>wind and especially solar energy is too expensive and inefficient
>nuclear is too expensive and risky
>hydroelectric is almost capped in most places
>even Germany will continue burning lignite coal until at least 2050
Is global CO2 reduction even possible?. Environmentalists hope we can decarbonize SOME western countries in the next few decades while the rest of the world continues to produce more carbon.
And this is not even mentioning...
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>>8074535
>nuclear is too expensive and risky
But it's neither of those.
>>8074537
http://www.telegraph.co.uk/news/2016/05/03/frances-nuclear-giant-areva-admits-to-400-irregularities-in-nucl/
France has a bunch of old reactors that are having safety problems and to replace all of them would be an enormous cost. Pretty much every country who has them is seeing problems with meeting safety standards. And that really does not help public opinion either.
do electrons travel on the surface of orbitals or do they dive 'into' them? I never understood this. Are the surface of the orbitals the farthest the electrons travel or is it a surface the electron is confined to?
>>8076195
aren't they volumes of highest probability?
>>8076195
the surface usually contains the volume that the electron is in 90% of the time
>>8076195
Electrons aren't really bounded. The orbital represents the highest probability density.
Any plans for a /sci/ study group over the summer? What about this?
>>8061334
Going thru.
Algorithms: CLRS
Abstract Algebra: Pinter
Lambda Calculus
Haskell Programming
Catogory theory (to connect what I learn in algebra + lambda calculus + haskell together)
Java: online tutorials (not for fun but for fall semester).
This random math text book with lots of interesting advance math/proofs/puzzles
>>8061334
I don't think they're treating the category of sets correctly, but unfortunately I don't know enough category theory to call them out on it.
>>8061344
what you do not like?
Can AI have consciousness, if it's nothing more than electrical activity on a neural net ?
>>8076006
yes
>>8076006
maybe
Why are microwaves still legal in the USA?? How can we justify feeding radioactive food to our kids?
Microwaves are proven to make our food so much worse for us than natural cooking methods, and they have been linked to increased rates of cancer and (surprise) obesity.
It's so hard to find unbiased info on this topic because of the radiation lobby: http://www.rense.com/general2/dangers.htm
>>8076033
Bull-fucking-shit.
Nice sources
>http://www.rense.com
shit, is that webpage what's going on in a tinfoil's head ?
hey /sci/ doing my first A level exam Wednesday it's maths core 1. I've done a lot of practice so I'm feeling confident but things can always go wrong. most of my mistakes boil down to copying down some information wrong and fucking up a simple multiplication ect.
what can i do to increase my score?
>>8073625
>core 1
Did this when I was 10 years old and got 100 marks. You don't deserve to be on this board if you get any less
>I've done a lot of practice
>what can i do to increase my score?
Do more practice.
>My mistakes are from copying information wrong
Check your answers A level maths is a piece of piss
My girlfriend will be doing psychology in September and I'd like to be able to talk to her about it to get good ideas flowing for any essays she'll have to do.
I'm a maths undergrad so I don't know much, if anything, about psychology.
What should I read to get knowledgeable on the subject?
just watch a lot of animes
>>8074230
>psychology
>science
just go read a bunch of buzzfeed/huffington post articles while watching rom coms.
Is there anything wrong with them that isn't specifically about Monstanto? Should they be supported?
>>8072513
>Is there anything wrong with them that isn't specifically about Monstanto?
not really
>Should they be supported?
Benefits outweigh the (mostly hypothesised or imaginary) downsides, so yeah.
>>8072513
They're just another useful technology. The whole concept of "intellectual property" is bullshit, though.
>>8072513
>that isn't specifically about Monstanto
you just answered your own question.
GMO have been shoved to market using backdoor tactics and lobbyist shills granting monsanto far too much control over them, none of it has undergone proper research, is the declining number off bees related to GMOs? i dont know, no one knows, not even monsanto, but it is entirely plausible.
i would have no problem with GMOs if the financial/governmental system around them wasnt so...
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What to do, /sci/?
Karate kick the the trolley off the track
>>8069205
you cannot change choose since there's only one node in the image
change uper track after the fronteheels drive on this track switch to the lower trach
Just finished my calc3 final exam
pic related
How much of that did you know at the start of Calc 1?
>>8075608
Very easy you just need to know about the geometric series and telescoping sums.
>>8075605
part 2
also rate the exam
I'm retarded and so the only way I do well academically is through hours of study. How do you guys manage?
For me:
>Do it early in the morning after a high fat, high protein, medium complex carb breakfast
>Don't use loads of caffeine, just green tea, 3 cups a day maximum
>Instrumental electronic music ie Tycho or Fat Jon
>Slightly boring but interesting podcasts like EconTalk, ONLY IF THE MATERIAL IS EASY AND DOESN'T REQUIRE MUCH FOCUSComment too long. Click here to view the full text.
>>8060486
>music
dON'T.
>>8060486
Why don't you trust treat every week as if your exam is in the next week, gives you a nervous breakdown, but it gets the job done
>>8060515
music is weird how it works. I listen to classical, and when a fast tempo song like
https://www.youtube.com/watch?v=3X9LvC9WkkQ
turns on, my work pace becomes faster.
So i need a hand crank system for a show with two cranks, but they need to counter eachother. What I mean is, when one person uses a crank, the other shoudl be able to reverse its force with the other.
I cannot solve the system so if you have any ideas, please help.
mutual masturbation?
>>8075813
hah no, they are to be used to slow down or speed up a clock. I mean, one speeds up the clock, but when the other is turned, that one stops or pushes back the clock based on the force applied.
>>8075861
Easiest solution is to run the clock with servo control and have a digital counter for each crank. You'd have two crank sensors attached to a microcomputer and depending on the values that comes from the cranks it either run the clock forward or backward.
>friend wants to teach me programming
>first lesson he tells me to learn Chomsky Hierarchy
what the actual fucking fuck fuck is this shit?
i don't even know where to begin breaking this shit down. do i have to take linguistic courses before I can learn this shit?
am i actually a retarded person or is this shit insane?
>>8073460
wtf I haven't learned much programming, like I know a small amount and I've never even heard the phrase chomsky heirarchy
>>8073462
i'm half convinced he was just being nice in offering, and when i actually accepted he decided to throw me some retardedly-hard shit to encourage me to quit so he didn't have to fuck around with it.
i dunno, maybe i really am just a retarded person... :*(
>>8073460
Uh oh, sounds like you've befriended an autist. Does he talk a lot about these things called "monads" and "functors?"
How can I be a polymath /sci/? Is still possible?
Advices, tips, sources...anything you might have.
>>8069482
First of all you have to get rid of emotions.
have an IQ > 180
be on talk shows as child
make legendary genius mathematicians fall to their knees and weep when they witness your potential to advance the human race
graduate MIT before 15
PhD before 18
do math on windows
>>8069489
This.
tl;dr being a polymath isn't possible today.
Need some good math jokes or puns to post around teachers classroom
>inb4 why was 6 afraid of 7
>>8067600
A 747 was flying from Warsaw, Poland to London, England. As they were flying past some touristy landmarks (Big Ben and Parliament), the pilot came over the intercom and instructed all who were interested in seeing Big Ben to look out the right side of the plane now. Many passengers did so, and the plane promptly crashed. Why?
>>8067600
A mathematician is working at a bar. A man walks in and says "I want one beer for my first round, two beers for my second round, 3 beers for my third round, 4 beers for my fourth round, etc. on my tab." The mathematician then opens the cash register and hands the man 1/12th of a dollar.
>>8067631
Lmao