Imagine you're a kid again

A fact that blew my mind was that by going faster you age slower.

The shape of the earth

For me:

>The sun is actually a star and we moved around it.
>Our ancestors came from the sea
>Our legs used to look like hands (I looked at my leg for the longest time and tried to move my toes like fingers and the realization creeped me out)
>The existence of the asteroid belt
>what pi meant (I asked my sister)

>>8800615
Is the double slit experiment a meme answer? Blew my mind in like 6th grade

>>8800615
D•I•N•O•S•A•U•R•S!!!

>>8800615

The properties of primes and prime factors

>>8800615
0!=1
I was so angry (i still kinda am)

when I found out I could use Pythagoras to calculate the distance between pixel (in qbasic back then) my mind exploded big time.

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>>8800615
that US blacks have an average IQ 15 points lower than US whites. That the average IQ of blacks is 85. Totally blew my mind.

>>8800628
!!!

>>8800628
This and everytime I found easy and solvable maths as a kid thanks to geometry basic stuff so I told my mom to make me an exam or, I could make the exam and she would check the answers so I could progress faster in the knowledge field (she denyed it and 10 years later I started getting my shit done and studying maths hard-mode again). Also the discovery of possible time travel.

>>8800645
Came here to post this

>>8800644
>qbasic

nostalgia bomb. That was the beginning of the end for me, now I post on 4chan

>>8800615
If you fire a bullet in a train moving faster than he bullet, the bullet will keep going forward and not go to the back of the train

>>8800673
Still fucked up over this

>>8800620
Honestly, this

>>8800673
Because the gun that the bullet is in is moving at the same speed as the train (i.e. it's a closed system), so it already has speed; firing it gives it extra force forward and so the bullet travels forwards as expected.

Bullets don't go backwards just because our rocky planet is hurtling through space at 32,000 km/s

>>8800615
If you drop an anvil and a feather from the same height they are supposed to arrive on the floor at the same time but they don't do so because of air.

>>8800712
Thanks captain obvious
you are a great addition to the /sci/ board

>>8800615
DESU, the arithmetic mean formula. Still blows me away every time. Take two (or more) values, could be as far apart as you like, add them and divide by the number of values, and wah-law, the average. Beautiful.

>>8800615
That light travels 186,000 miles per second. (or 300,000 kilometers per second for you third-world countries)

>>8800615
In no order:
How big the USA really was, as a kid who grew up in Alabama I didnt really know the rest of the world existed until I was 8.
How lightning worked
How weather worked
The states of matter
Bacteria and Diseases
The general concept of space was incredible

>>8800645
So that means black teenagers have IQs in the low 70s making them mentally retarded and black kids are in the 60s making terminally retarded and black toddlers are all the way in the 40s making them dumber than full grown chimps.

So everytime you see a black toddler you are witnessing a turbo tard.

>>8800759
>wah-law
Get out

>>8800851
Its a meme you dip
everyone knows its wa-la

Reading about supernovas in my first science book

>>8800823
How they calculated c still blows my mind.

>>8800615
proof of Pythagorus was pretty mind blowing in grade 8

>>8800615
UFOs.

The possibility of alien life has always been on my mind but the day I saw the pictures of a burnt alien in a crash, that gave me nightmares for weeks.

>>8800625
fuckin brainlet

>>8800719
go google the lunar footage of this concept, its cool

>>8800615
>being a nigger
i would hope something would blow my fucking mind so i'd have better luck next respawn.

>>8800640
>0!=1
I was so angry I couldn't understand this in school

Da cat is alive

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>>8800846
Before modern IQ graphs were updated, in the 70's most blacks had IQ levels of around 75. This means around 90% of the black population classifies as mentally retarded; black children don't pass the mirror test until the average age of 7.

>>8800628
this was me and how fucking huge space is

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>>8800615
Wasn't quite a kid when I finally discovered these, but
>For the same weight, making an airplane bigger actually REDUCES the power needed to keep it airborne
>For a given airplane in a max-effort turn, more speed actually REDUCES turn radius (up to the point that the wings get ripped off due to G-forces)

>>8800640
People who go on about how "angry" they are about definitions, semantics, some linguistic quirk are usually totally retarded and know not nearly enough about a subject to warrant such anger. (ie faggots who argue about tau vs pi)

I'm a brainlet but here it goes

The fact that my lineage goes directly back to animals that weren't human and eventually to substances that weren't even living blew my mind the most as a kid

This one sounds really stupid but I also liked the thought that I was technically "in" every picture taken of the Earth after I was born and have always thought of it that way since.

Not really a fact but I really liked Carl Sagan's pale blue dot monologue a lot and listened to it almost every fucking day

The Law of Conservation of Energy

I also used to take comfort in the idea of heat death but I'm not so sure that theory's accurate anymore

>>8800615
>diameter = 2*radius
I used to ask my dad how long a diameter was. I thought it was 2 metres for the longest of time.

>>8800903
>some stars explode when they die
that one blew my tiny brain back when I was 5

>>8802331
75 is African IQ so it looks like the white blood of American niggers boosted it higher.

>>8800615
That heat is light and we're all like little light bulbs walking around and when the light stops you die.

>>8802350
I'm not going on or arguing about that, i just didn't like it because it isn't consistent with the first definition of factorial that they taught me

>>8800615
That "gravity" is not a pulling force by mass its an acceleration to electromagnetic voidance.

>>8803041
Is this true?

>>8803041
you learned that as a kid?

That strange matter converts all matter it touches to strangelets

Every time I learned about a fundamental building block that could be classified, I was thrilled. It started with nucleons, then went to elements, then to quarks and leptons.

That neutron stars are big lumps of neutrons

Black holes exist

Gamma ray bursts, but only a bit

it's been two days and i still can't remember something that blew my mind as a kid

>>8803043
Yes its true, and its why magnets attract as well. In a magnets case the voidance is more pronounced as the field coherency is very tight. Gravity is magnetism.

>>8803041
Gravity is motion through curvature of space time

>>8803045
I did actually though I'm only 23 now so I guess it wasn't that awful long ago.

>>8803072
Gravity is a acceleration to dielectric void space caused my motion through an electromagnetic field.

>>8803089
please explain

>>8800615
Each and every one of us is a skin covered skeleton holding up a sack of goop.

>>8803094
Consider why a magnet "pulls" as is commonly thought. What is different about a magnet before and after its magnetized? Its field coherency. The same difference between a 5w lightbulb and a 5w laser. If you examine a magnet under a ferocell you can see how the field lines propagate to form a whirlpool shape in the center on both "poles". A magnet is always seeking to restore the balance lost during magnetization. The earth is exactly the same except its field coherency is not nearly as high. Quanity makes up for quality though and earth has a massive electromagnetic field and thusly a massive dielectric voidance.

>>8800620
you age slower relative to an someone who isn't going fast. From your perspective it won't feel slower though

>>8803094
Btw Tesla and all the greats knew these things, gravity is not as mysterious as the established dogma would have us believe. The ether is real, and its just a all encompassing electromagnetic field.

>>8803126
How does the Michelson-Morley experiment work?

I didn't understand back then how it disproved the existence of ether.

>>8803058
Maybe your mind weren't blow at all by science as a kid. A lot of people o /sci/ are gonna tel you you are a brainlet for that, while in reality they were just emotionally affected by something that didn't affect you, and there's literally nothing smart about being fascinated by science.

irrational numbers (i still really like the proof for root 2)

fucking magnets

>>8803131
As I remember that experiment used a half silvered mirror to send a light beam in both the transverse and longitudinal directions and then see if they arrived back at different times due to interaction with the ether. They did the test multiple times but not since the 1920s. In my opinion I don't put much stock In their findings because electromagnetic fields are always the same shape unless effected by another and there are no straight lines in the universe. Where we are in respect to the source of the ether would be needed.

>>8800615
Gabriel's horn
Finite volume
Infinite surface area

>>8803168
I don't get it. How would it have different measures? They were implying that an inertial reference system existed and it was the ether, right?

So why would it change the measures? I don't get it.

>>8800615
the motherfucking cissoid of diocles

>>8803197
I assume because in one direction you would be either working with or against the perceived flow and the other direction should remain the same.

>>8800615
How big space is. My family had a huge space atlas, and one of the foldouts showed sequentially larger scaled sections of space. It started with the Solar system, then showed it within the Orion arm, then showed that within the Milky Way, then the Local Group, then the supercluster, and finally the entire universe. Getting the scale of our planet in the context of the universe is pretty mind boggling as a 5 year old kid.

Also the fact that everything in the EM spectrum travels the same speed. Also the effect of gravity on spacetime. Also quantum superposition and entanglement when I was a bit older.

>>8800615
That we were really zooming around at like 20km/s in a rough circle

And that if you want to go somewhere in space you go fast in a circle too, but you turn off your engines after you're going fast enough

>>8800615
When I was a kid, probably between 6 and 10, my family went to the science center in our city and this guy showed us that if you put a tennis ball on a basketball and drop them, the tennis ball goes flying. I remember being amazed by that.

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When I was around 8 or 10 I was thinking about Back to the Future and I concluded that it would be possible to go back in time, but not forward. Then when I was about 20 I was in the brig and I came across an issue of Scientific America that said something like, "According to top scientists, if time travel is possible, it will likely only be possible to go to the past, but not the future." It blew my mind in a not very good way since I was in jail. I thought, "Damn. What I am I doing with my life hashtag wasted potential."

t. el Arcón

>>8802331
>black children don't pass the mirror test until the average age of 7.


That kind of sounds like bullshit friend, would you mind providing a source for that statement?

>>8803112
WOOAHH

>>8800673
what if you fire it from outside of the train?

>>8800615
>got a book about space in late 90s
>original Hubble Deep Field is in it

I stared at that picture for hours. I still get the same feeling from it, that the galaxies are screaming out at me, the vastness screaming in my face. I get it with other Hubble images as well, mainly from the nondescript, non focal point galaxies, just the ones floating in the background, with a tiny bit of detail, a spiral arm or two, never imaged again. Trillions of stars, probably entire civilizations, all contained within a smudge that no one even notices.

Back then I didnt understand it as I do now, I was simply mermerized by it. There was a beauty to it that I just couldnt figure out.

>>8804463
why where you in prison

For me it was that you can take a bucket full of air, flip it around, and hold it underwater and then you have a bubble of air underwater you can breathe in.

Then it blew my mind again how dangerous doing that actually is because your lung can implode because of the water pressure

Apparently the earth isnt actually a solid ball and the core moves at a different speed with the crust like a soup of molten metal. That and earthquakes are big as plates of rock flopping down after sliding up a bit on each other. Really fucked me up. Also the fact that a pin needle tip of neutron matter would be heavier than the empire state building. I always wondered what it would do if it were dropped.

the moment when I derived factorial by myself

doing 9 times table up to 10*9 on my hands by lowering the finger corresponding to the multiple, and counting tens to the left of it and units to the right.

>>8803197
What >>8803226 said. They were testing to see if there existed an independent inertial reference frame in the universe, the ether. If true, one of the beams would have to be faster or slower than the other, as the interferometer itself would be moving against or with the ether wind (created from the fact that the earth rotates around the sun and thus must move through the ether). The difference causes a phase shift between the waves, which would change the resultant interferogram.

When I was young (around 12) I read that you can find out if a number is divisible by 3 by adding the digits and checking if the new number is divisible by 3. This completely blew my mind and after a while proving that it was true ended up being my first proof. On the whole it was a good formative experience.

>>8805275
>I always wondered what it would do if it were dropped.
Most likely it immediately burrows itself in the earth until it reaches the core.

>>8800673
not true

>>8805429
It would explode actually. The internal pressure would be orders of magnitude stronger than gravity.

The earth is rotating

Finding out God was bullshit blew my mind and made me question everything.

>>8800645
I think that the fact that the average white IQ is 100 is pretty piss poor like we should probably just create a whole new ethnicity/country of people with high IQs at this point.

>>8800864
please

>>8800673
but what if you fire it towards the back of the train?

>>8800712
What if I were traveling at .75c then I launch a ball at .8c? Would the ball go back in time?

1 Million exists

There's a spooky skeleton inside me

>>8800645

you must be black

there are numbers bigger than 100^100

still can't wrap my head around this

>>8800712
Do you have some kind of head trauma?

What makes you think that someone who browses this board wouldn't know such a trivial thing? Holy shit, I'm legit mad

>>8805318
Woahh just tried it

That I could see through things or not by closing one eye.
That shadows reach out to each other when they get close.
That burying through the floor on the second floor would bring me to another rooms ceiling.
That you can fit two cups of sugar in one cup of water.
That repeatedly ollying a skateboard would not make you fly.

>>8800615
Using rref, regression, fraction mode on my TI-84
Area metaphor for distributive property
Curve stitching, spirographs

>>8805653
This desu

>>8800615
irrational numbers
moon isn't following me
god is a lie

>>8807348
>Area metaphor for distributive property
can you explain about this senpai

>>8800615
DNA. The idea that you could code for a human being with bits of molecules in the right arrangement was amazing to me

>>8807558
*tip

>>8806993
There are numbers bigger than infinity. Wrap your head around THAT.

>>8800615
When I realized everything happening is happening at the same time always

>>8808340
prove it

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>>8809013
2+4+6+8+10+12... = infinity
1+2+3+4+5+6+7+8+9+10 = more than infinity

because (more than infinity) - (infinity) = 1+3+5+7+9+11... = something less than infinity but less than more than infinity

>In maths class, prob around 16
>Super long and convoluted problem, think it was some kind of infinite sum, took a few A4 pages, far above what we'd actually have to do in exams
>The 3 math nerds in the class including me solve it in distinctly different ways
>The teacher solves it in a fourth way, took him 2 full whiteboards

That was pretty neat.

>>8805192
I remember these exacts feeling I got from a documentary about space. It showed a 3d simulation of space with hundreds of galaxies, and I thought about all those nameless random galaxies and what could be in them, unknown worlds, civilizations that may have existed and disappeared there long ago.

>>8809029
Infinity is not a number. Both of those sums are equally infinite, as well as 1+3+5+...

There are different sizes of infinity

>>8800615
The nature of life. We're a bunch of complex chemical reactions.

>>8809067
>Both of those sums are equally infinite
this cannot possibly be true
surely you realize this

The reasoning is as follows:
the partial sum of (1+3+5+7...) is always less than (2+4+6+8...) for an equal number of terms

we assume that "..." is an operator which means "continue". It is reasonable to assume that 1+3+5+7... and 2+4+6+8... have an equal number of terms

it is also reasonable to assume that 1+2+3+4+5+6... has twice the number of terms as 1+3+5+7... and 2+4+6+8... because you can compactly split the sum into two infinite series

Furthermore, (2+4+6+8+10...) - (1+3+5+7+9...) = (1+1+1+1+1...) > 0

>>8809088
>it is also reasonable to assume that 1+2+3+4+5+6... has twice the number of terms
No. Sorry, but you need to read something on set theory. They have equal numbers of terms.

>>8809103
>he fell for the bijection argument
I'm not reading that shit again

Next you'll try to sell me that even numbers aren't a proper subset of the natural numbers

>>8809088
you've made it clear that even though you're trying, you know absolutely nothing about rigorous math.

>>8800622
the shape of the earth is said to be "geoid", that is, "resembling the shape of the earth" in ancient greek. what a cop-out circular definition, if I heard that as a kid I would have never gone to science

>>8809127
I heard that as a kid and I went to science.

>>8809088
You are an idiot.

This gets to my realization about the time I was doing research in my MS

The more I learned, the more I realized I knew very little.

>>8807559
You have a rectangle R. It has length 3+4 and width 2+5. So R is composed of a 3x2 rectangle, a 3x5 rectangle, a 4x2 rectangle, and a 4x5 rectangle. Sum up the areas to get the area of R = 3*2+3*5+4*2+4*5.

You can easily extend the metaphor to negative numbers (eating a cake), as well as variables instead of numbers for lengths. The lattice method of multiplication is also based on this.

>>8809013
There are different kinds of infinity. What you think of as infinity is what we call countable infinity.

>>8809029
Also this guy isnt me.

>>8800615
I didn't have my mind blown when I was young. For me what I was learning in school was too intuitive to be incredible, and was just plain fun. When I got to university, I began having my mind blown.

>>8809267
Yes we are.

>>8800615
Airplanes made clouds behind them.

>>8809282
NB4 /x/ and /pol/

>>8803052
This

And also
>there are infinites bigger than others

>>8800823
>Literally Challenger accident
>Water freezes at 32 because...
>Electric constant k=1 wtf (or is that CGS)
>Yards, feet, miles... nice exact conversion factors

You don't legit think it's a more comfortable way to measure things, do you?

>inb4 it's more difficult so we're smarter hurr durr

>>8800615
Life fact:
>You die
Mathematical fact:
>Square roots, particularly i
Science fact:
>Things can go from solid to gas without melting

>>8809076
Came here to post this

>>8802331
>tfw bonafide 130IQ negroid at age 5
>tfw still grew up in majority black area

Socialization was suffering.

>>8809013
>>8809029
>>8809088

He probably means that there are differently "sized" infinities. A simple would be with integers (N), where aleph_0 = #(N) < #(2^N) = 2^(aleph_0) = aleph_1.

>>8809306
Of course I meant natural numbers.

I'm a dumbass, but I didn't find out until junior high that letters in algebra were basically variables. You could insert different values into letters in an equation and get different results.

I kind of feel angry that teachers failed me like that. I wasn't even a troublemaker, just wasn't taught well. Wonder how far back going to shitty schools set me.

>>8800615
That faggot who calculated c with the help of a moon eclipse.

>>8809322
I had to tutor quite a few of my classmates who didn't quite grasp the concept of a variable. Don't feel bad, everyone stumbles.

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>>8800615
Unit conversions in chem class.

I was a smart but lazy kid who blew all of his time playing gamecube. When we learned how to "cancel out" units I was blown away and found a way to channel my autism.

I ended up becoming an engineer because of that class.

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When BSM taught me this it blew my mind.

>>8800673
why would you shoot a gun before slowing down a train?

>>8800615
black holes. they blew my fucking mind.

>>8809509
A wiseguy, huh? At least you can talk. Who are you?

Not exactly a child but in highschool after my calc teacher taught us derivatives the highly labor intensive long way that took forever I turn to the next page in the book and the simple shortcut

f(x)=x^n -> f'(x)=nx^(n-1)

I felt fucking BTFO

Not that young but

Vaccum and atmospheric pressure

And how bernoulli discovered void by puting a barometer INSIDE another barometer

Mind=blown

>>8809029
>2017
>Doesn't know that 1+2+3+4+5+6+7+8+9+10 =-1/12

fucking brainlets

>>8800615
That there are other liquids at room temperature that aren't composed of water.

I though gasoline was water based for the longest time and thought that the solution to the oil crisis was alchemy.

Then I took an actual chemistry class in highschool that wasn't in a religious school run by an insane asshat.

The fact that time isnt constant throughout the universe and can be speed up/slowed down by simply changing how fast you were moving

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>>8800615
I had a full fledged break down when I was 4 when I found out that I was going to die one day.

My mind was completely blown when i realised most mathematical operations were actually just approximations

>>8800615
How the fuck do magnets work?
>(((Electromagnetism))).
Suuuuuuuuuure... crypto-Jew.

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>>8800615
I used to lie down at night and watch the stars. After a while I started having that weird feeling, as if I could fall to the sky, free of the bond of gravity. I promise that I could also feel the rotation of the Earth.

>>8803032
holy shit

>>8805275
>I always wondered what it would do if it were dropped.
Check my mixtape to get an idea.

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>Everything pertaining to genetic code and protein folding
>Matter contains mostly vacuum (at least, that's what my teachers told me)
>An object resting on a table is maintained by electric forces
>Heavier objects are resting closer to the table
>A daisy is not a flower but an ensemble of flowers
>The bottom part of what you see is recorded by the upper part of your retina and your brain flips the image somehow
>The temperature receptors in the skin measure the time derivative of temperature, not temperature
>Everything in molecular biology happens super fast, but that is because our definition of fast is defined by what we experience with our neurons, that are themselves limited by the speed of biological reactions, so it is us who are in fact super slow
>The speed of light, goddammit
>Trees transforms air into wood through photosynthesis (ok, it needs a couple of other things like water, I know)
>We could as well by immortal, but death and aging were selected for by evolution. Same for sex.
>The part of the light spectrum that we can see is determined by what wavelengths can go through the atmosphere
>Coffee gets colder mostly due to evaporation, not by heating the air
>There are no thin or wide parabolas. Wider parabolas are in fact zoomed-in thin parabolas
>The cells in the cornea get their oxygen from tears
>Different vowels are obtained by adding successive harmonics
>Aluminium reacts with water to produce dihydrogen

>electricity isn't magic, it's just moving electrons around
>we can transmit power through electricity like hydraulics
>hydraulic analogy explains current and voltage

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[math]f:\mathbb{R}\rightarrow\mathbb{R}^+[/math]

Honestly, evolution by natural selection. When I first heard about it in any real detail I was struck by its sheer simplicity and elegance for such a predictive model, which immediately explained so much about the natural world and could be generalized so simply and readily for so many contexts despite being extremely intuitive. Though I couldn't express it in those words at the time, of course.

That was my first encounter with dialectical thinking. All that, and without even considering the material basis to heritability (genes) which clinched the whole thing. I'm convinced that's what made me a Marxist desu

>>8800625
>what pi meant
I remember being really disappointed and angry when I found this out. Like, here's the special """magic""" number that everybody fags out about and parades around for "nerd cred" like a forbidden idol in some goddamn minstrel show, must be REALLY fundamental to the deeper mysteries of life and shit. But no, turns out it's just that a square's inscribed circle has pi fourths its area, and its circumference is pi diameters long, and this is why we choose to call it pi, and that somehow manages to blow the minds of grown adults. That one quantity is a finite proportion of the other. Fuck me.
The stuff in Spivak on pi and y''=-y eased my butthurt, but, like, only a little.

The existence of god

>>8811506
You don't "get" pi.

>>8800759
Existence of other types of average (like geometric where you multiply terms and take the nth root, where n is number of terms, and so on) was the coolest shit, son.

>>8802350
Nah bro.
In 3rd grade my teacher told us a prime number was "one that could only be evenly divided by itself and one" and that all other counting numbers were called composite. She asked me if 1 was prime, and according to that definition it was, so I said yes. Then she flipped her shit and yelled about how it's not, even though the definition applied. That fucked with me. Yeah, "one is nonprime" is an obviously necessary definition for the fundamental theorem of arithmetic, I know that now. But she presented it in such a bungled way, it made me hate the issue much the same way vitriolic incompetents on here aproach 0.99...=1

>>8811453
???
f(x) = |x| + 1 for x in R?

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Not really a kid but it blew my mind the first time I computed a g-factor for a spatially extended charge distribution. Also in a continuum mechanics class I calculated the total force on a hemispherical light bulb under water but filled with vacuum. That was a fun one.

>>8804304
>*observable universe
FTFY

>>8811403
You're correct about plants building themselves with the air. They use water to move their energy and nutrients. Nitrogen, zinc, and phosphorus build the scaffolding for the actual carbon parts of the plant which they breath from the air. Light facilitates most of the energy.

Evolution. I kept going back to those sequential images of whales and birds in my textbook.

I am not a robot

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that this nigga dropped two balls of different sizes and they fell at the same rate

madman

>>8800712
You sir are a true genius! I could never have thought of that comprehensive answer myself!

>>8812018
There is a lot of hydrogen atoms in organic molecules, and those come from water.

>>8800615
space travel, and space in general desu i always wondered as a kid if I'd explore the stars

>>8805653
>>8807507
You guys know that in the new country we would make a new IQ system with an average at 100 right?

Zeno's paradox when I was 10

>>8800615
In early grade school when we're just learning basics of geometry and angles our teacher told us every triangle's interior angles added up to 180 degrees, I didn't believe him so I spent like a week trying to draw a triangle with angles that didn't add up to 180 degrees.

>>8809273
Yea as you can see we all have the same name

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>>8811403
>Wider parabolas are in fact zoomed-in thin parabolas

>>8800680
It really makes me mad desu it's so retarded

I remember being 5, lying on my bed and thinking about eternity. Both space and time, "there always is".

>>8800673
This still gets on my nerves.

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Let me post a thing which I think that is funny but happened to me for years

>ax +b = 0
>ax^2 + bx + c= 0

>me 11 years old: wtf man,,, why is this textbook so obsessed with things being = 0, what if the answer is 4 or 5

>>8813253
>>8813169
>>8800680
God dammit, the train isn't moving faster than the bullet before you shoot. They're moving at the same speed

>>8814207
I remember those feels, thought my teachers and textbooks were autistic. I was like what if a is 1 x s 2 and b is 3? THat shit doesn't equal 0. They do a really awful job at explaining WHY you do things in publc school math, they just told you to do it. I was told y = and f(x) meant the same thing just because they didn't explain what functions were or their significance.

>>8809547
It doesn't matter who we are. What matters is our plan.

>>8814880
>"set them equal"
>"cross multiply"
>"why equals em ecks plus bee"
>"to factor, you foil in reverse"
I'm half convinced there's a conspiracy to teach elementary math as poorly as possible. They could just pass out a sheet listing the allowed operations of elementary algebra, treat them as axioms, cover them, the intuition and their basic examples in two weeks, and make the rest of the year about problem solving with those techniques, but no.

>well, yeah, factoring a quadratic entails observing that (ax+b)(cx+d)=acx^2+(ad+bc)x+bd and then decomposing the quadratic's coefficients into suitable a, b, c, and d, but fuck if I'm ever going to tell the kids that
>lol just guess what it could be
>we can't have these kids learning that much abstraction this early on, even if it is necessary to solve concrete problems in the first place

>>8809029
These infinities are the same size though.

>>8802346
what the fuck

>>8803041
gravity is a shape you dingus

>>8809509
UUUU

>>8809610
He taught you how to take derivatives, and then on the next page was an at-the time unmotivated shortcut for a very specific situation (single variable polynomials) that can be derived from the way he taught you (limit definition)

This is him trying to teach you real math rather than just a cookbook of tricks

>>8802346
>>For a given airplane in a max-effort turn, more speed actually REDUCES turn radius (up to the point that the wings get ripped off due to G-forces)
Wait what why
Engine thrust is tangent to the flight path and thus uninvolved in circular components of the motion. Applying tangential forces increases speed but doesn't change the direction of motion.
>G-forces

>>8809610
>not proving it yourself with the binomial theorem
Weaksauce

>>8805638
upvoted

>>8800615
The fact that the Universe we are familiar with is all that we can observe(the cosmological horizon shebang)

>>8804612
http://www2.psych.ubc.ca/~henrich/pdfs/Journal%20of%20Cross-Cultural%20Psychology-2010-Broesch-%20Cultural%20Variations%20in%20Children%27s%20Mirror%20Self-Recognition.pdf


> In Experiment 1, Kenyan children (N = 82, 18 to 72 months old) display a pronounced absence of spontaneous self-oriented behaviors toward the mark.

>>8800615
the harmonic series converges

>>8816847
Diverges*****

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>>8800615
this

>>8815455
yeh boi, one of the main reasons I just didn't understand a whole lot when growing up.

First week at the university was a fucking enlightening time for me. Holy shit.

WATER
FIRE
AIR
AND DIRT

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>>8803089
Then why isn't this a ball of plasma and how did we land on it?

Oh, yeah, the NASA conspiracy to cover up the truth of the "Electric Universe".

That I'm not smart enough to know how stupid I am on any subject.

>>8816815
This is explained by Kenyan children not having having mirrors prevalent in their society.

As a kid:
>Pythagorean theorem
>What Pi was

A little older:
>Binomial expansion theorem
>Practicle applications of calculus
>Euler's number and why it has its properties

>>8800615
It was 1 + 2 = 3. Mind was blown.

Less than 1% of the mass of a star undergoes fusion during its lifetime, and the energy output of a star's core in terms of output/volume isn't that great, but the energy comes from sheer volume.

(x*x+x-x)/x=always the same as the number used for x

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I was looking at photographs of bonobos yesterday and studying their appearance. They look seriously spooky, like some degenerated bastard race of humanity. If you never saw one before in your life you would think they were little hell-sent devils with their dark, primitive features. There is something deeply chthonic in their eyes, a flickering spark of intelligence. What is staggering is that they are another branch of our ape family that could have beat us in the evolutionary race toward becoming civilized animals. Our lineage of man just happened to have the luck of evolutionary pressures on our side. That is why they and not we are in zoos. That "blew my mind," so to speak.

Material transforming into (smoke and) heat.

>>8809088
fucking mongoloid.
The sequence 2,0,0,0,0,... also has partial sums greater than the sequence of 1,.5,.25,.125,.0625,... but any brainlet can tell you the infinite sums of both are equal to 2.

>>8805653
>t. person who doesn't understand IQ test scoring.

The definition of an IQ of 100 is the average intelligence of the population in which the test is being administered.

>>8807003
There are many idiots on sci.

Example A:
>>8812913
this entire thread

>>8809298
Metric is great for science-y things. I prefer it over English in almost every situation, especially over our crazy units for volume.

But I spent some time in a professional machine shop a while ago, and English length measurements were definitely more comfortable to work with in general. "Base" 12 fractions are easier to deal with for quick mental calculations, bit sizes, etc. If you need to get precise you can just use a decimal, at which point it's no different than metric.

I remember being mindfucked by imaginary numbers. I just remember thinking "oh they fucking told me math was all bullshit, but I didn't believe them."

in 7th grade I was pretty interested by quantum entanglement

>>8800673
So if you fired the bullet then stayed behind it would it fuck you up cause it's still spinning?

>>8800615
[math]1+2+ \cdots + n = \frac{n(n+1)}{2}[/math]

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>>8805653
For great Kek.

>>8800627
It is, but we can totally let it go.

The number of things that came out of that was amazing. You can prove electrons are waves, you can find out the gaps between crystals, you can measure the wavelength of a monochromatic light (or you can find out which wavelengths are present in a polychromatic light).

>>8800615
that brainlets who go into stem grow up to be regulars on MSE

>>8803041
Why do compasses point to the pole instead of just downward?