I have a question for any evolutionary biologists out there.
So let's say, for the sake of argument, that the average height of a human male is 70 inches. Now, let's say that humans were put through a universal breeding program whose sole purpose was to make them larger. About how many generations would it take to increase the average human male height to 90 inches?
You could do it within a single generation, provided you are allowed to make the program as stringent as you wanted it to be: just prevent anyone under 88 or so inches from breeding.
0 generations. Find someone with the required height. Neuter everyone else.
>>8573199
*Kill everyone else
What if we don't actually live in the 3rd dimension, but instead, we're in the 2nd dimension and everything just looks fat.
>>8572386
>>8572386
Wait, what if we're in ONE dimension but it is just three way symmetrical??
>>8572386
What the fuck? Are you high?
What is momentum?
p = mv
Where p is my penis and mv is your mom's vagina.
You know when you fuck a girl and her moaning seems to increase as you stroke harder and harder? That's a good idea of what momentum is.
>>8572337
Fucking hell this is such an obvious joke and it's the first time I hear it. Almost fell of my chair.
t.PhD in theoretical phyisics.
Can I finish an undergraduate degree in mathematics with an IQ of 133?
Does shitposting on /sci/ make you happier?
>>8572160
Yes.
>>8572160
If this is a serious post, please unironically kill yourself. If you're trolling, delete your thread and then kill yourself
I know this function F(x) converges,
because terms of [math]e^x[/math] converge,
and [math]L_n(x)[/math] is decreasing, duh
but how do I graph this doggie?
[math]\displaystyle F(x)= \lim_{n \rightarrow \infty}F_n(x)=e^{-x}[L_1(x)+xL_2(x)+\frac{x^2}{2!}L_3(x)+ \cdots+\frac{x^n}{n!}L_{n+1}(x)][/math]
where [math]n \epsilon \mathbb{N}[/math]
and [math]x \geq 0[/math]
and [math]L_0(x)=x[/math]
and [math]L_n(x)= \ln(L_{n-1}(x)+1)[/math]
missed it by *that* much
[math]n \epsilon \mathbb{N}[/math]
Hey /sci/ I was fucking my girlfriend the other night, and it got me thinking... What is the evolutionary purpose of the female orgasm? Why do girls need to feel good during sex? I understand why males would need this mechanism, because they are the dominate sex and they need some motivation to go out and fuck women and reproduce. But all the female needs to do is sit there and accept the male. Females cannot reproduce with multiple males in a short amount of time in the same way a male can. What's the deal?
My guess is so females are more accepting of reproduction and more interested so it's easier for sex to occur. The more they realise that sex is pleasurable, the more they will want to reproduce. Of course not every girl feels that way but I think as a general, it's not wrong.
At least in theory, it seems logical.
Of course there's no basis for that really, and it's still kind of a mystery.
WHY DO YOU TWATS KEEP ASKING ABOUT EVOLUTIONARY PURPOSE SWEET JESUS MUTHAFUCKIN CHRIST
>>8569127
Sorry I believe you thought you were on the /creationist/ board, not the /sci/ board. Please go back Christfag.
humanity is underestimating time and health, good health, taking care of it, will give you more time and time can get you the rest of whatever you want/need.
>>8573743
Because you can't do shit when you're super old. So why even live to be super old?.
>>8573743
So long as you make it to 60/70, you're doing just fine. Besides, once you get there? Just go for cryonics upon your deathbed instead of a funeral and you never know, you might wake up to see 2500 or 3000.
>>8573753
people are living like shit:
terrible diets
no meditations
no exercise
STDs that lower inmune system
not enough sleep
devoting too much time to their jobs and shitty children
so they age like shit
Anyone know of a good book/textbook reading list for Astronomy? Of course there's this: http://4chan-science.wikia.com/wiki/Astronomy_Textbook_Recommendations but I'm looking for something a lot more in depth than that.
>>8573206
>I'm looking for something a lot more in depth than that
Like journal papers?
>>8573206
More in depth? Part of those books are pretty fucking in depth. Usually when you want to go a little more in depth from that point on, you kind of know what you need or at least know in which direction you want to go. So I don't know what you are asking.
>>8573206
I believe if you study these books you are capable to read papaers which is currently the "most depth" you can find. You may also want to look at the references of these books to find more material
imagine you can direct and record a movie with your brain.
what kind of movie will you create?
>>8573096
A movie of me plowing your waifu.
Fuck that bunny
THE MANE WHO KNEW INFNITY :DDDD (JAGOB BRENNET EDISHUN :DD)
So let me get this straight: There are ACTUALLY people on this board, RIGHT NOW, who ****HONESTLY**** believe the continuum hypothesis? People who call themselves mathematicians/logicians/computer scientists? It's not just an inside joke?
Unless you have a proof to the contrary, attacking people's guesses is a little silly. Nobody claims to *know* it's true.
Yeah man it's easy. Let Z be the integers and R be the reals
S= (Z+R)/2
>>8573077
How can your intuition be so deeply flawed that you honestly think there's not a fucking (uncountable) infinity of cardinalities between any two given cardinalities
This is the computer theoretical equivalent of believing in fucking santa clause
I'm 25 years old with probs about 6 months to live most likely
My family have money (makes me even more bummed out about dying DESU senpai) but anyway, should I go for it?
pic related
>>8572018
>Never have to cope with the whole fear of dying shtick
>Will probably die peacefully due to some fridge failure
by all means
>>8572018
>I'm 25 years old with probs about 6 months to live most likely
Sorry about that, OP.
FPBP and who knows if you could make history by being the first person to be revived by that, though.
Yes. Go for alcor, full body preservation (it's like $ 220 k). In 4-5 months move to scottsdale, Arizona near their building: it will help a lot since they'll be able to intervene on you as soon as you die, minimizing brain cells death.
Godspeed anon. Stay stronk.
Hey /sci/, I'm an Industrial Engineering major. What are some ways I can build a resume and what're some skills that I can learn outside of college to show different jobs I can be a useful employee? I heard of Lean Six Sigma, and that many ISE majors get certified in that. Are these certifications useful?
Also, how much does GPA come into play while finding an internship and post graduation. I am currently going into the spring semester of my sophomore year, and I am beginning to take more in depth and specific engineering classes (engineering economics, engineering computing and probabilistic systems). My GPA is hovering around a 3.0.
Any advice/input would help! Thank you!
Also, general university thread.
>>8571536
>industrial engineering
>industrial
Trashed.
>>8571537
Sorry I'm not smart enough and don't have the work ethic (mostly not smart enough) to go for mechanical. Also, computer and electrical don't interest me.
>>8571540
I ain't taking to you broke bitches, I got money now
Is it possible to calculate the area of a rectangle projected on the surface of a sphere? How does one do it?
>>8570814
Reposting because I made a mistake in my last post.
The equivalent of my picture in three dimensions would be mapping a circle with the same diameter as the sphere to the surface of the sphere.
So a surface (circle) of area [math] \pi (\frac{d}{2})^2 [/math] where d is the diameter of the sphere is mapped to a surface area of [math]\frac{ 4 \pi (\frac{d}{2})^2}{2} [/math] which is the surface area of the sphere over two.
Therefore, if we have a rectangle of the same area (examples would be that the width is pi and the length is radius squared) then it is fair to say that the area of that rectangle, projected to the sphere would be equal to the area of the projection made by our circle. In fact it should be defined that way as we would want objects of different dimensions but same area to have the same area regardless, when projected to a sphere.
So now lets say that you have a smaller rectangle.
Lets say that you have a sphere of diameter 1 and a rectangle of area 0.5
First you need to compare this area of 0.5 to the area of the circle with the diameter of the sphere.
This circle has area [math] \pi (\frac{1}{2})^2 [/math] = [math] \frac{ \pi }{4} [/math]
0.5 = [math] \frac{ \pi }{4} * \frac{2}{ \pi} [/math] so the proportion is [math] \frac{2}{ \pi} [/math]
So now take [math]\frac{ 4 \pi (\frac{1}{2})^2}{2} [/math] which is [math]\frac{ 4 \pi}{8} [/math]
and compute [math]\frac{ 4 \pi}{8} * \frac{2}{ \pi } = \frac{8}{8} = 1[/math]
So a rectangle with area 0.5, projected to a sphere has an area of 1. Good to know.
>>8570814
measure the spere and divide by 360 remember this measurment
measure the length from the centre of the shadow to the edge of the shadaow
now take the length and times it by by the first measurement
>>8570922
>measure the spere
By what? Volume? Diameter? Surface area?
>measure the length from the centre of the shadow to the edge of the shadaow
I never heard of this "shadow" you talk about in mathematics? Is this a graduate topic? Never heard of mathematical shadows before.
Alright, sci, I've been studying physics throughout highschool and part of college. I'm in my second year as an undergrad and I'm having trouble understanding the teaching methods behind maxwells equations. Pretty much Ive only learned the integral form of his equations, my college was easy so it was just plug and chug. No real integration or though behind it. I
later I transferred into a STEM-based school and found their text book that approaches maxwells equations from the differential form (del operator), the textbook blew me away in terms of shit i didn't know and now I'm confused.
Textbook: Electricity and Magnetism - Edward Purcell
Why are we taught the integral form first? Whats the difference in thought behind them? And at what point in College should I be able to do del and curl stuff?
tl;dr Ive only learned integral form of maxwells eq, now ive seen the differential form. Why teach it like that and do i stick with one form or switch?
>>8570718
I don't know, I've been taught the differential form first.
>>8570728
When you learned it, was it single variable or did you differentiate along x,y,z?
>>8570730
Our professor explained to us that Cartesians coordinates were not worth the hassle. We would always work in spherical coordinates, with symmetries and invariances so that only "r" would change.
So yes, it was single-variable in a way.
t. engineer
So I want to get a math related tattoo. I was thinking either maxwell's equations or a Mandelbrot or Julia set. Any other ideas?
>>8569874
>Any other ideas?
Suicide.
>>8569891
>rational behavior and intelligent
>on /sci/
Top fucking Kek, this board is only a notch above /pol/