/sci/ - Science & Math

Are the times of world changing theories over?

Can there even be a second Albert Einstein?

>>6164954
I need something as specific as >>6164536 was.

I'm having trouble doing the rotation matrix conversions.

Sorry I seem so ignorant on the subject, but I'm not used to working with this stuff. I was a 2D programmer before starting this project. It's been a while since my trigonometry days.

What's the highest paying work for a mechanical engineer?

Symmetry. Why is it fucking everywhere

Post anything that took you longer than it should have and ask questions.

My most recent one:
>Physics 1 homework because I wasn't on adderall/some other shenanigans and got set back two semesters of math
>(a)Find mass for moment of inertia given angular velocity, Kinetic Energy, radius, and the object (assumed) to be a hollow cylinder. (b) What would mass need to be were the cylinder solid?
>Nearly an hour later I give up and check Yahoo Answers
>I was supposed to do the second part first
>KE = 1/2(1/2 (M)(R)^2(Angular Velocity)^2 --> M = KE/(1/4 (R)^2(Angular V)^2
>All this arbitrary stuff about Inertia on various objects without explanation

Can someone please explain why (or derive mathematically) the mass of a hallowed cylinder is negligible enough to not be halved like a solid one is? Or maybe why the Inertia for a solid Sphere is 2/5ths of its mass by the square of its radius?

I suppose if nothing else I learned I should write problems in their entirety and use them all of them in their entirety. I started with just KE = (1/2(M)(R)^2)(Angular V)^2 and tried to solve for mass. Still don't know how to do that, but I'm almost positive it can be done.

>this thread

>>3156294
>an inifinite number of these really fast classical computers

why are you stapling your papers?!?!?!

>>3018008
>vb not in shit tier
>js in shit tier
>java in high tier
>C not in master race
etc. etc.

The worst shit is when you have physics or engineering textbooks that give you mi/h and you had to convert to m/s, or some example as equally shitty like an acre to m^2 or something. This is after all the professors talk about how we use the metric system in the class blah blah blah but then you have to convert across two systems. Where, in every other country, you get one system in base ten and thats it.

So don't be hatin' on your science/engineering compatriots in America. We have to deal with additional bullshit as if science/engineering in itself wasn't tough enough. We'd change it if we could.

>>2641083
CAAAAAAAN YOU FEEEEEEEEEEEL
THE LOOOOOOOOOOOVE
TONIIIIIIIIIIGHT

>>2501171
>pronouncing sine as sin

Goddammit so Feynman scored "low" on an IQ test (even though that's incredibly impressive when you take into account that it's, what, two standard deviations away from the mean?) who the fuck cares he was an awesome guys why the fuck do you idiots care so fucking much IQ tests aren't the end-all to someone's accomplishments just look at what he fucking did for science and don't bother trying to compensate for his IQ score it doesn't fucking matter.

Also, what the poster above me said about ultra-high IQ people doing nothing with their lives: it's true.

...Seriously, do people in this day and age not know of basic geologic concepts?

>>2124487

>DYNAMIC REGRASPING

Rage thread, /sci/ edition. Go!
http://www.youtube.com/watch?v=Mk1BJlyDoh0&feature=related

YOU'RE ALL FULL OF SHIT WHEN YOU'RE BASHING EACH OTHER. You sound like you're arguing creationism. It's all so personal and whiney. Learn to realize that nothing is useless. Just misplaced.

>>1793622

Of course, in every day life the contributions of a medical doctor are more apparent. However, astronomers are doing what amounts to plotting the universe. Whenever we have the technology required to go somewhere besides this solar system (which we will NEED if we want to survive as a species in the long run), astronomical knowledge will become VERY practical. So what if astronomers are a little ahead of their time.

Hell, your arguments aren't even objective, and they certainly don't take a lot of factors into account. That's not scientific at all. It's completely personal.

Learn to appreciate things outside of your little box.

>>1494947
I DON'T KNOWWWW