is edx and khan academy a good way to study brush up on subjects before going to college?
fuckin bump
Dat.
Ass.
I was gonna answer
but then all the blood rushed out of my brain to somewhere else.
Pic entirely unrelated.
Hey /sci/, since you guys seem to be the most intolerant dogmatic and completely correct assholes I've heard of about science I suppose I'll ask you before anybody else. I'm an "aspiring" sci-fi writer and my story needs a method of propulsion to get the protags to another planet that is somewhat nearby in astronomical terms (maybe 15ly max, yes I know how huge of a distance that is). While this might seem a bit basic I'm trying to go for a semi-hard sci on top of the fi. Sub-light etc is fine as long as it's something that could actually have a decent chance of working.
A few other things:
- In this universe humanity managed to finally try to make a warp bubble drive and it "worked" but ended up half-cooking the small unmanned probe inside of it with radiation and the exit blast (which was to be at Ceres) ended up screwing up the orbits of a bunch of objects in the asteroid belt. This really shitty scenario for earth's continued not-asteroided-to-death status is the motivating factor for the space mission.
- Cryogenics/Suspended animation is a thing. It's not exactly the same thing as stopping aging entirely but let's just say it's enough for any sublight space mission to nearby stars.
- The ship can make a magnetic field to protect itself from charged particles and other associated space hazards.
- Fusion power is also a thing, enabling large amounts of stable power to be generated in space.
- There's a space elevator, so getting big shit into space isn't as much of a problem.
Feel free to call me a moron but I really think you guys are probably my best bet to get something non-stupid.
A nuclear salt water rocket.
Either that, or read the High Frontier by Dr. Gerard O'Neill and go nuts.
>>7794519
ayylmao
> go into extreemly exentric and high altitude orbit from the sun
> produce exit blast at a point far away enough for any orbital perturbances so not be an issue
> the majority of the journey is spent getting far enough away from the sun to do a successful and non dangerous jump
> somehow fix the radiation problem????
> profit
Can anyone explain Lie groups and why they are important to the standard model?
>>7794327
https://en.wikipedia.org/wiki/Lie_group
https://en.wikipedia.org/wiki/Lie_algebra
https://en.wikipedia.org/wiki/Gauge_theory
https://en.wikipedia.org/wiki/Yang%E2%80%93Mills_theory
l2google
>>7794327
Quantum physics is a lie invented in the 1920's by a group of physicists. This group is called the "Lie Group".
>why they are important to the standard model
Except maybe the math of statistical physics, Lie groups are important everywhere in physics. I used to say mechanics and field(classical and quantum) theory is applied representation theory of a view Lie groups
>>7794500
there are even specific entries, such as
https://en.wikipedia.org/wiki/Particle_physics_and_representation_theory
So the World Health Organization has come out and said glyphosate probably causes cancer.
Glyphosate producers tell us that it doesn't affect humans because we don't have the shikimate pathway. Hur dur, our gut bacteria do however.
The Journal of Hematology & Thromboembolic Diseases recently published a paper linking Bt-toxin related GMOs to anemia and leukemia.
"According to Greenmedinfo, the new study shows thatBt toxincan target mammalian cells in particular red blood cells lineage resulting in significant damage and abnormality in...
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Monsanto shills, put that donut down and get in here! You have work to do! They don't pay you for nothing!
> cancerous things cause cancer
did you really had to make a thread about it ?
>The strangest thing about the rush by OCA and other anti-GMO folks to call this the latest “GMO” scandal is that the study didn’t test Bt toxins expressed by biotech crops. It didn’t even test the Bt toxins expressed in bacteria then purified. Instead, the paper says they used “spore-crystals Cry1Aa, Cry1Ab, Cry1Ac and Cry2Aa from B. thuringiensis var. kurstaki were obtained in lyophilized form”. Some Bacillus thuringiensis bacteria can go dormant, forming a spore, and form crystals around the outside of the bacteria to protect themselves.Comment too long. Click here to view the full text.
When will this AI meme die for fucks sake /sci/. Its really triggering me everytime I see this nonsense especially if its by a reputable website
Maybe you're the one who is wrong?
>meme
AI is a reality. Even the software that checks your captcha is AI. Will it kill you? Maybe, maybe not. But the possibility of it killing you gets bigger if you put this software in a drone copter with a gun and tell it to discern you from a road sign.
joke's on AI, I'm already dead
Q: In the last few years, some high profile physicists, including Stephen Hawking, Lawrence Krauss, and Neil DeGrasse Tyson, have made disparaging comments about philosophers, basically saying they have little value to the real world of science. What do you make of these attacks on philosophy by your colleagues?
A: I think it shows lack of imagination and lack of knowledge of what philosophy is all about. There is a lot about the world besides the laws of physics and physical phenomena. There are centuries of experience of wrestling with these problems and refining those...
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fuck forgot article link
http://nautil.us/issue/32/space/beauty-is-physics-secret-weapon
>>7785072
>http://nautil.us/issue/32/space/beauty-is-physics-secret-weapon
Would it be considered lazy of me to not read the article?
>>7785086
well it's not that long and cheapo polemicization potentials aside it's a solid article
How does your human eye observe the data ?
>pic related, I read it and draw the graphs by hand.
But seriously, what would you recommend.
I use Gephi to visualize Networks, and for other data I generally plot with pyplot (not to far from the pic).
The latter is rather exhausting, if you want a fast visualization. So maybe you know a better tool that has an easy GUI, but can be used on a code base as well.
i fingerpaint my graphs on your mom
>>7798172
Are you wroking with Big Data ?
Is something (an idea, statement, etc) that isn't immediately measureable or testable, worthless?
>>7798118
Why would you think that?
>>7798123
I don't, but many people do. I've seen many people here posit that something is worthless if it cannot be processed with the scientific method.
Then it is scientifically unprovable. It's not worthless ofcourse, but it will never reach a level of credibility to be mentioned on a purely scientific basis, and you will have a very hard time trying to convince people to it's existence.
Why didn't European mathematicians accept negative numbers before the 17th century? What's so puzzling about them? Do you accept negative numbers?
Is x^2+6x+1=0 even solvable?
>>7798059
As a European descendant my fingers and toes only go up to about one and a half score. I don't know how many you'd need before you start having no score.
>>7798063
I hear that if you take infinitely many people, give them each a number, ask them to raise the same number of fingers as the number they have, and count the total, you will get a number that's less than 0.
What do you think about this? Is zero a proper number?
I've never seen 0 cows. I've noticed an absence at times, but I didn't see some number of cows.
If you are in a basement without cows and say you see a number of cows people will think you're retarded.
This is the logic that kept the western world from figuring out complicated mathematics for centuries.
once zero was 'discovered', the game changed and retards like you were merdered to death
Its a place holder, without which there would be no distinction between 1, 10, or 1000000. We're not about to switch back to roman numerals anytime soon. If it really bothers you so much, you could always move on to base 16 like a computer.
>>7798107
Write 65280 in base 16 without using any zeroes
I'm an organic chemist and my field of work has vanished over the last 20 years. Statistically, organic chemistry is the most difficult field of study and the least lucrative of the physical and natural sciences.
Is there anywhere promising to follow a career outside of law enforcement?
>>7797937
grow dank ass weed
>>7797937
>Go to law school
>Get a JD in patent law
>Enjoy the shower of money
>>7797937
Check out indiebio program. They fund dank biotech startups.
You can definitely find a job and make money if you're smart
Can I get some general advice for being a TA? Just got my lab assignment and I have partner who is a PhD student so that should help.
But just general dos and donts of being a TA? I'm pretty nervous
>>7797840
Do: Fuck the hot students
Don't: Forget to kill them and hide the body so that they don't ruin your academic career.
>>7797860
advice not related to relationships with students please. Not even going to have to worry about that
>>7797840
Do: try to help kids learn more independently; don't handhold, but don't leave them to die
Don't: worry about stupid fucks who couldn't think their way out of a wet paper bag
How should I know that 'cause and effect' isn't just a redundant/convoluted way of thinking and that everything (including my thoughts) don't just happen to happen for no proper reason!?
>>7797812
Should you? Does you mum not allow it
>>7797812
Doctor Manhattan said "all of time happens at once" so maybe it doesn't matter weather or not your predictions are true if you believe they are; if you don't then I'm afraid you're fated to fall through the endless void which is chaos for the rest of your life
>>7797812
No one can help you, OP, nor do they want to. The zombies don't even have the emotions necessary to comprehend your mind
NEW MOON LANDING FAKE
This image?
its this crater....
>find pic of crater on earth
>photoshop it to look like moon
>photoshop the earth into the sky
>pretend it's an image from NASA and present the original crater as proof that it's fake
nice
Does masturbation make you go blind?
It does. If you look at the computer screen too closely
>>7797223
In the sense that it robs you of motivation and vitality, and you grow less perceptive to the reality around you. It doesn't physically affect your eye bulbs, but it makes you disinterested in things and incapable of noticing more and more aspects of your surroundings. Source: me.
>>7797585
Good post