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/sci/ - Science, Technology, Engineering, and Mathematics

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Would you like to figure out and easy way Anonymous 22/07/07(Thu)04:55 No. 18291 ID: 838b0b [Reply]

File 165716253059.png - (13.87KB , 737x625 , 124.png )

to find the hardest thing to do in horology? What is the length and function of curvature of D?

Have fun, stupids

Anonymous 22/07/07(Thu)18:25 No. 18293 ID: 838b0b

Your image isn't accurate, are they supposed to be circles?

Anonymous 22/07/11(Mon)17:58 No. 18296 ID: 38f731

The problem is insufficiently specified.

Anonymous 22/12/26(Mon)06:27 No. 18425 ID: c9d146

File 167203247474.jpg - (75.45KB , 1024x577 , 00 (3).jpg )

Use parabolic arcs

Anonymous 17/08/28(Mon)20:04 No. 16539 ID: 269c1e [Reply]

File 150394348278.jpg - (28.69KB , 400x300 , bad-math-fotolia-29084487.jpg )

I'm hoping to return to college and do a second degree in math/a math related subject (ideally Computer Science). Unfortunately, I haven't done math in well over a decade, and when I did math previously it wasn't exactly the highest level math.

Can anyone recommend how I can best learn/re-learn/catch up to college level math and be ready and prepared?

12 posts and 3 images omitted. Click Reply to view.
Anonymous 18/01/22(Mon)10:08 No. 16618 ID: 2a858b

>the discipline from mastering arithmatic when used to master secondary school math concepts
So please explain how arithmetic helps you solve quadratic equations, or systems of linear equations.
Like, if I need to find the exact roots of f(x) = -sqrt(pi) * x^2 + e*x + 10, how does it help me to know how run a multiplication algorithm by hand?

Anonymous 18/02/09(Fri)23:58 No. 16622 ID: bee93c

which one

Anonymous 22/12/26(Mon)03:28 No. 18424 ID: c9d146

Do incredible math

Tesla battery and electric motor tech Anonymous 22/09/27(Tue)06:11 No. 18352 ID: 17717c [Reply]

File 166425190432.jpg - (3.77KB , 299x168 , download.jpg )

Imagine that tesla makes their power with steam engine demon motor technology but applied toward battery packs
Or was it the motor thing that connected the coils in the electric motor it has

Anonymous 22/12/26(Mon)03:25 No. 18422 ID: c9d146


I had a chance to see a Ford Mustang Mach-E up close today and speak with the owner. He bought a basic model for about $42,000 sticker, with a 250-mile range (a little light - 300 seems to be the "go to" number these days). But it was interesting to see.

Even as a base model it had a nicely stitched leather interior. And all the door and body panels fit properly and evenly. No trim pieces were falling off or loose. It had the build quality of a typical Ford - perhaps slightly better - and that is not a bad thing. Ford has made millions - billions - of cars since 1908. They seem to have it figured out.

It is about the same size and shape as the Tesla Model Y, which unlike the Model-X, ditched the troublesome and pointless "gull wing" doors. Given the bad press about those doors, I think they are not a selling point, but detract from the value of the Model-X. The big difference is in price - the Tesla Model Y is nearly 50% ($20K) higher in price - and there is a substantial waiting list to get one, too. The model X is more than double the price of a Mach-E.

If you need service for your car, well there is a Ford dealer in nearly every town in America. Granted, not all may have qualified mechanics (yet) to work on the electronics, but everyday items, such as body, trim, brakes, and whatnot, can be repaired at the dealer. Tesla? The repair centers are few and far between, and the wait times for parts and the difficulty of repair are legendary.

And this is just one product from one manufacturer. What will the EV market be like in 2023 and beyond, as nearly every automaker on the planet offers a line of EV models? Tesla has made big noises about its poorly designed (and embarrassingly named) "cyber-truck" which, like the Elio, is slated for production "next year" (every year). Meanwhile, Ford and Chevrolet are actually selling EV pickups, without fanfare or noise or hyping their stock price on Twitter. And despite the FUD, they probably will sell well for a niche market of users.

Tesla's P/E ratio is down from a staggering 1000 thanks to the collapse in share prices (investors are seeing the writing on the wall) to a still staggering 45 or so. 20 is a more rational target - either Tesla has to double profits or the share price has to drop by half to be rational, particularly in an era where Savings Bonds (Series I) are paying 6% or more for chrissakes. Ford's P/E ratio is down to less than 8, which means Ford is earning a staggering 12.5% on investment, and paying dividends to boot! The latter is something Tesla never has done and promises never to do.
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How dangerous are Mesa-Optimizers? Anonymous 22/10/23(Sun)19:02 No. 18371 ID: 1d8540 [Reply]

File 166654452279.jpg - (102.90KB , 1280x720 , maxresdefault.jpg )


Parasite Theory of Homosexuality Anonymous 22/11/18(Fri)15:16 No. 18386 ID: ce4ee1 [Reply]

File 166878097445.jpg - (432.05KB , 1936x1936 , 9b8f997b323c4b88.jpg )

I remember hearing about a theory that homosexuality is caused by intestinal parasites wanting to propagate themselves through gay sex.
Does anyone know anything about that? Is there any research on it?

3 posts omitted. Click Reply to view.
Anonymous 22/12/17(Sat)07:14 No. 18412 ID: 65265d

Homosexuals have a lot more butt-sex than heterosexuals. An anus-worm with the adaptation to cause homosexuality in its host will have an evolutionary advantage over an anus-worm that does not have that adaptation.

Anonymous 22/12/17(Sat)12:56 No. 18413 ID: 7d2104

What happens if this anus-worm enters a woman? does she become a lesbian?

Anonymous 22/12/19(Mon)03:28 No. 18414 ID: 0ae2b4

You're asking the right questions.

A Typical Elon Musk Day...but it could take place at another tech company. Mr Musk 21/05/22(Sat)08:10 No. 17563 ID: eed8a3 [Reply]

File 162166384182.jpg - (89.07KB , 1200x600 , locked.jpg )

A Typical Elon Musk Day...but it could take place at another tech company.

Telsa Software Developer: Good morning team, Elon did not like that it took his model S 17 minutes to get to the car factory from his house last month. So I built him a rocket ship. It takes 10 minutes off his commute and only burns $100,000 of fuel each way. Operations, we need a voice activated rocket landing pad on the factory's roof quickly as this is an expensive project.

Telsa Operations Manager: Hello sir, this is the first I heard of this, I just spoke to my engineers, and if you land that massive rocket on the roof, they are 100% certain the entire building will collapse, killing us all. Have a great day.

Telsa Architecture Manager: Team, we architected that elevated personal super highway for Elon last month it cost 90 billion, but I will see what else we can do. We do need a few months to think about rocket landing pads before designing the most elegant thing possible otherwise it will be too easy to implement, and we can't have that.

Telsa DevOps: We have an AI electric helicopter for Elon, it will take 5 minutes off his commute and does not use any fuel as it runs on solar power. We told quality control to look at the windshield, and it is bug-free literally. Give us 2 years and we can take another minute off of his commute by tweaking the helicopter pipeline.

Telsa UX: Sorry, DevOps, behavioral science tells us Elon likes rockets because of the little red on one on his childhood lunch box.

Data Science/AI Manager: Team, our predictive models show, If the rocket lands on the roof, it will take ~5 seconds, not 6 seconds, for the building to collapse and burst into a giant ball of fire. We are 99.3347534% sure of that, accounting for wind speed and 10,000 other variables. My PHD's do worry about sample size in our AI algorithms (Ivy league Doctorates worry about everything) ... so they are asking a few rich princes they met on the dark web to donate their spare space rockets for experiments. All we have to do is send each prince $100 dollars for rocket shipping and we can improve our machine learning by a factor of 6.43.
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SamanthaFix 22/03/02(Wed)11:16 No. 18169 ID: f9af09

I think he has a big future

Satan 22/05/02(Mon)22:35 No. 18265 ID: 108569

You stalking Elon Musk through his devices?
And Grimes is trying to kill him?

Anonymous 22/12/02(Fri)22:43 No. 18393 ID: 1c6e63

Youtube  >>17563
Strangely prophetic. And check this out! Doesn't get any more authoritarian-cultish than this.

Artificial sweeteners Anonymous 16/02/21(Sun)10:07 No. 16288 ID: f705da [Reply]

File 14560456503.png - (28.70KB , 787x653 , s.png )

Supposing a given artificial sweetener -- say, saccharine or aspartame -- was a carcinogen, what kind of cancer would it produce and by what mechanism?
If this question is too hypothetical to answer, by what mechanism would ingesting a non-toxic chemical cause cancer?

29 posts omitted. Click Reply to view.
sage sage 20/05/07(Thu)04:04 No. 16916 ID: 628398

> > Cancer is caused by some kind of mechanism damaging the DNA of cells on contact, producing a random mutation.
> That's like saying wounds are caused by insults.
No, it's more akin to saying wounds are caused by being clubbed.

> Cancer isn't just caused by mutagens for fucks sake, if that was the cause we would have cured cancer long ago.

Interesting conclusion, I was unaware we found a way to eliminate any possibility of mutations occurring.

Anonymous 22/02/03(Thu)03:16 No. 18094 ID: a5935d

Being caused by a virus isn't the same thing as being a virus.

The virus introduced mutations in the cells which - later - caused the cancer.

By inoculating against the virus you can prevent the mutations and therefore the cancer.

Anonymous 22/02/10(Thu)20:11 No. 18105 ID: be6f8f

I don't know if it's a virus, but some people's stupidity is definitely a disease, and we need some sterilization.

Anonymous 22/07/19(Tue)13:39 No. 18306 ID: 306736 [Reply]

File 165823076566.jpg - (15.74KB , 259x194 , 9k=.jpg )

Wait, isn't simulation theory viable? Because in our own universe we could easily create a simulation by simulating natural brain inputs using wires and electronics... Fed directly into the brain...

5 posts omitted. Click Reply to view.
Shaman 22/08/22(Mon)03:50 No. 18323 ID: 7eed0e


Shaman 22/08/22(Mon)03:50 No. 18324 ID: 7eed0e


Anonymous 22/09/04(Sun)12:54 No. 18332 ID: c1f548

Do you know how many theories are viable? The question is if there is a reason to assume they are true. There is no reason to assume we live in a simulation.

OPEN IT UP — Anonymous 22/08/28(Sun)08:29 No. 18328 ID: a6ed4a [Reply]

File 16616681894.jpg - (48.94KB , 800x534 , b.jpg )

US government to make all research it funds open access on publication
Policy will go into effect in 2026, apply to everything that gets federal money.

Anonymous 22/09/04(Sun)10:37 No. 18331 ID: e4696a

File 166228062686.jpg - (320.24KB , 1833x1099 , Ajuerucj2.jpg )

will US Govt release the blueprints for Grumman jets?

Anonymous 22/09/04(Sun)17:23 No. 18333 ID: dd09ae

File 166230503999.jpg - (215.73KB , 1080x1062 , 34tyq35h5.jpg )

Notice that all the vile shit that they're planning for the great reset won't be open access here. We'll get it way after the research on digital currency replacing the dollar and social credit to go along with the international justice system is in place.

Atmospheric absorption/scattering of sunlight Anonymous 18/07/27(Fri)04:35 No. 16685 ID: 953c1f [Reply]

File 153265890490.png - (96.72KB , 620x359 , solar-panels-australia.png )

Hey, /sci/. I'm running a simulation of solar panel efficiency and I need some way to calculate energy production from the sun's position in the sky. For example, assuming a panel that is always pointer at the sun, when the sun is closer to the horizon the panel will generate less energy than when it's high in the sky.

I'm looking for something like f(x radians) = y W/m^2.


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Anonymous 22/03/02(Wed)12:51 No. 18172 ID: bf7eac

Sorry to hear that. Try moving to a less shitty latitude?

SecondHand 22/03/02(Wed)15:22 No. 18174 ID: 765a67

You could try to find a climatic compromise, for example. Suppose you get solar panels power supply in summer and traditional electricity in winter. How about that? As for house darkness you can get to newmarket window replacement https://thwindowsdoors.com/newmarket-window-replacement/ and change your small old windows to multiple new ones. This will attract some extra light, I assume.

Anonymous 22/08/23(Tue)13:32 No. 18327 ID: 0d44b4

Get more solar absorbent material...

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