Archived threads in /sci/ - Science & Math - 1538. page

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>>8203312
this is a pretty good one

>>8203312
Rotation

>>8203332

It's perfect.

Start building now.

>>8203297

>douchebags

Define 'douchebag'.

>douchebags prefer to wear leather jackets

This one, as douchebags exist without leather jackets, however this scenario leather jackets don't exist/aren't worn by anyone who isn't a douchebag.

As in, the wouldn't exist if nobody was ever around to buy them/wear them.

No.

>>8203297
The answer is both. There are myriad studies about how clothing, and specifically uniforms, affect human interactions and behavior within a given culture.

>>8202969
It's saying that the sum of 1/k from 1 to n is roughly ln(n) to zeroth order.

>>8202974

zeroth order?

>>8202979
n^0.
O(1).
A constant term.

They used to call it the meme drive.
Not sure what's changed.

>>8202701
But is it viable? I'm going to try and build one this week out of boredom.

>>8202696
XXI century Dean Machine

I took a class in it. What are your questions?

>>8202189
>/sci/tizens
Please no.

>>8202204
Sorry for the late reply.

Are you familiar with Getzen Proofs or Beth Tableauxs?

>>8202213
Sorry.

>>8201227
they weren't allowed to paint graven images, so all of their art is mathematical in nature. some of the mosques are extraordinary

They are underrated. Extremely important.

>>8201227
>How important were muslim contributions to mathematics?
Depends how much you consider algebra and the preservation of a lot of European mathematics important.

>>8199770
Enjoy making burgers for the rest of your life

>>8199770
Alright you fuck, your gonna have to spend hours and hours a day learning now to make up for your past.

You are probably going to want to start at algebra one, try khan academy, or finding pdfs of algebra one math books.

Before you get to college you must at bare minimum be through algebra 2 and geometry.


Alternatively become a welder and make a solid 50-90k a year.

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There is hope for anyone who is willing and prepared to intellectually invest themselves to self-learning. Start with the basics (see pic). Basic math is an absolute fundamental piece to read, and will help your mind re-coordinate to a more academic climate for future learning.

>>8201704
theology

>>8201704
evolution

>>8201704
global warming

>>8194879
It already did. The Earth would be a dead snowball without solar energy input.

>>8194879
No.
https://bravenewclimate.com/2014/08/22/catch-22-of-energy-storage/

>>8194928
Just save up water in hydro plants during daytime and price fluctuations will naturally encourage consumers and industries to use power when the sun shines.

You're looking at average speed over distance, while you should be looking at average speed over time. The average speed over distance is indeed 20mph (you travel equal distances 15 and 25 mph), but the average speed over time is lower.

The reason it's lower is because you spend less time traveling 25 mph, since it takes less time to cover the 5 miles. So the last half where you're travelling faster can't make up for the first half where you're travelling slower. Lower average speed means a longer travel time, hence the 0.5333 hrs you came up with.

The distance travelled is equal to the average velocity (over the entire trip), multiplied by the time. Since it takes longer to travel 5 miles at 15 mph, the average velocity of the trip is less than 20 mph

>>8203859
ninja'd

Why dude? We have 2 species on this planet co-existing at very different speeds. Women, being unable to evolve quickly are living a life twice as fast as men up to around age 40.
Men have slowed down, mature much much later and last well into their 90's.

Ask a 'chick'

>>8203640
Unverifiable

How would you determine whether one person's second was faster than another person's second? They'd both just say it takes a second.

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>>8203654
Damn, i didn't consider that.
Since you're born with it you couldn't be aware.
Buuut.. Couldn't exist a a way to verify it, i mean what if you make a comparison between 2 persons?
I know that both persons will see the same second in the clock, but couldn't you measure their reactions or something like that.
Of course i'm hypothetically talking about somebody that has a noticeable difference in his thinking speed in respect to a regular human.

>>8203430
Are you talking about the homomorphism of fundamental groups?

>>8203506
Yes, sorry

>>8203430
It's not. (the usual example of the reals and the circle).
It's injective, actually, because you can lift path homotopies. Look at the monodromy theorem.

>>8203420

Yes.

Now, go away.

>>8203420
>Would they ever become aware of space existing?
Would they have some form of navigation? A sonar, for example?

>>8203453
You baiting? And what I ment was that sonar won't work in vacuum, so they would have no way of gathering info from outer space, so they wouldn't know about stars. They'd have no idea about universe existing

Depends. If used for sheer escapism, yes. If they're a proxy for self discovery, to immerse yourself in another world, or whatever, in a way that adds to the total spectrum of thoughts and ideas your mind is composed of then no.

This is really too individualized to give an absolute answer, or even lay out a rough heuristic. Depends what you want and find valuable. I haven't played any video games in a few months and feel.. better, I suppose. Only because it broke many of my routines, habits, and mental cycles. ie, I would get real high on stimulants / anxiolytics and play some Unreal Tournament when stressed instead of just taking some deep breaths and focusing on something else. I would indulge and add to the addled state. Likewise, if I felt detached and half dead I might play Don't Starve or something for 20 hours straight and go to work in a subideal state.

Depends on a lot. I got into a habit of using games to modify or expand a given state. You cannot allow yourself to integrate things into yourself in that way. It will always lead to greater anxiety and overall flimsiness.

>>8202983
>what better thing can I do instead to relax
Take a nap. Go for a walk. Exercise. Read a book.

>>8202995
>If they're a proxy for self discovery
I manly use them to improve my communication skills(yes I know how pathetic it sounds)
>deep breaths
I do too but still can focus and just either read the same sentence over and over or want to fall asleep(usually after eating).
>20 hours
well i stay awake around 14 hours (9h sleep) since I understand how important is and I really care about it.

>>8202550
>Because blue has a shorter wavelength than red, it can send more information in one second unlike a red laser
This is incorrect. Shorter wavelength means that the information can be stored more densely on the surface of the disk. The laser itself is not sending any information at all.


As to your other point, the answer is no for multiple reasons.
1. gamma radiation produced by nuclear decay is isotropic, meaning it has no preferred direction.
2. gamma and x-ray radiation is high enough energy to penetrate solid matter with ease. Visible light is incapable of doing this, which makes it perfect for reading surface features like the BluRay disk. For this same reason, gamma radiation from radioactive sources cannot be collimated and turned into a laser.
3. You need a lot of light to read surface features. Even if you could use it for this purpose (you can't), radioactive sources don't produce that much gamma radiation and you would need a very strong source with a small volume. This would never me made available to consumers outside of government/high security laboratories.

>>8202550
If you had a gamma ray laser, you'd make more money selling it to the military, I think.

>>8202550
>>8202571

Same poster here. I would like to point out that if the atomic lattice properties of a surface could be manufactured such that it could store data consistently, soft x-ray lasers could be used to read the data. I don't see this as a viable way to store or read information though. Equipment like this is quite large and essentially useless outside a laboratory setting.