Archived threads in /sci/ - Science & Math - 52. page
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Why does my body signal I'm not thirsty/hungry immediately after I've drank water/eaten food even though I haven't digested it yet?
Is my brain lying to me?
Is it just to quickly inform me that "food in throat when stomach hurt = good" as if I didn't know that already?
First, OP, get an idea of what "hunger" really is.
It's not your cells telling you they need energy
it's just a feeling, your body telling you to eat something, nothing more
with a bit of training you can entirely overcome that feeling but that's another story
it has nothing to do with digestion or chewing food
>>8163179
>inb4 but there is no feeling
>buddha was stupid!
>>8163184
>>buddha was stupid!
is that some dank /sci/ meme?
I'm not here very often
Just watched Varg's newest video about home schooling. Is home schooling or even no school at all still better than if kids attend at regular school? Speaking for myself (German) I can agree that I spent 6 hours the day just sitting in the class and being bored. For several years. I've only learned for the exams and thats it. Now doing my master's course but I don't attend at the lectures and just learn at home instead.
What do you think about that?
Unfortunately homeschooling is illegal in Germany since after WW2.
>>8161960
Nun mein Freund (als Deutscher antworte ich dir...)
I don't think most parents are capable of home-schooling. A lot negative sideeffects will be the consequences. Like, you don't really socialize with your peers, you don't have a counterpart and the most important part - nobody is checking on the quality.
It's okay in University when you know that you won't gain much out of lecture and the learning itself will be on your own part. You attend the lecture to ask questions and maybe...
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>>8161960
Oh, und wieviele Stunden lernst Du so durchschnittlich am Tag zuhause? Wie siehst Du das so im Vergleich als wenn Du die VOrlesung besuchen würdest?
>>8161960
Most of those who home school are idiots who are learning along with their children. Most of them do it for religious reasons (even Catholic schools teach evolution), and the children come out of it weird because of their lack of socialization.
Bicycle accident a month ago, already healed, also had a sartorius strain, what should be the symptoms of muscular fibrosis or calcification.
jesus christ go see a doctor ffs
>>8161920
why create a thread for this?
http://www.medicaljournals.se/acta/content/?doi=10.2340/00015555-0518&html=1
http://www.merckmanuals.com/professional/pulmonary-disorders/mediastinal-and-pleural-disorders/pleural-fibrosis-and-calcification
>>8161920
if repeating digits squeeze a lemon on it
1. Your field
2. How many first author papers does a typical PhD student in your field publish before graduating?
pure mathematics
0-5 not counting thesis at a paper
Health information.
0, we're all associate degree holders
>>8161900
1. Mathematical signal processing.
2. Maybe 3-5 papers for a 4 year PhD and then you need both MSc and BSc to even start it. Not very uncommon those 4 years become 5, 6 or even more.
Never been on this board but have a quick question. What site should I go to if I just want to write a very simple function (I think that's what they're called) and then input values for X to get Y? For example I just want to write 1.5X = Y and it give me the answer for a value of X.
Sorry for being a fucking retard. Pic not related
A calculator?
>>8161897
ARTEEZY WAS ALWAYS SHIT
/d2g/ is full of cancer
All of you are shit.
>>8161897
What are you even trying to say?
/g/ doesn't know shit about tecnology so i'll repost here
Electricfag here
>Solar energy.
We know the hardest thing with enery is how to store it, so since solar output is at it's peak during the day when demand is low and vice versa demand is high during night when no sun is up, why don't they use the exeeding electricity during the day to divide hydrogen and oxygen from water, store hydrogen and burn it back into water during night to produce energy?
Same quantity of oxygen is produced when extracting...
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nitrogen oxides get produced, which are toxic.
That's it? The only reason?
I mean CO sure is toxic + a shitload of other nasty stuff gets produced when burning coal, but they come up with a way for filtering it
Is time the fourth dimension?
No, the fourth dimension is temperature.
No, it's light
No, it's color.
Do insects feel pain?
Discuss.
Biology student here, I think that insects only process pain, withouth "feeling it"; they don't have noxiceptors, but they surely have a sense of self preservation, they can sense the ambient they're in and if it is right or wrong for their living.
Even unicellular organisms can sense the ambient they live in.
>>8161579
you answered your question
>>8161582
I think he just wants to know what other people think
>>8161582
Really?
Oh man, ain't I such a smart guy?
1,5,17,48,122... what is the next number?
who knows
290
Any fucking number you want. Literally any number.
Kill yourself.
So terriforming Mars won't be a thing for quite some time, however it got me thinking about some ways we can adress some of the problems associated with terriforming.
>Microgravity
Not much you can do about this, other than build structures that could take advantage of it. More research needs to be done before I comment on the biological effects it has on lifeforms.
>Atmosphere
There's been a lot of different ideas ranging from nuking the icecaps to transporting air. What do you guys think?...
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It amazes me how many intelligent people talk about going to mars, and hoping to live out their life and die on mars.
Why not terraform the Sahara Desert? Or the North Pole? Or the Marianas Trench (or whatever it's called). All of those would be easier and would accomplish something.
Elon Musk should just shut the fuck up and load a winnebago with whatever he likes, and drive out into the Sahara until he runs out of gas. At that point, the only assistance would be some other suicidal freak in another winnebago under the same rules. No rescue operations permitted,...
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>>8161381
>Why climb that mountain when I can just climb that hill over there?
>Why do people want to do things I don't want to do?
>People should just do what I think they should do
>People shouldn't spread out among the stars because there's plenty of places here on Earth to live
>terriforming and colonizing an alien planet is pointless, but...
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>>8161392
Thought it would mess with the ecosystem if animals already live in those areas, I agree it would be better to just colonize and teraform every unfavorable biome in preparation for terraforming planets
If density isn't finite, is there something like infinite velocity?
Why is light the fastest thing possible if it's finite?
>>8161263
Because Norman Wildberger is right, and infinity doesn't exist.
>>8161263
https://en.wikipedia.org/wiki/Bekenstein_bound
Density is finite.
Light is the fastest thing possible because it has no mass.
GO back 2 Sckoll
>>8161282
How is density finite?
What about Black Holes?
Why is an empty set considered a set? How is it justifiable? If a set is a collection of distinct objects, how can you claim it's a set when there's nothing distinct its a collection of?
>>8161209
A set is like a box. An empty set is just an empty box.
It's the collection of no distinct object(s).
Just imagine two baskets. One is empty, the other one has the element {Calculator}.
In one basket is nothing, while the other one has a Calcalator. The empty set is a collection of no objects.
More {} = A \ A.
What's left if you take everything out what you have in it.
>>8161213
>>8161215
But the box is an object whose essence can't be identical to set's. The box won't stop being a box if it's empty because it doesn't mean for a box to be box only if it contains something. The definition of set is supposedly for it to be a collection of objects. Shouldn't it be meaningful to call something a set only when there's something it's a collection of?
Why distant objects looks smaller? Can you answer that /sci/?
>>8161197
this is one of the unsolved problems in physics
>>8161197
why do we have 3d vision when we only have 2d images
>>8161197
>He doesn't have orthographic vision
lol git gud scrub.
![317F03CE00000578-3461251-image-a-40_1456275582399[1].jpg](https://i.imgur.com/5LiT4P8.jpg "317F03CE00000578-3461251-image-a-40_1456275582399[1].jpg")
Any engineers in here?
What software do you use for robotics simulations?
>>8161189
ROS
matlab
simulink
Can neutrons be isolated and accumulated? How would a glass full of neutrons look like?
yup, neutron stars are huge spheres made of neutrons.
neutron is a meme
The answer is yes, though you should be reminded that neutrons decay and have a half-life of about 11 minutes.
It's possible to slow neutrons down from some source (usually produced by an accelerator) and trap them magnetically. There's no way to make them as dense as you're imagining though. A cold neutron gas that lasts less than an hour is the absolute best we can do.
