Archived threads in /sci/ - Science & Math - 644. page
Images are sometimes not shown due to bandwidth/network limitations. Refreshing the page usually helps.
german here
whats the correct way to pronounce nought in science?
>>7642543
Nawt.
>>7642543
nuh-or-tuh, but it only has one syllable.
>>7642543
like ought, but with the "no" from november
How do you cope with not being able to imagine more than 3 dimensions?
I can't wrap my head around what happens in K-means algorithm when there are 4 or more variables.
How did you simplify or explain it to someone?
>>7642506
Explaining a K-means algorithm is like explaining colors.
>>7642506
How do you cope with living in the kernel of a rank 1 map?
>>7642521
In my domain it's image looks so blue.
Post math riddles.
Here's a challenging one:
>Suppose you’re seeding a lawn with grass sprouts. One grass sprout can cover the entire lawn your working on in 30 days. How long would it take two grass sprouts to do the same?
are you talking about stem tillering rate?
because theoretically a long lived perennial wit strong tillering tendencies could cover an entire lawn within a few years from one single seedling, 30 days seems a bit excessive
please clarify further
>>7628786
15 days
>>7642420
Clover is some bullshit
I got two puzzles for you, /sci/.
Which of the 6 figures at the buttom fit the pattern; and more importantly, why?
2nd
Upper right. The point is to add all the boxes on the same side and then substract all the right boxes from the left boxes of same colour.
>>7642345
2 black squares on the left.
It's pretty self explanatory.
Is there a specific order somebody who wants to brush up on their maths should go about it? I was looking for an order to do it in, pic related.
Would love your advice /sci/!
Use Basic Mathematics by Lang, it's what I'm using and it's good.
>>7642283
A book? I would prefer to do it on the internet if possible?
>>7642283
Actually I Googled that book and I think it's too advanced for me.
I just need something really basic.
>humanity will never achieve the power and scientific knowledge requiered to reverse entropy
>>7642191
You don't know that.
Now fuck off.
>>7642202
>p-progress is infinite humanity fuck yeah guys xD
>>7642191
>What is the Haber process
Humanity reduces local entropy on a daily basis.
I fail to see how the integral over dE should be equal to pi. I've tried multiple subsitution but I can't seem to find it.
Anyone out there that can shed some light on this?
>>7642110
it is trivial as the book says
>>7642115
Actually is says elementary..
Can you show me the steps or are you just here to be funny?
>>7642110
Does anyone has any idea?
How to git gud at poker using math?
>>7642029
Statistics or something, I don't know
youre going to reinvent the wheel? pokeracademy software, which has done all the maths for you, is what you want.
Study probability and learn to count cards. Black jack is the game with highest win ratio for the player (even though the house allways wins.)
had a cool lecture from a guy from Reactions Ltd.
We started off with some deriving of the Rocket Equation, but i missed one crucial part of his logic.
I dont understand how he got rid of dm*dv in this equation.
Any mathmeticians or rocketscientists able to help?
Infinitesimal * infinitesimal = 0. It's part of the so-called "sloppy calculus" used by physicists/engineers. (There is a rigorous way to define calculus using infinitesimals but it's normally done with limits and physicists don't use it anyway.)
dm and dv represent infinitessimal quantities of the mass and the velocity. The value of their product is so small that we can consider it zero.
>>7642033
Why is dm and dv infinitesimal?
Arent they variables - surely they could be anything? or am i being dumb
![Paul_Feyerabend_Berkeley[1].jpg](https://i.imgur.com/YY1oof9.jpg "Paul_Feyerabend_Berkeley[1].jpg")
Sup /sci/
I've been hanging out on our new /his/ board a lot the last week. I've seen this guy posted, and a lot of talk about how the scientific method is itself an ideology and not to necessarily be trusted.
Seems like bull to me, but what does everyone else thing.
It's sad that /his/ neglects the other humanities so much...
Anyway, yeah, you can't seem to get around the induction principle
(Just like you e.g. can't prove that it's not the case that 10 minutes ago aliens came to us and implemented memories in our brains that do not involve them + that make most people disregard the possibility that aliens just did this manipulation.)
So you adopt the scientific method as a <method> that has been proven useful.
https://en.wikipedia.org/wiki/Problem_of_induction
http://plato.stanford.edu/entries/induction-problem/
http://plato.stanford.edu/entries/rationalism-empiricism/
Also,...
Comment too long. Click here to view the full text.
>>7642070
Some anons seemed to be making the point that due to these problems, science should not be taken more seriously than other branches of thought.
e.g. saying 'science proves x=y' is not necessarily any better than saying 'Marx has shown y=z'
Apparently the scientific method is not impartial or neutral and is in fact an ideological tool of the powerful to enforce their own interests.
I just went there to talk about the Romans, but I got interested in a lot of the philosophy threads, and how...
Comment too long. Click here to view the full text.
>is itself an ideology
a completely uncontroversial statement to anyone with even a cursory knowledge of philosophy of science
>not necessarily to be trusted
we knew there were problems with the scientific method long before Feyerabend was even born
hey /sci/ents, me and my buddy were having a really good debate im sure you would apreciate
if a black hole suddenly teleported in the center of the sun, would the darkness and the light cancel eachother out? and would space be filled with aurora borealises afterwards?
please tell me, thanks
*buddy and I
>>7641710
huh?
>>7641706
yes
![tn_Drilled%20Shafts.jpg.img[1].jpg](https://i.imgur.com/tcR8Wif.jpg "tn_Drilled%20Shafts.jpg.img[1].jpg")
I'm sure we all know that the pressure at the bottom of the ocean is high. A few documentaries have shown this by sinking a styrofoam ball many hundreds of meters below the surface and then pulling it back up to find that the ball has shrunk many times its size.
My question to you fags is this:
Suppose I drill a mine shaft 5km into the earth. Assuming that the mine shaft does not collapse on itself and it is not filled with water. What will happen if I drop a styrofoam ball into my mine shaft. Will it become shrunken? (Ignore temperature effects at these...
Comment too long. Click here to view the full text.
the answer is aliens
>>7641700
THE THING WITH MATH AND /SCI/ENCE IS THAT YOU CAN CALCULATE IT
FIND THE DENSITY OF AIR AND THEN ADD THE AMOUNT OF THAT AIR INTO THAT 5KM SHAFT AND SEE HOW MUCH WEIGHT IS APPLIED TO THE STYROFOAM BALL IN THAT HOLE
>>7641700
pressure is caused by the huge amount of material above the object being held in place by gravity. It's crushed by the WEIGHT of the atmosphere/ocean, so in that sense it is caused by gravity. But without any material if you sunk that same styrofoam ball in a vacuum tube, nothing would happen as long as the material in the tube itself could withstand all the pressure the ocean is exerting.
Is "scientific illiteracy" really a problem or have we been meme'd by wannabe scientists trying to sell books?
Are you >imblying neuroscience isn't science ?
>>7641688
it's a problem when scientific illiterate kongressmen/taxpayer pull the plug on important research just because they don't understand why it's important.
a congressman used a fucking snowball IN CONGRESS to try to disprove climate change
you tell me
Could you guys name some products that contain potassium nitrate, and that are available in normal food stores?
>>7641649
bananas sealed in artificial n2 atmosphere?
>>7641649
Some toothpasts
>>7641649
ACME Rocket Propellant
"How Did The Universe Begin?"
Is this a malformed question?
Why do some physicists pretend they have the "answer"?
It began with the Big Bang.
>>7641576
which begs the question where did that ball of matter come from
>>7641578
From nothing
