So I am one of those smartass /g/ teenagers who is probably going to pursue a degree in pentesting. However, my real passion is mechanical engineering. I want to learn this in my own time. So far, since my highschool has a crappy math/stem path, I am graduating with Calculus 1 so I am not really advanced enough for late year college textbooks.
Basically all that I am asking is what topics should I pursue in a sequential order (like cal 2 phys 2 etc) so that I can at least do hobby stuff with mechanical engineering like designing my own 2 stroke engine or something.
>>8882317
great news. most of mechanical engineering actually boils down to straight algebra. the tougher problems require SOME calculus, but more than likely you are going to be using some sort of numerical method instead.
>2 stroke engine or something.
you can easily get through pic related with only some working knowledge of thermo and calc 1 shit.
engineering is 90% intuition and feels. the math is there to optimize and cover your ass in court.
>>8882340
I came here to post this.
Wildberger would agree on this, it is reals.
>>8882340
I was going into this thinking I was going to need so much overhead knowledge. I didn't know that it was going to be that straight forward. Thank you anon.
How much more powerful is the sun than a nuclear explosion?
The sun is a nuclear explosion you fucking brainlet.
>>8882140
>nuclear explosion
>doesn't burn out
Try again
>>8882137
Err I think if you measure then intensity of the light, you get the power of the sun, so then you just compare that to the numerous answers of how powerful a nuclear bomb is
IF oil is made by dead organic matter and intense pressure why do we bury people in coffins when they die?
why don't we throw all dead things into one big pressure chamber?
Shouldn't it be theoretically possible to turn people into gasoline?
Wouldn't that be better than just letting them rot six feet under?
>>8881386
It would take more energy to turn them into oil then you'd get out of it.
because thats disgusting are you serious?
I dont want to be the fuel in some degenerate's car.
Can you give me an example of the latter type of convergence?
Fuck off underageb&
>>8881357
=1 is indeterminate
>>8881357
[math] \sum_{i=1}^{\infty}\frac1{n^2}[/math] converges, [math]\sum_{i=1}^{\infty}\frac1n[/math] does not.
Is there any place in the universe where someone can exist and not experience any gravitational forces? Not even far away from the moon in our solar system?
if you got a shovel and hollowed out Earth, and then went inside, the net gravitational force on you would average out to zero.
>>8881140
Hold on, so you are saying we would not [i]experience gravity[/i] but the Newton law tells us that in reality there are still gravitational forces on us? Then why can we not hollow out other things for anti-gravity? What's to stop someone from hollowing out a huge boulder deep underground and floating inside it?
>>8881140
FROM the earth. What about the sun? What about the supermassive black hole in the centre of the galaxy?
tl;dr - no; if you're in the universe, you experience gravity
Hey, first time posting on this board. I'm a 19 year old in a German high school and I really want to study maths. Do any of you have tips what I should practice before I go to university? I want to be ahead when I get there and if possible could you tell me where I can get a super detailed explanation of the maths I will need? Are there useful tricks to get into the right mindset of looking at problems etc? Thank you in advance
with "maths I will need" I mean stuff I will need to use at university
do the advanced courses or its not worth your time
>>8881073
Yeah, I'm trying to get into all of them except the "math revision" for the people who just need a passing grade in maths
I suppose a theory, that the information transfers through the physicists head. Or is it through his eyes reading the page? Google is flooded with quantum teleportation and it is burying the real teleportation information. How irresponsible it is to agree amongst each other that it's teleportation because you hope it is, if your gonna publish it all over the internet.
>>8880806
Yes, it is. Why does it bother you?
>>8880809
Who's word are you taking for it? I can disprove it, just tell me the second last step of one first. It bothers me because I can't find real teleportation.
>>8880839
do you even know any physics you faggot?
Code breaking is a science right?
Have a go at breaking mine.
JBGFVJKKMLYIRNIHZWSEACCR
Good luck.
>>8880794
It could LITERALLY be anything.
OTP is not breakable, and without any knowledge about what a system you are using to encrypt everything is equally likely.
>>8880794
I think I have a clue though I don't know whether it is correct
It reads: OPISAFAGGOT
Doesn't look like there are any letters that can represent a space, so fuck you.
Might I ask because I know there's not a Centre of the universe since our universe is infinite and not finite but if the universe was finite what would the center of the universe be like would it be hot or cold because I always get the same stupid answer there's no such thing as a center of the universe.
but if there was theoretical was what would it be like cuz right now I'm working on a script where the center of the universe is a main plot device so would that'd would be helpful
Isn't it very not infinite since our spacetime was born in the big bang?
The plot of the centre would be a voverory hohotot bobutot nonotot yetot cocololdod, cocurorrory momilolkok sosucockok momy cocococcoc. You fofucockokinongog idodiotot. Tothohisos isos /soscoci/, nonotot dodamomnon /lolitot/. Kokysos. Dodanonkoksos.
>brainlets can't read this
If there was vacuum. Cold
A Star, it would be hot.
A planet, cold again.
Although. a Center in the universe would suggest that something would have to be at rest, or at least relative to everything else.
And since we know that everything is constantly moving according to newton's law only affected by the gravitational pull by other celestial bodies then a center would be almost down-right impossible to even exist.
Some russian guy made a homemade homunculus by taking a chicken egg and injecting his own semen into the yolk.
Can this actually happen? I don't think it's possible but everyone in the comments section believe it so i'm not sure what to think.
https://www.youtube.com/watch?v=HNLPXzlz6-I&list=PLneC76OgQbbilzeqh7HvpBpqvN_b8nNhi&index=2
Any thoughts? Am i autistic?
the egg is visibly opened before he "cracks it open"
>>8879966
he cracks it open 10 days before to put the semen into the yolk
after 5 years of doing geophysics, I'm coming to the conclusion that there might not be a future in this field. I want to switch to computer science since it should complement my major nicely because we do a lot of coding in geophysics already (mostly matlab/R).
is comp science hard? I've done an intro comp science course already and know extremely basic programming creating Matlab scripts.
would I get a job easy? is it worth to do another 3 years? should I just graduate with my geophysics degree and hope I get a job? my gpa currently is kinda shit (3.1) but I have 2 minors under my belt along with some extra curricular bull from doing some stuff with my academic centre thing. I also got on academic probation that I think is on my record cause I got caught sharing Matlab scripts.
You're already 5 years into this. Don't be a retard. Get your degree, a job, then do programming on the side.
>>8879705
I don't think ill get a job though. its all dependant on oil and I think oil will be phased out in the next 15-20 years. I don't wanna be jobless at 40 years old.
I mean I've heard of applications outside of oil but its primarily based on oil. and currently its really rough out there, my friends who graduated in 4 years have told me so.
>>8879732
What about seismology, mining or geodetics?
Are humans really the "most advanced" lifeform? Given that the purpose of and organism is simply to keep its' species alive by making more copies of that species with as diverse mutations as possible, aren't insects and bacteria more successful than humans?
The last lifeforms on Earth will be single-celled organisms. Did "life" have it right at the start, and every mutation that made life more complex is just a disadvantage that will be weeded out by natural selection in the final era of life on Earth? I can't see how evolution could be interpreted any differently unless humans reach the capability to colonize the galaxy.
It's not a contest, you're just taking some arbitrary stupid measure for success.
>>8878686
>most advanced
This implies that there's a goal to advance towards, that's a human construct. Nature only cares about your fitness in the local environment.
>aren't insects and bacteria more successful than humans?
Yes, and then bacteria are more successful again.
>Did "life" have it right at the start....
Oh I think I see what you're trying to say. But there is no direction to evolution, it's just something that happens. The ones that are more suited to the local environment become more successful.
>>8878686
checkmate atheist.
You see the truth is that humans were created by god and were given souls. Other living things were not.
That's just how things are.
>>8874468
ITT retarded math
the induction proof is wrong and uses faulty math in subtracting .9r from 9.9r to simplify it to 9
this is WRONG induction on the field of real numbers
The convergence Therm is WRONG too because it says it's approaching 1 but it is NOT 1, it acts LIKE one but is NOT one
Water bottle proof with no math? c'mon now
>with no math?
it's not like math is required for this.
>>8878523
>"it acts like 1 but it isnt 1 bro"
You sound like a hippy high on pot. You can easily prove the convergence theorem, and it is evident that the formula you derive that's supposedly equal to the number that the infinite series approaches is really equal to the infinite series
>>8878523
>Consider 1
>Divide it by 3
1/3 = 0.333...
>Multiply by 3
1/3 = 0.333...
(×3) (×3)
1 = 0.999...
>Quod Erat Demonstrandum
>Checkmate desu
Darkest material on earth looks like photoshop
https://www.youtube.com/watch?v=pUJyqQc75Vo
>>8878005
Fuck that really looks like ms paint.
is it possible to absorb 100% of light?
>>8878315
i'm not confident enough to say this is fully accurate, but i don't think that absorption and emission here is irrelevant. with that said, a perfect black body would be impossible because the radiation absorbed has to be emitted back at some point due to the exited state of the electron dropping down to a ground state. what i mean by this is that at some point, you are going to get all the electrons in their excited state, and then all they can do is just reflect further energy via emission. the way these objects work is that they have a large surface area and aren't smooth, so there are more electrons that can make contact with light. i may be wrong on that though so please no bully.
https://fas.org/sgp/eprint/teleport.pdf
Teleportation has been scientifically recorded in a controlled environment. Why does '5.2 Conclusion and Recommendations' say p-teleportation is unverified?
>China.
See section 5, 5.1, 5.1.1 and 5.2 in the pdf. It's a 5 or 10 minute read