non virgin unless one cheats with a virgin.
Hey /sci/, what's the science behind manufacturing/processing hemp? Is it plausible that it could replace oil in certain sections of industry for product manufacturing?
I'm trying to find numbers and date on what it takes but all I can ever find for links is crap like collective evolution.
>>7947255
dude weed lmao
>>7947470
Ayy lmao
>>7947255
420blzitfgt
ofc hemp would be able to replace many other plants because of its utility but that's why it was banned in the first place :/
it says here that for your engineering thesis you redesigned a 10mm screw so that it was 9.5mm. care to elaborate on your methodology?
10mm didnt fit through my dickhole
I designed a 10 mm screw in Autodesk and then resized it so the outer edge diameter was 9.5 mm.
>>7947220
how does a starting salary of 300k/year starting sound?
At the end of the video, they say that the other races just stopped existing, the Neanderthal and the Denisova race. They continue with: "We don't know what happened. They just stopped existing."
My theory? Race war. The earliest race war ever, wiping them out, one by one on a massive scale. Better weapons and immune systems included. Am I delusional?
https://www.youtube.com/watch?v=co62imB4Xvk
such citations
so proof
wow
>>7947045
There are no existing evidence, so it's just a theory of course. The best theory ever.
>>7947049
Anything beyond 50 years ago is impossible to prove and meaningless as evidence.
Can you go insane from trying to solve a hard problem with no luck?
yeah sure whatever
>>7946950
i'm him
>>7946948
There's one mathematician, whom I forget the name of, who killed himself after being driven mad whilst working on a problem involving infinity. Pre' cool story.
