Archived threads in /sci/ - Science & Math - 943. page

sweet blog post can you tell it again

>>8615559
Care to share more information?

Congrats. It's a shame /sci/ sucks now

>>8615456
>I want to know how to derive pic related.
thats a definition, there's nothing to derive

>Anyone know of a good quick book or set of lecture notes on group theory?
armstrong - groups and symmetry

>>8615471
>thats a definition, there's nothing to derive
>>not deriving your definitions
My professor who wrote his lecture notes based on this book defined angular velocity as the vector [math] {^A\boldsymbol\omega^B} [/math] such that
[eqn] \frac{^A \mathrm{d} \mathbf{v}}{ \mathrm{d} t} = \frac{^B \mathrm{d} \mathbf{v}}{ \mathrm{d} t} + {^A\boldsymbol\omega^B} \times \mathbf{v} [/eqn]
holds.

> Armstrong - Groups and Symmetry
Thanks. Will check out.
What's the prereqs?

>>8615497
'deriving' usually means you some work to get from one side of the equality to the other

if your definition is just given by the equality, there's nothing to derive

>What's the prereqs?
basically nothing

I thought it was neat.

pls buy my box

>>8615420
I saw it in my subbox as I am subscribed to that faggot from when I was in highschool but could not care enough to watch it.

What is it about? Maybe I'll watch it now that I am not doing anything. I mean, the name "Mindfield" could mean literally anything and that image just looks like artistic (read: autistic) nonsense.

That is exactly what they do. It's called staging.

Why can't we stack another stage on the rockets we have? Wtf?

Retards. No wonder we're not getting to Mars anytime soon

>>8615088
>>8615091
Look at "pic unrelated" you stupid fish.

>>8615057

Hardware is still way too shit compared to biological organisms.

We need physicists to continue to help push physical boundaries of compute hardware.

I think computer science will just be more easily accessible and easier to monetize. But, if we are going by that criteria, might as well get an MBA.

>>8615073
What do you think about advancements in quantum computing? Do you think they will enable digital systems that can rival human brains?

>>8615057
>dominance of physics
My sides.

How ass-blasted will the anti-Musk circle jerk here be when it's a success?

>>8614728
Hands-free goatse.

>>8614728
I don't understand why anyone would be anti-Musk

Shouldn't people cheer for every rocket program in the world to be as successful as possible?

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>>8614704
Normies play COD not Kerbal

Video games do not "rot your brain"

If you don't want "watered down physics" read a text book you fucking faggot

Videogames doesn't rot your brain at all...

I've been playing ksp for more than 100 hours and I recommend it to everyone interesting in space flights, orbital maneuvers etc... It's relatively easy to play and there is a lot of mods (realistic, new parts of real rockets, real solar system etc...)

A really good game I can only recommend

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>>8614711
I've already read all the textbooks

>>8614504
Never too late. Start by getting your mathematical foundations up to par (for now, up to differential and integral calculus) and learn the equivalent of physics 1 and 2 using the syllabus of a university. Once you brush up, go to a college to get your two-year because it's much cheaper there and transfer to a better university. Make sure you take good courses that exemplify your talents and desire for your major.

>>8614573
>and learn the equivalent of physics 1 and 2 using the syllabus of a university

Or just read the textbook and do the exercises.

>>8614504
>nuclear engineering and astrophysics

These are dead ends with no jobs.

>astronautics

Enjoy unemployability after finishing your first and final project.

>electronic engineering

Unless you do analog, 90% of the work will be programming micro-controllers.

>>8614573

Thanks for the advice. I've been self teaching coding and networking basics purely out of interest and possible entry level work that's not using my back. I'll switch my focus to maths and trawl some uni textbook sites/torrents. I simply cannot go to university though, not even 2 years. Fees and living costs, even deducted from assumed part time work during, would take me the best part of 20 years to save for at my current pay rate.

>>8614592

I realise most of it is far from the avenue of superb job prospects. I am however very open to compromise in terms of something related to my interests/passions and something that will pay the bills. I think Nuclear Engineering can have good job prospects but it is very much dependent on where one lives.

>90% of the work will be programming micro-controllers

I'd be quite content with that.

>>8611732
Only if n=1 and/or p=0

>>8611732
He doesn't know

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>tfw to intelligant too publish my proof that P = NP
mankind is not ready yet

Why would anyone want to take pictures of the Earth from a geostationary orbit? It's a long way away, and you only get to look at a single spot. Placing cameras in LEO is better in every possible way.

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>>8610848

You dont think that anyone involved in funding the launch of these sats wouldnt be intersted in getting a picture of the earth from pic related vantage point???

How much is a shitty camera? 100 bucks?

jesus christ

>>8610841
You know, satellites do not exist for the purpose of convincing flat earthers. Sane people usually already got it.

>>8610853
Well you can't just use a "shitty camera". It needs to work in fucking space. It's also not like you can just strap it to the satellites and that's it. It demands some engineering to power it, to process the pictures it makes and then send those pictures back to earth. If your satellite is supposed to something else entirely, then that's not something someone will do in his free time, because why not.

Despite that, here you go
https://www.youtube.com/watch?v=cVzl9Dqg2o4

>>8606858
I'd tell you but I'd have to kill you.

>>8606858

You should go into tech consulting if you want to find out more about that subject.

The budgets are much, much bigger for national projects, so the tech (not sure about science specifically) is amazing.

Data centers being spun up, drones intercepting phone calls, and all that other cool shit that has been brought to the attention of the public after Snowden caused a stir.

remember Tesla anti-gravity, wireless free energy?
welp, they achieved that back 100 years ago

remember The Jetsons (fusion power, antigravity)?
welp, they achieved that back in the 60s

remember Back 2 Future (fusion power, time machines, antigravity)?
welp, they achieved that back in the 80s

>>8604987
Casaba howitzers and bomb pumped x-ray lasers.

>>8604987
1: Smart ballistics/missiles. Things that can maneuver on their own and avoid countermeasures while having countermeasures of their own. Payloads can be mass or nukes. But the nukes are only for frying crew with radiation, not much else.

2: Micro railguns.

There's not much else you can do without overheating. You can't hide. You can see everything. You can avoid pretty much anything you can detect. Thus, the smaller and faster the projectile the less likely it is to detect and avoid in time. Lasers don't work very well due to the amount of heat they create on your ship.

>>8604987
>long range
Lasers for burning off communication equipment and other hull structures. Or even puncture the hulls, depending on how strong we can build lasers with current day reactors.

>mid range
Missiles. Maybe even nukes if you can afford it. EMP attacks might also be a good idea, depending how much money you can afford against shielding, might affect your own ship too though.
Good old Flak
High Mass Railguns. It's hard to defend against huge rocks with high relative velocity.

>close range
Hull breeching drones
Rotary (gatling) guns for shooting down missiles and drones

>>8618544
>help me keep a medschool worthy GPA
I was going to help until I read this. Medschool plebs are legit retarded and no one on /sci/ deserves to have their time wasted by you. Go to /adv/, you halfwit.

>>8618544
Kill yourself

>>8618546
I didn't get into med school; the post

[math]
U=\frac{cosx}{}\frac{1}{sinx}\frac{1}{tanx}\frac{1}{cosx}\frac{1}{sinx}\frac{1}{tanx}...\\
U=\frac{cosx}{}\frac{1}{sinx}\frac{cosx}{sinx}\frac{1}{cosx}\frac{1}{sinx}\frac{cosx}{sinx}\frac{1}{cosx}\frac{1}{sinx}\frac{cosx}{sinx}...\\
U=(\ \ \ \ \ \ \ \ 1\ \ \ \ \ \ \ \ )
(\ \ \ \ csc^2x \ \ \ \ \ )
(\ \ \ \ csc^2x \ \ \ \ \ )...\\
U= \lim_{s \to \infty} csc^sx
[/math]

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>>8618257
[math]\prod_{n=1}^{\infty}\left(\frac{4n^2}{4n^2-1} \right) = \left(\frac{2}{1} \cdot \frac{2}{3} \right) \left(\frac{4}{3} \cdot \frasc{4}{5} \right) \left(\frac{6}{5} \cdot \frac{6}{7} \right) \dots = \frac{\pi}{2} [/math]

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>>8618305
[math]\prod_{n=1}^{\infty}\left(\frac{4n^2}{4n^2-1} \right) = \left(\frac{2}{1} \cdot \frac{2}{3} \right) \left(\frac{4}{3} \cdot \frac{4}{5} \right) \left(\frac{6}{5} \cdot \frac{6}{7} \right) \dots = \frac{\pi}{2}
also challenge to you brainlets to prove it using only the basic tools of calculus
-------------------

[math]\pi =3 + \frac{1^2}{6 + \frac{3^2}{6 + \frac{5^2}{6 + \frac{7^2}{\dots}}}} [/math]

>>8617979
It's a silly waste of space. They could have built a tiny library b/c of the book bot and used the money to maintain the facilities they already have.

>>8617979
Should I transfer to NCSU if I'm not majoring in engineering?

>>8618151
What major do you want to pursue?