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Archived threads in /sci/ - Science & Math - 1255. page

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Why the fuck do they add sodium to bottled water?
35 posts and 2 images submitted.
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>>8457347
idk, but I'm not convinced the pic supports the idea that it was added

one would have to know how and where the water was collected and treated prior to bottling, and to have knowledge of the treatment process
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>>8457347

Why the fuck does op not know how to google?

>“If you had pure water by itself, it doesn’t have any taste,” says Bob Mahler, Soil Science and Water Quality professor at the University of Idaho. “So companies that sell bottled water will put in calcium, magnesium or maybe a little bit of salt.”
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>>8457347
to make you drink more

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What's a good brainfood for pure mathematics?
33 posts and 5 images submitted.
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>>8456572
chocolate and monster energy
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>>8456572
Whiskey
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>>8456572
Amphetamines

China's 'Artificial Sun' achieves fusion breakthrough
http://en.people.cn/n3/2016/1103/c90000-9136786.html

West BTFO
18 posts and 1 images submitted.
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>>8455795
Great.

Can they stop building two fucking coal plants every single week now?
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>>8455795

But can it power a single 60 watt light bulb?
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>>8455841
>But can it power a single 60 watt light bulb?
Doesn't sound like it.

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Why do you actually do math? What do you hope to gain from it?

>It's fun
If it's so fun why don't you do it on your free time

>I can get paid for it
>
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Everyone knows that triple integrals make women wet. You wouldn't even believe how much pussy I've gotten with my math skills, son.
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because i want everyone to see what a GENIUS i am
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Cause its fun and difficult enough that I can spend all my life doing it without being bored.

I'll probably be getting a dog to make up for my lack of relationships in my life.

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>know answer to question lecturer asks
>debate with myself it may be wrong
>no one else answers question
>silence.gif
>lecturer goes through answer assuming we are brainlets
>my answer was right
>tfw could have increased respect from lecturer
>mfw brainlets are not struck in awe of my intelligence

Who else does not bother saying the answer they know is right?
42 posts and 9 images submitted.
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>>8454929
you, me and I reckon a lot of other autists here. This is what happens when you're a socially awkward fuck that's scared to take a chance.
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I always answer because the faster you answer the faster the lecture will go on
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Happened to me thousands of times.It's frustrating as fuck.

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Link in question: (https://www.youtube.com/watch?v=WIyTZDHuarQ).

My favourite extract from the comments:
>George Beedle: Is it possible that electrons are interacting with the mesh of space-time in the same way as these droplets interact with the surface of the oil?.
>Veritasium: That's the thinking - maybe zero point fields are making the particles bounce around.
71 posts and 5 images submitted.
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>>8454824
Becuz it is weird lol.
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>>8454824
No one but brainlets use the words *quantum mechanics*.
The theory itself is disgusting and physics as a whole repels me.
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>>8454839

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What are your favorite math/sci quotes?
79 posts and 18 images submitted.
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>>8454409
Dance as if no one was watching

Sing as if no one is listening

Work on complex mathematics as if you had no friends

- alexander grothendieck
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>>8454412
One absolute /sci/ quote right here

Anyway, this thread will have potential, looking for it
And sorry i cannot contribute

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"Artificial" intelligence or singularity or all the good memes will not be acheived with computer "science".

Biology with genetic engineering and neurology will be able to create intelligent creatures and steal the geek's spotlight
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There is really no reason to think otherwise, as we aren't there yet.
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>>8453420

That's retarded. There is nothing special about meat that makes it a better substrate for AI.
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>>8453420

im sure even if that were to happen it would still rely heavily on computer science and math. neuroscience is becoming increasingly involved with mathematical modelling and machine learning and stuff like that

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If people keep having kids inside their own racial demographic continuously, humanity will eventually split into a bunch of different species right? How long would it take from today if that were to take place?
8 posts and 1 images submitted.
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>>8451969
And educated guess would say breed till you can't interbreed
>>
https://www.youtube.com/watch?v=y8Lw-KWD31k


Thank east africans your existence.
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>>8452177
That video, sir dubs, is 47 minutes long
a more condensed and sensical reply would be appreciated

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Why is Lactose Intolerance the default position in mammals*?

Milk is the ONLY food source that exists PURELY to be a food source. Why then would it be advantageous to develop a gene that PREVENTS you from having that food source? What good is that?

Clearly in modern times, its advantageous to be able to consume milk, so why did LI evolve in the first place?

*Ability to digest lactose only evolved ~ 5-10 000 years ago in Eurasia (during agricultural era). Most humans on the planet are lactose intolerant.
18 posts and 1 images submitted.
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It's probably to separate the offspring from their mother. Animals always go for the easiest food source available, so that gene prevents offspring from becoming complete parasites to their mother.
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Everyone has the gene that codes for lactase (the enzyme that digest lactose). Everyone as a baby can drink milk from mother.

The reason why, is that humans were hunters back then. Why would you waste aminoacids and other nutritients to produce enzymes you had no use for? People were not drinking milk back then because there were no milk or domestic animals! Bigger civilizations saw it as savage to drink milk, it was viewn like drinking the urine from an animal.

The trait of not having a reduced production of lactase started in the british islands and eurasia actually. The non-romans called brits had no food and were the only ones desperate and savage enough to drink milk.
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>>8458789
>Milk is the ONLY food source that exists PURELY to be a food source.
There are other reasons to use milk, but sure it's main reason is for food.

>Why then would it be advantageous to develop a gene
I don't think you understand how gene mutations and natural selection works, it's not always advantageous.

You can buy lactose-free milk, it still has all the proteins except lactose is broken down to galactose and glucose.

No one decided to just get lactose intolerant.

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What is the most likely Grand Unified Theory and what the hell is it about?
13 posts and 1 images submitted.
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[eqn] \mathrm{SU}(3) \times \mathrm{SU}(2) \times \mathrm{U}(1) [/eqn]
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>>8458315
GUT is a specific term. Do you mean it that way?
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>>8458323
That just QCD.

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So recently it seems there's been a rise in the mention of certain fad/meme diets like keto, paleo, and pure veganism. Are macros really that important? Is it mainly calories? Are fats bad for you? Are there any diets that /sci/ can endorse as legitimately being the most healthful and preventative with regard to heart disease, hypertension, diabetes, and cancer? Should an individual eat at a constant deficit?
13 posts and 2 images submitted.
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>>8458281
Read the /fit/ sticky. They really know their health diets.
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cba posting sources but ill speak from both experience and being read up on this subject.

no carbs/mainly fat - really good for losing body fat fast, without being insanely hard to go through. Trans fats and such are unhealthy.

pure vegan - you'll need b12 supplements otherwise your nervous system will get damaged. seems to work pretty good

Getting all macros isnt necessary, but sure helps you with life quality overall. (exercise is rly important for that)

I think the best way to go if you wanna be all healthy is not to eat sugars, not to binge on carbs and fasting once every month or so. And dont forget exercising.
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Macros aren't everything.

If your protein source doesn't contain a full range of amino acids, then it doesn't matter how much protein you eat.

If you are eating fats with a certain chain length or certain types of atomic bonds between the carbons, than it vastly changes how your body will respond to them.

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Is actuarial science a meme?
I passed the first exam with ease.
8 posts and 1 images submitted.
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I was an actuarial science major, and I changed to puremath because act.sci. seemed too soul crushing.
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>>8458172
Is math the highest paying major worldwide, anon?
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>>8458169
Way to much fucking studying.

I have a shit teacher at a local community college who can't explain this or even provide reference material for me to better understand it.

I come within .50 everytime I answer this but I'm still marked wrong.

Could someone out there help me solve this or provide reference material? My textbook covers this is one short paragraph.

(I've sent this to WSR all I recieved was first page google hits)
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take a ruler. scale the image until the length of the 9m/s vector becomes 9cm/inches/marks whatever your want.
then measure the resultant. thats it. 7 and 13
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>>8458081
>use a ruler

What the FUCK. Drop out. Now, while you still can. What a fucking garbage school.
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>>8458102
Explain to me why this is bad, please.

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I understand that theoretically light is the fastest thing in the universe. But it takes light about 3 seconds to get to the moon and back but in that time I can blink my eyes about 6 times so practically my eyelids are faster than light.

Pic unrelated.
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Your eyelids go to the moon when you blink them?
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>>8458043
Better bait
>>
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haha very smart friend
you almost got me there for a second

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