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Archived threads in /sci/ - Science & Math - 176. page
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How many times a week should we shower?
Also, how many times should we shampoo?
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>>8302828
Showering is overrated unless you really need a full body clean for whatever reason. It's simply wasteful and can actually damage your skin. It's much better to target body parts as needed, ass, pits, crotch and teeth are notorious for needing daily cleanings to prevent smell. Treat hair as you would any other body part, if you find it gross then clean it.
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Science
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>>8302828
Theres no real answer. If you are dirty, wash

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So I'm a huge idiot and having just finished Obduction it made me realize I know nothing about number systems in bases other than 10.
Could somebody explain to me how other number bases work and why they exist?
I know that binary is used for computing but why?
What is the point of say base 4 or base 60 (which I am told inspired the 60 seconds to one hour and 60 minutes to one hour system we use?)
Remember I am a moron so explain it me as such.
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>>8302801
binary is used in computing because it's the only possible way to do computing
>this gate is off
>this gate is on
That's as complicated as you can actually get with circuitry, although ternary (base 3) computers have been proposed

>why do other number bases exist
that's like asking why different colors exist. they just do, and each one has its own way of being defined.
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>>8302801
In base 9 you count to ten then move to a new digit
0-9
10-9
20-9
Etc...
Is the same thing with other bases.
Binary is
0
1
01
11
001
011
111 etc...

For other bases, it's the same.
Computers use logic. True/false statements are physically generated using circuits, so binary is natural.

Bases are also useful for modular arithmetic, which is what you have with a clock, and used in encryption.
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>>8302815
>0-9
>10-9
>20-9
>base 9

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Anyone see the latest photo of Europa passing in front of Jupiter? Truly awesome.
>>
>>8302637
>believing in government conspiracies
OK
>>
>>8302642
Take that shit to /x
>>
>>8302642
Go the fuck back to /pol/

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Is this shit possible? I don't think so honestly. But what does /sci/ think? Can you build one?

Picture related, it's called the "solar express"

A concept on a train that would hurtle through space nonstop. Never decelerating at all. Using various small ion thrusters and the gravity of large celestial objects to adjust or change course.

>>
>>8302560
better have some retardedly good brakes
>>
>>8302577
it doesnt stop, so it never needs brakes thats the idea. It would meet up with smaller vessels to pick up and drop off.
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>>8302560
Why, specifically, do you think it wouldn't work?

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How much energy would be needed to compress a cubic meter of water into a black hole?
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>>8299820
What is the minimum mass of a black hole?
>>
>>8299820
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>>8299840
My mom is about a cubic litre of ash.

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>professor includes memes in their powerpoints
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>professor calls abstract diagrams 'cartoons'
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>>8299794
>prof shows a humorous video clip from a TV show
>awkwardly attempts to link it to the subject of the lecture
>>
I like it when they do that and when I'm a lecturer I'm going to do it too. Sorry bros :^)

What fields of science are on the brink of revolutionary changes
>inb4 some sperg says math
>>
Sociology
>>
>>8299670
genetics
>>
Math

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The other day I had a discussion with a SC student, said that Godel's incompleteness theorem showed that science was limited.

Why compufags and mathfags pretenten talk about science when they know almost nothing? Especially compufags.
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>>8299023

Because they know more than you.
Especially the mathematicians.
>>
wtf is SC?
>>
>>8299036
la science computationnele, pronounce with a heavy American accent

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>its a brainlet doesn't do cardio for cognitive benefits but claims he's smart and enlightened episode
>>
In my experience, it doesn't help

It's better to spend that time studying
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>>8299005
Brainlet detected. Do you spend every hour studying? No.
>>
>>8299005
>I can't spend 20 minutes a day relaxing because im such a brainlet that I can't study piece by piece daily
>yets somehow I have time to browse /sci/

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Let's talk about math education in the U.S. In particular, lets discuss high school math education.

Positives?
Negatives?
>>
Americans don't learn math, why else are they so fat from drinking a lot of soda and eating a lot of GMOs? Americans ruin everything.
>>
You guys literally just won the Olympiads.
>>
As a European, honestly, it's fine. The biggest problem is the way it seems to be ever more adapted to the lowest common denominator. But the curriculum doesn't seem to civer anything less than European schools (save from maybe some analytic geometry and matrix algebra?).

Both European and American schools seem to fail in motivating students for maths, though I guess it's more of a cultural issue

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Why is this new planet such a big deal? We are finding this habitable planets every week. Is it because it is so "close"?
I mean, we didn't even get yet to Mars and they are already talking about how it will be Earth 2.0
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>>8298277
Because it is the closest exoplanet.

If we dumped the entire world's GDP into it. We could actually travel there in a human life span.
>>
>>8298277
It's not about going there nigguh, it's about being able to get data since it's close.
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>>8298282
you are deluded
no amount of money in the world will prepare you for the hell that is interstellar space travel
there are literally a trillion variables to consider all of which want to kill you to death

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Can you explain, /sci/?
>>
>there's no number that when multiplied by itself equals a negative number
only true in the reals

>sqrt(-1)
not a real number
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>>8297791
I stopped caring about math when I was introduced to the concept of imaginary numbers. What a crock of shit. If your equation can only be solved by inventing numbers that can't exist, like some kind of math deity , then you are fucking wrong and the math is flawed. Same for algebra solutions that basically say "the correct answer is whatever the correct answer is". Thats what the math said transcribed to words but god forbid if i wrote in down in english instead of the ancient math runes the teacher...
>>
>how can the letter X exist when there is no letter that comes after W and before Y?

Microsoft Excel blamed for gene study errors but why in the hell are so called "smart people" using Microsoft Crapware like Excel? That is like operating on the brain with a rusty chainsaw.

http://www.bbc.com/news/technology-37176926
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>>8297224

Excel is overused and misused everywhere because it's very easy at first. So people both in business and in the sciences take the easy way out only to be fucked a couple years later when Excel becomes the worst, least convenient thing they could've built their processes around. Programming and SQL backends in contrast are less easy at first (i.e you have to write it all yourself instead of clicking on pictures like an infant) but make everything super-convenient to work with down the road for years to come.
>>
>>8297224
Maybe it is that Excel has like 15 or 30 digits precision and probably a bunch of rounding errors adding up along the way could have messed up the final result.
>>
>>8297224
scientists dont use excel
biologists though...

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Engineers are not true scientists.
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>>8296257

Yes they are.
>>
Why not?
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>>8296264
They don't produce any knowledge, they dont construct any theories, they don't seek to find laws in nature.
They merely apply the knowledge generated by true scientists. Which is something that any common man do today; the only difference is engineers are highly specialized in doing that.

In this sense engineers are more similar to artisans than to scientists.

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>tfw aliens with advanced technology exist but none of them want to visit us because we aren't impressive enough
>>
implying we wouldn't always be like ants to them

ants build relatively complex systems. keyword relatively. Do we admire their work, though? No, we see them as minor animals. Same with bees, and going up the ladder this can be applied to a couple of others in the animal kingdom.

aliens have no empathetic reason to establish peace with us. Ever. Not even if we create a Dyson sphere and master intergalactic travel
>>
>>8294865
>tfw aliens with advance technology exist
>tfw aliens made their equivalent of anime waifus real.
>tfw aliens are probably ending entropy by extending the life of this universe, and are basically biologically immortal.
>tfw these aliens probably have their own versions of a world creation kit and are gods in those things doing whatever they want, and sharing it with their own equivalent of the internet.

When...
>>
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>>8294889

>We figure out faster than light travel in the year 954,076 AD
>Find out we took longer than any other sentient species in the history of the universe to figure it out
>We are literally the dumbest sentient species of all time

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FRIENDLY REMINDER!

Since most of you are probably still in school, and some of you are starting college for the first time I have a friendly piece of advice

You can hundreds, yes hundreds buying them used online. My total book cost this semester was just $70. You can save a shit ton of money renting them from Amazon or buying them from places like Chegg and other similar sites. DO NOT BUY FROM CAMPUS BOOKSTORE! 73 replies and 10 images submitted. Click here to view. >> >buying books >ever Cuck. >> >>8294486 >using cuck >ever pleb >> >>8294486 It's personal preference, but I like being able to physically hold the book and flip through it. It's easier than having to scroll through a PDF or something like that. File: climate change.jpg (56 KB, 300x300) Image search: [iqdb] [SauceNao] [Google] 56 KB, So, what are we going to do about it? Plant tons of trees? 165 replies and 18 images submitted. Click here to view. >> Probably noting in the short term... anything that's expensive to respond to, treads on vested interests and won't materialize for a while isn't going to be taken seriously. When things start to materialize some form of drastic global climate engineering will be resorted to at the last moment. https://en.wikipedia.org/wiki/Climate_engineering >> >>8294196 Go suck a dick you retarded cunt. There are so many horrifying pollutants and you stupid bastards cry about carbon dioxide and "muh climate change". How about you swallow a bunch of seeds and shoot yourself you stupid fucker, this way you'll have zero emissions. >> >>8294196 >So, what are we going to do about it? Ignore it until it goes away. When 2100 appears people will laugh in the face of the fucking idea as we'll have better models and observations to totally demolish the retarded concept that contemporary hypothesises peddle. File: Sine_and_cosine_animation.gif (211 KB, 339x333) Image search: [iqdb] [SauceNao] [Google] 211 KB, Share your explanatory GIFs/WebMs. 102 replies and 42 images submitted. Click here to view. >> >> >> >>8293964 >>8293966 Nice Ok, with hurricane season underway, and Louisiana still up a creek sans paddle, I thought it'd be nice to start some serious discussion about that universal idle topic of conversation. Pretty much anything that's going on involving air and water on our little blue marble should be relevant, but PLEASE for the love of$DEITY avoid arguments about global warming/climate change, or /x/-tier tinfoil like HAARP and "chemtrails". Let's try to keep it concrete, practical, and empirical.

$\textbf{Bookmarks}$
Most of these are US-centric,...
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>>8290349
I'll give it a bump from /news/.
>>
>>8290761
Ok.

I'm actually preparing a forecast right now for hikers on the AT. I'll leave it with the bottles of water I usually deliver.
>>
Bumping with love from El Paso, TX. Its raining with a flash flood warning.

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If you don't like cats then you're missing out on some very effective stress relief to be quite desu.
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>>8298914
>feeling stressed
>stroke cat
>cat digs claws into my hand and bites me
>stress increases
>>
>>8298914
I'm allergic.
>>
>>8298970
I'm allergic and I have a cat.

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Is this accurate?
>>
>>8297276
bio is stamp collecting, yeah
I don't get what the others are saying
>>
>>8297286
The point is that biology is harder than chemistry which is harder than physics which is harder than math
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>>8297276
maths end is more about problem solving, bio end is more about learning

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Which one are you?
>>
the first one but not in all classes
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>>8300134
Me on the left

But in all honesty, somewhere in between.i reread my notes and do a problem or two of each type and then it's committed to memory and not going anywhere so I move on.

Some people study ridiculous amounts hut its just because they're fucking stupid or don't understand the material and have to depend on memorization rather than intuition
>>
Left in DiffEq, right in Physics 2

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OLD ONE @ 3HUNNA
>>
yo what is this board for
>>
>>8283685
Science & Math

Though engineering has its own board >>>/hm/ if youre interested
>>
Say you invent something /sci/ related and useful who the actual fuck do you talk to about it (other than /sci/) if you are outside academia and have no connections.

Can any biologist tell me why it's possible to crossbreed Lions and Tigers, Horses and Donkeys, Dolphins and Whales but not Humans and Monkeys?
>>
>>8293491
Genetic distance.
>>
>>8293491
Humans and the other Great Apes (monkeys? come on man... i know this is a bait thread but jesus christ) diverged far too long ago and are now too genetically distinct.

Horses and Donkeys are extremely close, Lions and Tigers not so much but still can be done... as for Dolphins and Whales, I never heard of such a thing and without googling, I wager you are making shit up at this point.
>>
>>8293496

https://en.wikipedia.org/wiki/Wholphin?wprov=sfla1

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wtf I hate math now
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>>8292617
Yes, a number larger than 1 multiplied by itself many times results in a large number while a number smaller than 1 multiplied by itself many times results in a small number. It's pretty obvious if you think about it for more than a second.
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So 2% extra effort over 365% days equals a number higher than 0% extra effort? wow
>>
${1.00}^{365}=1.00$

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Are computers making us (humans) stupid?

I started using Habitica, OneNote and Anki but now I'm paranoid it's making me more stupid, I don't know why.
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>>8298713
Did the wheel making humans stupid? What about the cotton gin? Point is, it's not making us stupid, but it is making us lazy.
>>
>>8298720
If it's making us lazy, what are the non-lazy alternatives to software? Writing notes on paper?
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>>8298720
>Did the wheel making humans stupid?

it increased the likelihood of obesity though

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What is the usual interpretation of $\mathcal{O}^2$, if $\mathcal{O}$ is a division ring?
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>>8298673
>>
>>8298680
ah, something to have with frice
>>
>>8298673
Yeah, that's very ambiguous.

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It's truly astounding that we're here. If some physical constants were slightly different, life wouldn't be possible.
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>>8298486
Math is beautiful.
>>
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>meanwhile in a universe where the physical constants are different
>"It's truly astounding that we're here. If some physical constants were slightly different, life wouldn't be possible."
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>>8298492

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How do you prefer to learn math?
>>
>>8298422
By suffering from any one of a number of cognitive diseases that disables critical thinking and social behavior.
>>
- What are the applications
- are they worth it
- do I have a mathematical Foundation that let me learn the content without doing too much research
- learn it if both yes
>>
by fuckin ur mom

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This isn't a religion vs. science thread. This thread has nothing to do with religion whatsoever.

This thread is about naturalism, the metaphysical view that natural things are all that exist.

If science has used methodological naturalism, and has been very successful because of this working assumption, wouldn't this be empirical evidence for naturalism?

Naturalism has straightforwards falsification criterion: if you can show one thing that isn't natural, then naturalism is false. Naturalism has never been falsified.

>Search...
>>
>>8298361
>falsification

popsci does not belong here. >>>/trash/
>>
>>8298363
Prove me wrong instead of posting /pol/-tier dismissals.

Or else get out.
>>
>>8298363
the ability of falsification is actually a classical criteria for distinguishing science from pseudoscience

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