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Archived threads in /sci/ - Science & Math - 235. page
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Why do normies like him so much?

He was mediocre
12 replies and 1 images submitted. Click here to view.
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>>7980809
>normies
>mediocre
You answered your own question
>>
>>7980809

What does it feel like to criticise people who've achieved more than you for being mediocre? And what does that make you?
>>
>>7980820
mediocre comparatively to other scientific pioneers, the way people go on about him would make you think he was a cut above the rest, but he isn't'

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43.4% of U.S. billionaires vs 33.8% of 30-millionaires are in the top 1% of cognitive ability:

https://www.psychologytoday.com/sites/default/files/WaiLincoln_RightTailofWealth.pdf
11 replies and 2 images submitted. Click here to view.
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>>7980792
How does one become a better thinker?
>>
>>7980792

You're saying the majority of billionaires and 30-millionaires are brainlets?
>>
>>7982314

DELETE THIS

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If you walk toward a flat mirror at a speed of 3.2 meters per second, at what speed do you see your image moving toward you?

a. 3.2 meters per second
b. 0.6 meters per second
c. 6.4 meters per second
d. none of the above

According to the answer key, it's C, but I have no idea why. And fucking around in front of a real mirror isn't helping me understand either.
15 replies and 2 images submitted. Click here to view.
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>>7980723
If you walk at 3.2 m/s, your image walks at -3.2 m/s, so relative to you, your image is moving towards you at (3.2 - (-3.2))m/s, or 6.4 m/s.
>>
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GODDAMN RACOON POSTERS GET OFF MUH BOARD
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>>7980744
Ah. I was thinking in absolute terms measuring from the surface of the mirror. Ie the image is walking 3.2 towards the mirror.

Goddamn a lot of physics is about getting into the right frame of reference.

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Can /sci/ help me ?

Is there an easy application that generates vector field maps from Navier-Strokes simulations ? It usually represents directions and velocity with colors.

I'll post a few examples
15 replies and 3 images submitted. Click here to view.
>>
>>
>>7980713
From what navier stokes simulations?
>>
>>7980713
Matplotlib feather.
Are the results of the simulation outputted as a matrix?

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My prof posts things like these everyday for fun. I thought this one was interesting enough to share with you burgers.
12 replies and 1 images submitted. Click here to view.
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>>7980540
>If I rephrase the Monty Hall problem, maybe people will think it's fresh bait!

Sorry, man, you can't just revive stale bait like that. Sure, you'll get bites, but they'll be the same boring nerdfights as usual.
>>
>>7980549
The other one is different because you have already picked one.
>>
>>7980549
I'm sure this thread is gonna get hundreds of replies, just like all the other monty hall threads.
/sci/ has really gone downhill.

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What's the expected length of the union of 100 sets of 500 random integers with range 1 to 1000000?

Arguing about this at work.
25 replies and 2 images submitted. Click here to view.
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>>7980329
[math]E[L]=\sum_il_ip(l_i)[/math]
Work out collisions between the lengths of all sets, then write a little program to do this little teensy sum and you'll have your answer.
>>
>>7980329
Why are you saying union of? The union is just going to be a set of 50000 numbers from that range. Are you meaning length as in how many digits the number is expected to have? In that case, the expectation of the length is just
[math]50000E[L_{one\ number}][/math]
The expected number from the range (1, 1,000,000) is 500000.5. If we're going with integers the digit length is 6.

The answer to your question is then [math]6\cdot 50000=300000[/math]
>>
>>7980347
The collisions are the hard part.

>>7980391
When I'm saying "union of", I mean the definition of the union operation in set theory. To clarify, each set of 500 numbers has no duplicates (it's a set). But there may be duplicates between sets. So when you combine all the sets, the total length will only be 50000 in the rare case that in 50000 trials not one duplicate was generated (the other extreme being each of the 100 sets being identical,...
Comment too long. Click here to view the full text.

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Any medical students here interested in making a skype group?

Leave your names and I'll add you :)
25 replies and 2 images submitted. Click here to view.
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>>7980279
boylover69
>>
Westernwarriorkkk1488
>>
Analbandit666

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If nothing can go faster than the speed of light, what happens if two objects moving the speed of light in opposite directions pass each other? Wouldn't they both be going twice the speed of light relative to each other?
12 replies and 2 images submitted. Click here to view.
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>>7980131
:) yes
>>
>>7980138
Did I just disprove Einstein then?
>>
>>7980131
I just tried this with putting 2 flaslights towards eachother

Can confirm that it didnt go faster OP

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What do you think of McKenna's TimeWave Zero theory?


Also what do you think of McKenna in general? I saw him as generally respectable although a bit biased when pushing some of that stoned ape stuff but this I-ching stuff sounds a bit loony
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Dirty hippie
>>
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Kim is best waifu.
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Long live Kim Waifu.

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My sister says we shouldn't spend money on the space program that could be spent on economics and humanitarian stuff besides satellite-related activities. What are arguments I can use to prove her wrong?
23 replies and 3 images submitted. Click here to view.
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you can't prove her wrong because that's an opinion
>>
tell her that shes a fucking woman
>>
>>7979733
tell her she's fucking retarded and ask what she thinks an economist will do with money.
>>7979763
Opinions can be wrong. That's what being wrong is.
>>7979765
yes do this.

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Can I get help with resistivity of a copper wire

I set everything up exactly like the diagram and used 8 volts running onto the wire and a meter long copper wire. My multimeter measuring volts was placed in the exact same way in the diagram and measured .008 volts? Would this be correct?
13 replies and 1 images submitted. Click here to view.
>>
If you're using copper wire you're gonna have a bad time because it has minuscule resistivity. The setup would only be useful for a constantan wire etc. If you really want to do it with copper you'll need to coil it in some way to get good results.
>>
>>7979739
Thats what i figured. Im trying to prove it has the least resistivity. I also tested aluminum the same way and got .708 volts. Would the numbers im getting be acceptable?
>>
>>7979716
what is your ammeter measuring?

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>be me
>went to uni for Chemistry 10 years ago at 18
>made A's in Gen Chen 1+2 and Gen Bio 1+2, never studied, was always one of those kids who heard something once and grasped it
>dropped out after freshman year
>decided to go back last year
>now study my ass off and struggle to make B's, dropped all classes this semester cause the highest grade I could get was a C
Comment too long. Click here to view the full text.
19 replies and 2 images submitted. Click here to view.
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>>7979583
It's hard to do good in memorization classes once you get past 25
>>
>>7979583
>could I have damaged my brain?
Yeah, drugs can have that effect. They can also help reverse the same effects, but nobody really has the means to study psychedelic rehabilitation. I'd advise you not to experiment on your own, but it probably doesn't make much of a difference now anyway.
>>
>>7979583
I'm sure that when you were younger you were more active physically and mentally, after you gained information you moved on to another idea/topic to look into or understand. Do you try to learn something new or expose yourself as much as you used?

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Why is there such a strong push for artificial intelligence and singularity and such? I really don't get it, do these people want to get cucked by computers?
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>>7979106
Intelligence is literally usefulness

Usefulness is roughly value
>>
>program something once and it does the work for you
>do the work over and over again
lol anti-AI workcucks BTFO
>>
>>7979113
Isnt human laziness going to bits us in the ass when AIs decide they don't need us anymore?

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How to change the color of juice?
Say I want to make tangerine or orange juice white.
12 replies and 2 images submitted. Click here to view.
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>>7979037
You have to modify the biochromes within the orange juice. No idea how to do it chemically, but if you managed to find an inhibitor that could stop the manufacturing of the pigment, and find a way for it to synthesize white pigment, then you could theoretically grow a white orange. Whether it produces white juice is a different story.
>>
>>7979051
A-alright, so far, I have seen I could use titanium dioxide
>>
>>7979051
>white pigment

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I pulled this powerful ceramic magnet out of a microwave magnetron.

While I was prizing it out, it chipped a little and I now have this sliver of a magnet.

When I try to put it back into the hole whence it came, it gets violently repulsed by the main magnet, and I have to turn it backwards to be able to touch the two together. How come? shouldnt it be attracted to the magnet it came from?
17 replies and 2 images submitted. Click here to view.
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>>7979030
>Asking how magnets work
you're just asking to be memed

but then again maybe that's what you wanted all along
>>
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>>7979030
>>7979035
Was getting caught part of your plan?

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