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Archived threads in /sci/ - Science & Math - 43. page

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Daily Reminder: Aubry de Grey is a retarded shithead and isn't even bothering with immortality anymore.

>Muh Alzheimers
>Muh Mitochondria
>What's a stem cell?

You literally had ONE fucking job, you stupid asshole.
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>>9158368
>Implying he didn't find it already and decided to fake his own death.
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>>9158368
Kek, aubrey is going to win and you'll suck his immortal dick for a small dose of his SENS therapies
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>>9158706
Out of curiousity what is his star sign?

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>come home from uni with my bike
>always try my hardest to arrive as fast as possible to train my body
>clock always a little more than 8 minutes
>come home listening to eurobeat
>so much energy and it's so fun to force my legs to do their hardest even when I can't increase the speed anymore
>arrive about 5 minutes and 10 seconds after leaving the uni
>literally can't walk properly
>legs hurt so much I wait in pain on my bed for a minute before being able to write this shitty blog post
What is the science behind this?
Also, I'm feeling a weird taste on my mouth.
21 posts and 2 images submitted.
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How far away from your uni is your house?
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>>9158131
I think OP died of exhaustion.
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>>9158024

During physical exercise, it is believed that part of your muscle tissue gets damaged, and grows stronger if you give it enough rest. This is the fundamentals of muscle growth.

The weird tase in your mouth is most likely semen.

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.
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>>9157122
K
>>
>>9157122
K
>>
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>>9157122
o k

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Does the "soul" really exist?
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>>9156197
Not in whoever took that picture, fucking disgusting
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>>9156198
What's wrong with m- i mean that persons plate
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>>9156198
bruh. That's clearly a euro with olive and pepper. You have absolutely no taste.

How do you become a professor and is it worth it?
77 posts and 6 images submitted.
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>>9155240
>not obese or skinnyfat
>clothes fit
>hair taken care of

fake
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>>9155240
You get PhD, usually do a postdoc, then apply.

It's not worth it at all. The only benefit is that once you have tenure, you're your own boss for the rest of your career.
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>>9155245
>It's not worth it at all.
What if teaching and research seem more appealing than any other options you have?

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Book on puberty of boys catches flack for stating that girls grow breasts to feed babies and to look grownup and attractive to boys.

I am pretty sure that all female mammals above monotremes do, in fact, grow breasts to feed babies, and I didn't think it was at all controversial that secondary sexual characteristics (including female breasts in humans) help attract on sex to the other.

So what the fuck is everybody losing their shit over?

https://www.nytimes.com/2017/09/06/books/puberty-book-pulped-growing-up-for-boys.html
55 posts and 10 images submitted.
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Why are you surprised that a gaggle of science denying progs lose their shit over any little thing? Don't you know how hysterical the times we're living in are? Hardly anyone cares about facts. Nobody cares about arguments. "I don't like this book so you have to burn it!" passes for criticism nowadays.
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>>9153132
>So what the fuck is everybody losing their shit over?

Have you been under a rock for the past 3 years? Postmodern Anarco-Communists have taken over liberal arts academia, politics, and the media.
>>
It's transphobic and sexist. It's 2017 you immature piss babies! Grow UP.

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How can you actually call yourself science savy, see these hurricanes, and still deny climate change? How ignorant can you be? 4chan please tell me people like this don't exist...

Humans are the problem. this is a wakeup call.
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>>9151190
Fuck you Roths. This is all a narrative. A part of your master plan. Fuck your bullshit. I want out of this machine.

THIS IS FAKE

THIS IS FAKE

OUR LIVES ARE ALL FAKE
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>>9151205
It's not fake?

This is echoing the scientific community. Science is fact, your opinion can't change that. Sorry!
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This is environmental racism. This is Trumps America.

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Expanding Earth
Is ancient megaflora and megafauna (relatively massive plants, animals, dinosuars, insects etc) evidence that the planet Earth was previously smaller than today?
http://www.xearththeory.com/dinosaurs/
@15:00
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the Sun does not follow a flat orbit around the galaxy. Instead, its motion wobbles above and below the galactic plane, crossing the galactic plane every 35 million years. This isn’t unusual, as lots of stars follow similar paths, but it has led some to speculate that perhaps this periodicity could explain periodic mass extinctions in the geologic record.
https://briankoberlein.com/2014/03/10/dark-matter-dinosaurs/
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>>9161219
probably more to do with oxygen & carbon dioxide levels?
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>>9161239
Have read this,.. Blue Whale? Lives in water.

Also Oxygen levels in water don't change H2o. Megladon?

Also Thnx 4 reply
1 meter Dragonfly's?

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Intuition tells me, the axiom of choice if obviously true.
Intuition tells me, obviously, the reals can not be well-ordered.
This feels like god made a mistake, an error in the source code of the universe. How have you dealt with this brainfuck?
6 posts and 1 images submitted.
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>>9161047
axioms aren't true or false, they're just things you take for granted
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>>9161047
I'm still not sure how to deal with the brainfuck that is your grammar.
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>>9161047
>axiom of choice if obviously true
nothing about infinite sets is "obviously" anything.

also in order to resolve your brainfuckery, just look at a proof of the equivalency of these two statements of the AC.

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[math]
\int_{}^{} ln(sin(x)) (0)

\int_{}^{} ln( Im(\e^{ix}) ) (1)

Im( \int_{}^{} ln(\e^{ix}) (2)

Im( \int_{}^{} i·x) (3)

\x^{2} (4)

[/math]

Is going from (1) to (2) allowed? Like taking the Im() out of ln and integral. l was given this integral but apparently my result is wrong. Thanks in advance. Pic unrelated
6 posts and 1 images submitted.
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>>9160723
rip sorry about the espacing l wanted to put a new line for each (n)
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>>9160727
newline is a
\\
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>>9160723
[eqn] e^{i x} = \cos (x) + i \sin (x) \\ \implies \sin (x) = Im \left ( e^{ix{ [/eqn]Basically it's just taking the imaginary part of the complex number.

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Taking first semester Quantum Mechanics and our first assignment is some pretty basic stuff related to the braket notation.

I'm realizing I was never very fluent in my complex conjugates and how to deal with absolute values (yikes!).


I'm wondering if there are some good examples anywhere online regarding normalization of a wave state? Or even somewhere I can check my work to make sure I'm correct.

For example, here is one of my problems:

[math]\mid \psi \rangle = 3\mid + \rangle - e^{i \pi /3} | - \rangle [/math]

[math]1=\langle \psi \mid \psi \rangle[/math]

[math]1= C^* ( 3\langle+| + e^{i\pi/3} \langle-|)C(3\langle+| - e^{i\pi/3} \langle-|)[/math]
And in previous problems I end up with |C|^2= -1/7, which doesn't make sense.
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>>9160391
Bras and kets are complex conjugates of each other, so just take the complex conjugate of the ket then slam them together and solve.
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>>9160399
I know. But what am I doing wrong here? How can the absolute value of C^2 be negative??
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>>9160410
Your bra has picked up a minus on the 4, but 4 isn't complex. [eqn] | \psi \rangle = 3 | + \rangle + 4 | - \rangle \\ \implies \langle \psi | = 3 \langle + | + 4 \langle - | [/eqn]

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Can anyone give me hints on how to go math-monk mode? How to increase concentration (without long term negative consequences), good reading material (especially on algorithms and TCS), etc. Also: Are there things not to do, because they make you "stupid" ?
17 posts and 1 images submitted.
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>>9160179
Meditation. Why do you think those monks have world renowned levels of focus and discipline? Its because they meditate on the subject for hundreds of hours. /sci/ for the most part is far too lazy to achieve results from meditation, or even figure out why their "hypoxia" claims are absolutely retarded.
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>>9160179
>especially on algorithms and TCS

>>>/g/tfo
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>>9160269
There are also numeruous studies stating that mediation improves the ability to focus deeply.

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are there any good satellite-streams showing the earth in real time?

Or HD weather streams/simulations. I want to observe irma assault florida.
12 posts and 1 images submitted.
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>>9160090
good idea OP. i want to see this too.
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>>9160115
I tried using terms, e.g "irma forecast model" but mostly it got me to sites like NASA and NOAS: https://www.nasa.gov/feature/goddard/2017/irma-atlantic-ocean
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>>9160090
windy.com is pretty neat

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Where is science heading? Specifically computer science.

How would one "future proof" himself in this field?
I feel like computer science changes by the day. Same must be in other fields, right? An engineer can't expect his college knowledge be 100% relevant or most effective 15-20 years after graduation.
9 posts and 1 images submitted.
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I am in CS grad school atm and I don't see how the field changes by day, quite the opposite. Shit that Turing figured out is still true today. Just don't make the mistake and go into webdev (I feel slightly dirty to name this in the same context as computer science, there are smart people doing it tho too)
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>>9160075
Maybe I'm just over thinking it. I feel like programming is always an option but it's not the only option.
Take cybersecurity for example, I don't know much about it but it feels like you have to be up to date all the time
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>>9160068
You can't future proof yourself for computer science. Computer science knowledge has a half-life of years at best. In dome parts of CS the knowledge half life is down to weeks.

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Let [math] x = 2 \pi [/math]
Then:

[math]e^{2 \pi i} = \cos 2 \pi + \sin 2 \pi i \\ e^{2 \pi i} = 1[/math]

Now take the natural logarithm on both sides, that leaves you with:

[math] 2 \pi i = 0 \\ \pi i = 0 [/math]

And since pi is different than zero:

[math] i = 0 [/math]

Is that true /sci/? What am I doing wrong?
18 posts and 1 images submitted.
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>>9159987
You're discounting the imaginary value.
cos(2*pi)+i*sin(2*pi) =/= 1.
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>>9159987
Oh man haha great thread. I mean, obviously no complex analysis textbook has a chapter on the complex logarithm and how it actually works. Impossible. It just isn't known! AT ALL! Please post your address so that we can mail you the nobel prize and the fields medal because you are actually the first human being in the universe to realize that the complex logarithm doesn't work like the real logarithm WOW. You must feel real good about yourself :)
>>
https://en.wikipedia.org/wiki/Complex_logarithm#Problems_with_inverting_the_complex_exponential_function

>>9160004
Yes it does

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