Archived threads in /sci/ - Science & Math - 261. page
Images are sometimes not shown due to bandwidth/network limitations. Refreshing the page usually helps.
What's the longest amount of time you've spent on a single maths/physics/engineering problem?
Be honest.
>>7973875
Calculating the mass of UR mum
Still on it.
>>7973875
I've been semi-actively working on solutions to the P vs NP problem for the past year or so.
>>7973875
A few weeks on some project assignments.
Why doesn't anyone talk about cryoconite?
the what ?
>>7973833
Deposits on glaciers associated with volcanoes, fires, and human activities that absorb the sun's energy at greater rates than the surrounding ice, leading to hot spots that turn into shallow pools all across the glaciers.
>>7973841
Okay ? what is there to talk about it ?
How bad is being happy for you?
Take a look at these brainscans, Left is someone doing something they enjoy doing (irrespective of which activities were studied, such as watching movies, playing sport, talking with friends), Right is someone abusing cocaine.
Notice that the cocaine user doesn't even generate near the amount of chemicals in his/her brain than the one doing an enjoyable activity (red indicates higher concentration)
Should we be regulating entertainment to limit this effect? Kids nowadays are growing up with access to so much happiness...
Comment too long. Click here to view the full text.
> Brain activity is bad for you.
You should stop all your brain activity, it's bad for you :^)
>>7973775
Well, thinking itself also promotes the growth of high-grade gliomas.
http://med.stanford.edu/news/all-news/2015/04/brain-tumor-growth-stimulated-by-nerve-activity-in-the-cortex.html
This might also explain why men are at slightly greater risk for these kinds of cancers than women.
>>7973803
> A research says nerve activity in the cortex grows ALREADY EXISTING tumors.
oh wow, if I ever get a tumor I should stop using my head so it can grow more comfortably.
Also how does that relate to your argument ? You need to stop every kind of activity in the cortex, not just happiness. So you need to turn yourself into a vegetable so that a tumor doesn't turn you into a vegetable.
XX = male
XY = female
YY = yo wuddafuck
Seriously, what would the result be? I mean, i know it's not possible, but what would happen? I've heard that you need the X chromosome to live. But, still... would you just be a lifeless blob? something would be created, but i have no idea what...
your thoughts, /sci/?
>>7973719
You've got it backwards.
XX = female
XY = male
YY results in spontaneous abortion. It doesn't live.
>>7973719
It is impossible, but if it happened my guess is that the zygote (embryo) would not be viable. It would prematurely die and be expelled from the womb (in the form of a cell).
Hi, I am from Finland and our start-up team is on competition with this video. Winner is the video who gets most likes on facebook and the prize is 1000 euro. If you think the idea is good, please support our research by liking the video on FB!
fasebook slash startmeup2016/videos/190733121318021/
Ecoponics basically transforms biowaste into fishfood. In normal aquaponics, the main products are plants and fish, in ecoponics the main product is just fish.
Biowaste is delivered into the facility. Then it is transformed into animal protein, by feeding snails...
Comment too long. Click here to view the full text.
OP here. I am considering to deliver this to b.
Since you are not interested here in /g/.
All for the greater glory. Saving humankinds and hurdur.
You should help us. I could then again sell my wife to b..
Like many scientists have sacrified themselfs for the greater glory. So I would be the first scientist that feeds his wife to b.
You really should vote.
If you have any humanity left in you, just think of my young and fragile wife.
What kind of monster-imageboard would allow innocent woman to be feeded to /b/?
If someone gave you a blank cheque to do whatever experiment you wanted what would you do?
I'd love to send more Curiosity style drones to all our planets, I would love to see more images of Venus's surface and the clouds of Jupiter.
>>7973628
Russia is planning to send a rover to Venus. We have hundreds of pictures of Jupiter, look on the NASA site.
>>7973637
We don't have any from inside the atmosphere they're all from orbit m8.
They should livestream a descent into the core.
Nice to see Russia getting back in the race though.
Not worrying about legality I'd be interested in whole human cloning.
Can anyone give me a good reason for why one would binarize a graph before computing graph-theoretical measures such as the clustering coefficient or transitivity? Don't weighted variants of these measures exist? Why would you binarize the graph first?
>>7973575
>>7973575
please respond
Do x-ray scans cause cancer?
Radiation doesn't cause cancer
>>7973410
do bing search: Radiation-induced cancer
>>7973435
Radiation doesn't cause cancer. Cancer causes cancer.
A week ago, I derived pic related, then extended it to
[math] \displaystyle (1-a)^{-1}= \prod_{n=0}^{ \infty}(1+a^{3^n}+a^{3^n2})[/math]
then to
[math] \displaystyle (1-a)^{-1}= \prod_{n=0}^{ \infty}(1+a^{4^n}+a^{4^n2}+a^{4^n3})[/math]
then generalised it to
[math] \displaystyle (1-a)^{-1}= \prod_{n=0}^{ \infty} \sum_{j=1}^{k}a^{k^n(k-j)}[/math]
for [math]|a|<1<k \epsilon \mathbb{N}[/math]
amirite?
No.
used [math]a[/math] instead of [math]x[/math], sorry for fckup
Yes you are right. This is essentially a demonstration of the fact that every natural number has a unique representation in any natural number base k, k ≥ 2.
Serious question, Anon.
I'm glad i don't have an erection problem yet but i still have a problem.
A problem with my dick.
I have, somehow, "broken" my ejaculation module, per se.
I don't know jack on biology so i don't know which part around the prostate manages the pumping but my ejaculation has become weak over the years.
What can be the cause ? Can it be fixed ?
Dick and I thank you.
>>7973053
Do you smoke?
Are you fat and/or eat fatty foods?
Do you drink or do any other drugs?
Do you have an illness?
Did you insert your penis in something besides a vagina, mouth, or hand?
Are you gay?
>>7973059
That's the part where i get lynched, right ?
>I'm fat (wasn't a problem before) 270lbs for 6ft 3in
>I smoke (since 15 years)
>I drink rarely
>no illness
>i masturbate ?
>I don't dick the men, that's like super gay
>>7973063
Lose weight and get in shape, eat healthier, stop smoking. Studies are contradictory on effects of masturbation even though its good for your prostate
If I wanted to work with DNA at an "invasive" level. Would I need to study biomemedical engineering/bioingenieering or biotechnology
>>7972989
>If I wanted to work with DNA at an "invasive" level
What does that even mean?
>>7972994
He wants to gene splice and play god
>>7972994
Modifying DNA, working with it instead of just investigation
>current year
>falling for the metal meme
Organic chemistry > Boring ion shit
Prove me wrong!
(Protip: you can't)
>>7972949
Wtf you little faggot organic chemistry is literally shit, you only need to memorize shit senpai
>>7972952
>organic chemistry
>shit
t. Thorium shill
>>7972949
chemistry is just applied physics
join the master race
Is there really a way to do math in your head faster?
Alot if books claim to teach their super secret methods, are any of them true? Any recommendations?
I'd like to do math quicker, particularly percentages and fractions. How do all the tv "human calculators" do it? Do you recommend learning it?
- probably
- it doesn't matter
- you're wasting time not learning higher level. You don't need mega arithmatic skills.
>>7972825
The only way to do math faster is to do lots and lots of it. Its basically like any other skill.
>>7972825
use a calculator they're more reliable
What is the comfiest field of math and why is it topology?
What is the objective of topology?
when i learn this what am i able to do?
>>7972711
Topology can be thought of abstracting the notion of limits and "closeness" in calculus. It allows you to extend these ideas to in different ways to spaces more exotic than standard Euclidean space.
>>7972723
intersting.
Ionic bonds are typically between metals and non-metals.
Beryllium is a Metal, and Nitrogen is a non metal.
Why is this book showing Be3N2 as having a covalent bond?
Is this an exception to this general rule?
>>7972485
brehs
>>7972485
its ionic the diagram is probably showing the lattice structure or something, ironic or covalent bonding is determined by the difference in electronegavitivy
>>7972485
did you even fucking read the book?
