Archived threads in /sci/ - Science & Math - 1870. page

Why is Knight abbreviated N when it starts with a K?

Except we in Germany call it "Pferd" and not "Springer".

>>7910079
Because K for King I guess.

>>7910007
vectors are 3 dimensional, quaternions 3 but with 4 paramaters. Pretty simply actually if we represent a 3d vector as a rotation on x,y,z we get an euler orientation which basically sucks because you can get gimbal lock. Now make a 3d vector to point from a zero point to anywhere to describe an axis and use another variable for the amount to rotate around that axis.

>>7910007
Pretty great video by Numberphile:
https://www.youtube.com/watch?v=3BR8tK-LuB0

>>7910007
Vectors are a tuple of numbers, often used to represent position in an x/y/z kind of way; quaternions are an extension of complex numbers to represent rotations in three dimensions; they have four parameters and map to an axis/angle formulation of rotation. Two quaternion rotations can be combined simply by multiplying them together.

>>7909950
>Most people aren't able to long routines of practice simply because they don't get any better and its frustrating.

that isn't practice. practice involves self criticism and analysis of what went wrong and how to do it better. not just beating your face against something for some arbitrary amount of time.

>>7909950
>bawwww, studying is hard and I can never get better so why even try
How about you actually try different methods of studying? Do you honestly believe that people can only improve at what they were naturally talented at in the first place? People get better at things by staying determined even when their limitations come into play. Suck it up and stop pitying yourself just because life is hard.

>>7909950
it kind of goes both ways

practice definitely makes you better at a skill, but getting better gives you motivation to practice.

I play guitar and was terrible at it for a long time. I never wanted to practice because I couldn't translate the music in my head to the guitar and my phrasing was poor & choppy. I kept practicing and tried to learn new ways to express my ideas (learned new scales, rhythm, not rigidly following said scales, keys) while playing to a metronome and my playing improved a lot. Now I enjoy playing my guitar because I'm not limited.

if you're hitting a dead end in practicing something, you need to approach the problem differently and figure out what's giving you trouble.

>>7909759
What if the tile size changed

>>7909786
Axiom of choice.

>>7909786
Then the radius would change since we're measuring the radius with respect to the tile size.
i.e. 1 tile side is 1 unit

>>7909788
???

>>7909602
I understand your question but is it not just a matter of definitions?
What IS 1? We define it as the first natural number after 0. 2 is defined as the second one, and so forth and so forth. The integers are just an extension of the naturals to make them a group under addition.
The proof you mentioned in your post is nice but otherwise pretty useless since we are dealing with the definition of 1 here.

>>7909602
But... there aint no infinite number of integer between 0 and 1.
Those are real numbers.

I ondt understand
z^n < 1
What is n here? an integer, a real number or what?


Either way, it is an axiom that there is infinite amount of numbers between 0 and 1.
Check out the supremumaxiom
http://www.math.utk.edu/~freire/teaching/m300f12/supremum.pdf

It's quite an heavy axiom

>>7909614
amount of real numbers*
Just wanted to add that I am an engineer and that we don't go heavily into axioms.

>>7908964
>What's the logic behind that?

You rotate something backwards and then rotate that backwards, you get something right side up

>>7908964
I don't know, but it would pretty much break all of math to do anything differently. Math that we know corresponds to real world phenomena.

>>7908969

I ask because imaginary numbers seem like damage control to me.

look at it

>>7908487
I have a welder shield,is that good enough?

Right over the mariana trench? I will inform /x/

Mars is still too small to keep the core warm and the magnetosphere going.

>>7907938
>ifl
Nice b8.

>>7907946

source is unimportant. Ive found it on facebook feed. Im just pondering the idea

natural selection doesnt evolve for "best possible", it evolves for "good enough does the job"

funny you should say comfy, my blanket is a polar bear

They didn't evolve with them, because, they weren't needed... We just steal the fur right from an animals back, so we don't have to waste energy having our bodies doing it, instead, we use that energy for our brains.

File: Bears and box.jpg (110KB, 700x525px) Image search: [Google]

110KB, 700x525px

Related question:
Why do humans think bears are cute? It seems more natural to be afraid of them.

nigga how long did u spend typing this shit out

>four choices
>one correct choice
>33.34% chance of being right
wat

>be retarded
>discover /sci/
>prove to /sci/ that I am truly retarded
Congratulations.

how far can i push a 299792459 meter pole in .5 seconds

>>7905543
Not very far from its starting point

>>7905537
Can't transmit information or some shit like that

>>7907469
If we use my definition of autism:

>Autist (noun): A person who did not lose his virginity while in high school or before he reached legal maturity.

Which is 100% accurate, you would be surprised.

Then a lot of people. Our friend Isaac there was a super autist. He never lost that most precious of v-cards.

>>7907469
Most, if not all. It's a shame that autism will eventually be bred out of humanity, leading to the onset of the New Dark Ages and the collapse of civilization.

0%. Isaac Newton wasn't diagnosed with autism.

>>7904049
I actually think this for some reason.
If something is based on logic and arguments, but you can't convince someone, then your arguments aren't compelling enough. That's assuming they're willing to spend the time to listen to all of them...

>>7904060
There's no compulsion in truth.

>>7904060
Some people dont want to see truth.

>>7904611

>What does /sci/ think about Bell Labs?

They were very good.

>What is today's Bell Labs?

Google is going to be the next Bell Labs.

>>7904619
>>Google is going to be the next Bell Labs.
Yeah, except Bell Labs were not stealing information, and generally being super sketchy.

>>7904619

I dont think so
>tfw Google has fallen from the light, and is now a dishonest moneygrubbing corporation like all the others

she had so much promise...

it's pretty cool, i guess

>>7904071
Wikipedia is shit. It's unreliable, biased and practically useless for finding information.

>>7904071
Wikipedia is sort of a jack of trades master of none. It's alright if you just want a brief read of a topic.