/sci/ - Science & Math

[Anonymous No.4456420]

It's nighttime, it's calm, it's beautiful, and we're still alive. So how about one of these?

ITT: Humbling scientific (or mathematical) facts/trivia that drop your jaw, make you hard, blow your mind, etc.

[Anonymous No.4456428]

No can do brother. I have to go to bed.

[Anonymous No.4456433]

Man must walk the stars or die.

[Anonymous No.4456437]

There are more stars in this galaxy then there are grains of sand on every beach on Earth. There are as many stars in the observable universe as grains of sand on the entire planet. The universe is known to be larger than the observable universe.

[Anonymous No.4456436]

Something I've always wondered about these types of pictures: do they correct for the light delay? in other words, do they plot the positions of all these galaxies and clusters according to where they think they are in real time? or is it just based off whatever light we receive?

[Anonymous No.4456440]

>>4456436
I'll give you a hint, it isn't a simulation.

[Anonymous No.4456451]

cool atom stuff

[Anonymous No.4456458]

gold atoms

[Anonymous No.4456463]

one galaxy in front of another

[Anonymous No.4456467]

[Anonymous No.4456471]

>>4456437
I am pretty sure that is not true.

[Anonymous No.4456474]

[Anonymous No.4456476]

[Anonymous No.4456478]

Here's something that you can only witness to truly understand.

Go to red rock canyon, nevada. Everything you see all around you, plus x thousand feet upward was all water. you are standing at what was once the ocean floor


THAT will blow your fucking mind

[Anonymous No.4456486]

>>4456436
This image is so fucking stupid.
No shit, the universe and our neurons follow the same laws of physics and make a predictable structure.

[theta !vacuaB.oEw No.4456489]

with math? <span class="math">E_{8}[/spoiler] is too gorgeous.

with physics? the conjure that einsteinian gravity may be the square of yang-mills theory at the level of tree amplitudes is pretty fascinating. AdS/CFT in second place.

any branch of science? the fact that organisms evolved roughly three billion years ago to produce oxygen, and thereafter others evolved to thrive off of it with even higher metabolic function.

[Anonymous No.4456491]

>>4456486
In fact theres an entire mathematical practice to predicting said structure. Self-similarity and fractal geometry.

[TheOldFag !!ddNqgd/ihEj No.4456493]

>>4456478
FUCKING ALIENS STEALING MA WATER

[Anonymous No.4456500]

l suppose it's trivial, but I always like thinking about it,

aside from helium, the 3 most abundant elements in our body are the three most common elements in the milky way.

l know it's all understood biology, just super generalized, but we're just matter miraculously together making up this machine in a constant domino affect, this constant accident of joined matter forcing itself forward, and one day having thoughts, and speculating the universe around it, like wtf?

just a bit a hydrogen and oxygen typin away on some plastics corresponding to photons and their difference in wavelengths

l know, super moronic generalized pseudo-science, but it's fun to think about it that way, the more you get lost in that bs train of thought the less your existence makes sense.

[Anonymous No.4456508]

>>4456471
correct, there are way more stars in the universe. Ever heard of the deep field of hubble ? Just look at this, you'll understand how big the universe is.

We are nothing.

[Anonymous No.4456518]

>>4456508
l think he's talking about the milkyway galaxy bit, there may be more than a few hundred billion grains on all the beaches of earth,

[Anonymous No.4456529]

Pic related.
It makes the universe go.

[Anonymous No.4456535]

<span class="math"> \Gamma (z) = (z - 1)! = \int_0^{\infty} e^{-t}t^{z - 1}dt [/spoiler]

[Anonymous No.4456543]

>>4456436
the dark matter simulations correspond with observations from the sloan digital sky survey quite nicely

https://vimeo.com/23221987

https://vimeo.com/23221987

[Anonymous No.4456547]

>>4456451

[Anonymous No.4456550]

i^i is a real valued number.

[Anonymous No.4456572]

>>4456550

What is it between?

[Anonymous No.4456575]

Every grain of sand you see here came out of a fish's ass.

[Anonymous No.4456584]

>>4456572

0 and 1. Would you like to know how to prove it? It's straightforward if you have the right tool.

[Anonymous No.4456591]

>>4456575

[Someone !1LTek3FWf. No.4456595]

>>4456575
shitstorm.

[Anonymous No.4456601]

>>4456584

Absolutely. I love recreational math proofs.

[Anonymous No.4456608]

>>4456584

Please tell us how. I am excited now.

[Anonymous No.4456610]

>>4456601

A hint then. Use Euler's Formula.

[Anonymous No.4456614]

<div class="math">\sum_{i=0}^n i^3 = \left[\sum_{i=0}^n i\right]^2[/eqn</div>

[Anonymous No.4456636]

The golden dart frog, which can easily fit inside the palm of your hand, can kill you effortlessly. How? It's skin is so poisonous that touching it will kill you. Knowing how venomous it's skin is (and known for being the smartest frog in the world), it openly traverses the Rain forests of South America knowing that's it's nearly invincible.

Another great biology fact:
http://www.youtube.com/watch?v=PmDTtkZlMwM

[Anonymous No.4456646]

>>4456601

L = i^i
ln(L) = i * ln(i)
ln(L) = i * ln(0 + i * 1)
ln(L) = i * ln(cos(pi/2) + i * sin(pi/2))
ln(L) = i * ln(e^((pi/2) * i)
ln(L) = i * (pi/2) * i * ln(e)
ln(L) = i^2 * (pi/2) * 1
ln(L) = -pi/2
L = e^(-pi/2)
L = L
i^i = e^(-pi/2)

[Anonymous No.4456655]

>>4456636
>Fuck you imma dart frog

>haters gonna hate

You know you've seen too much 4chan for a night when these two thoughts are the first that pop into your head.

[Anonymous No.4456668]

>>4456646

YOU JUST MADE MY NIGHT GOOD SIR

[Anonymous No.4456678]

>>4456636
> it openly traverses the Rain forests of South America knowing that's it's nearly invincible.

Until I kick it 20 feet with my size 11 boot

Being poisonous is not all it's cracked up to be.

I don't know how it works out there, but I, knowing how poisonous a black widow is and that it can catch me off guard or I might intrude on its nest accidentally and get bitten, will kill them on site.

It sucks being a black widow/brown recluse when I'm around. I will pursue them relentlessly, moving furniture and anything in my way to exterminate them with extreme prejudice, be it bug spray, my foot, or even fire one time.

Being poisonous isn't such a great thing sometimes.

[Anonymous No.4456681]

>>4456646

I suppose I didn't need to take the natural log of both sides first, but I find it makes it cleaner and easier to understand.

[Anonymous No.4456697]

>>4456584
This is only true if you take principle value. i^i is countably many real numbers...

[Anonymous No.4456718]

>>4456646

[Anonymous No.4456729]

>>4456697
True. I suppose a more general answer would be:

e^(-pi/2 + 2 * pi * k)

where k is an integer

[Anonymous No.4456739]

>ITT people who didn't take Complex Analysis

i^i is an interesting result but I'm surprised a board full of people promoting math (I'm a math major FWIW) are so astounded by this.

[Anonymous No.4456767]

>>4456739
Maybe, just maybe, they aren't math majors.
But on topic, Liouville's theorem is much cooler if we are talking about complex analysis.

Also, cool random topology facts:
-A three dimensional sphere can be decomposed into two solid tori, attaced along their boundaries.
-At any given time, there exist two opposite points on the surface of the earth with both the same temperature AND the same pressure. More generally, given two continuous functions defined on the surface of a 3d ball, there exists some point such that both functions have the same value at that point as they do on the exact opposite point on the ball.
-Holy shit higher dimensional spheres can be mapped non-trivially to lower dimensional spheres.
-You can imbed a 2d sphere in three space such that you can create non-trivial loops around it.

[Anonymous No.4456774]

>Also, cool random topology facts:

When you said that, immediately your second fact popped into my head. Probably one of the coolest higher-level-math-relating-to-the-real-world facts I've ever heard.

[Anonymous No.4456787]

>>4456774
Yeah, its pretty awesome when you're reading through high level abstract math and run into something that says something about the real world.

[Frank and the Adams !!xvbTXidFJou No.4456797]

>>4456437

[Anonymous No.4456815]

>>4456478
>mfw I live 30 miles from Red Rock Canyon and didn't know this

I have no face that can hide my shame.

[Anonymous No.4456899]

>>4456478
Not really. Lots of places were once ocean floor that dried up.

At some point some places were tundra, at some points in the past a lot of places were swamps.