Archived threads in /sci/ - Science & Math - 18. page
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How close are we to immortality and putting brains in robots really? I find very mixed answers about both.
Hypothetically, what would become of us if we just kept breeding and we all were immortal? Would we phase out breeding almost entirely and the same few billion people would continue living forever?
Sorry if this sounds like x-tier, uneducated garbage, but I'm actually curious about it.
>>8193947
>How close
When you will be at the end of your life, we will start to make the richest of us immortal. You won't make it.
>I find very mixed answers about both.
What are you expecting from /sci/?
>we just kept breeding and we all were immortal
Human hunting seasons
>>8194129
Well, I moreso meant I find mixed answers when I'm doing my own studying on the subject.
A lot of contradictions and baseless conjecture both ways
Not very. Realize the brain is dependent on a lot more from the body than just nutrients and oxygen. If you think otherwise, then cut out your thyroid, castrate yourself, and cut the adrenal glands off your kidneys. Then remove ~70% of your liver and induce scarring where your CSF drains.
Also, remove all your adipose cells, see how readily you can tell you're hungry. Also, adipose makes estrogen, which men need to an extent as well.
Etc. It's a ways off, if viable at all.
Does phenotypic variation exist between humans? If so, What role does it play in modern day evolution?
Yes.
You'd have to be blind not to notice phenotypic variation between humans.
>>8193810
No all 7 billion human beans look exactly the same.
Are you retarded?
Hello /sci can you give me any recommendation of books for basic electronics, im studying electronic engeeniering
>>8193513
The Art of Electronics - Horowitz and Hill
>>8193519
This. Heard it's the best biik around for electronics.
>>8193513
Our name is /sci/, get it right, newfag.
fixing co2 and methan (number 1 greenhousegas)
by fixing overpopulation. helping the nature to rebuild.
1) send rocket to asteroid-belt
2) rocket has robot who equips asteroids with little rocket engines
3) send asteroids to earth and let it go down on india & co
pros:
+ they would never figure out what or who hit them
+ maximum devastation
+ no radioation
+ its bio
cons:
?
any cons /sci?
no not my anime
>>8193426
If you can leave the rest unharmed, then yes
Nuclear winter is not good for animals and plants (food)
>>8193426
Who would man our call centres and provide technical support for retards?
hey /sci/
got a bug here i am not sure what it is, found a few crawling on a wall
asked about bugs here a few years ago so hoping you can help again!
Put a magnifying glass on it under direct sunlight to see it better.
>>8193404
it's wallbug
>>8193404
it is a penny you dimwit, just let it go and it will fall from the wall
Dear 4chan users,
try to find me with the message hidden in this image. We expect the message of a few curios individuals.
Greetings,
TheTowers
>>8193280
You're a gorilla, aren't you?
>>8193280
I'm not very curios, but I sure am curious.
Is the monkey going to use my banana as a banana?
Might this be real, /sci/?
>>8193202
Did you make this diagram yourself?
Because it doesn't make any sense.
Yep, it's one proposed possibility, but no one knows for sure. Another possibility is the heat-death of the universe, where the universe keeps expanding until nothing collides any more and everything is "dead" (ie. no further interactions at all).
But again, no one knows-- it's one of the great mysteries in physics.
>>8193202
No. The universe will continually expand forever, as far as we know.
http://map.gsfc.nasa.gov/universe/uni_shape.html
![Nanobots[1].jpg](https://i.imgur.com/7WNPDd4.jpg "Nanobots[1].jpg")
Are nanobots a possible thing that can happen or should we just call them cells at that point?
pls respond
>>8192854
Are you asking if people should call nanobots "cells" when they do not meet any of the structural criteria for actual being a "cell"?
It's 2016. It's time to admit it.
Do Black Holes really exist /sci/?
https://www.strawpoll.me/10702671
>>8192706
Amazing Atheist moving on to a new meme?
>>8192706
Is that Meth? Looks like Meth must be meth
>>8192706
Yes, because it's a well substantied, unfalsified hypothesis. Karl Popper don't lie.
Has this helped you?
>>8192571
It definitely kept me busy
>>8192571
Regardless of whether it did, the practice is better than no practice for developing an intuition.
Yes for physics
Post the best telescopes in the market. (Post the sites that you can buy them). And,if you want,show a picture of your.
any dobsonian is the best telescope in the market
as you increase its size, it becomes better and better
aperture >>> all
any 12" dob will destroy even the most expensive non-dobsonian telescope, regardless of what it is
and a 16" or greater dob is god-tier, you will be worshiped
Following. I'm thinking about buying one, but have no idea whats what
>>8192538
So if I have an excellent view from my balcony, I can stare into far away apartments, yes?
How much correlation do we need in order to establish a causation?
The Bradford Hill criteria, otherwise known as Hill's criteria for causation, are a group of minimal conditions necessary to provide adequate evidence of a causal relationship between an incidence and a possible consequence, established by the English epidemiologist Sir Austin Bradford Hill (1897–1991) in 1965.
The list of the criteria is as follows:
Strength (effect size): A small association does not mean that there is not a causal effect, though the larger the association, the more likely that it is causal.[1]
Consistency (reproducibility): Consistent...
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>>8191690
Has this all been verified for "man made" climate change? Not trying to be /pol/ here, just a curious layman question.
>>8191690
>Temporality: The effect has to occur after the cause
But doesn't special relativity posit that there is no absolute time? So you cannot impose a temporal order on events.
If you drop a high-mass object and a low-mass object at the same time, in a vacuum, they both fall at exactly the same rate. I've heard this said so many times.
But why?
Wouldn't the gravity of the more massive object combine with the gravity of the planet to make the massive object fall half a nanometer per second faster?
Or is something else happening that cancels out the respective gravitational values of the two objects entirely?
>>8191577
>Wouldn't the gravity of the more massive object combine with the gravity of the planet to make the massive object fall half a nanometer per second faster?
The "proof" people usually give for this doesn't even need to be TeXed up:
F = m1 a
F = m1 m2 G / r^2
by Newton 3 the forces must be equal so,
a = m2 G / r^2 (= g)
Which I guess makes sense in Newtonian mechanics, probably not in GR, but I don't know anything about GR so we'll wait...
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![video-undefined-22D1E93600000578-450_636x358[1].jpg](https://i.imgur.com/iBqs3Ig.jpg "video-undefined-22D1E93600000578-450_636x358[1].jpg")
https://www.youtube.com/watch?v=E43-CfukEgs
see for yourself
>>8191614
This doesn't show their acceleration values measured in the nanometer scale, though.
Can you deduce the color of a substance from only knowing it's chemical structure? How?
>>8191565
I'm no chemist but we had to memorize the color of certain molecules
If I'm not wrong: permanganate __ purple.
So its a question of seeing the elements in different experiments...
>>8191565
The complexity and size of the attached molecules bend light (refraction) to generate what we see as color. Bright and vivid colors tend to be from very complexly-chained compounds. Why simple chemicals are colorless (water, air, alcohol, vinegar, etc.)
>>8191580
Continued: This also means that compounds with the exact same molecules can have a different color. This is due to a different structure. Example: if the same chemical say H10SeC5Ni had two structures. One structure was a straight line while another was in the shape of a polygon. Both would be different colors (say orange and blue). The color depends on light hitting the compound then being refracted.
Why don't social science departments (particularly psychology) just employ full-time statisticians to assist with research design and data analysis on projects? This would greatly improve the quality of the research, and reduce the need for endless future replications with slight variations improving some aspect of the methodology and/or data analysis.
OP again, I'll try to explain why I think this.
I've just completed my MSc in Psychology, and I averaged 98% in my statistics modules this year, and had similarly near-perfect scores during my BSc. So I'm some sort of stats genius right? Wrong, I'm nowhere near. Trying to deal with real data, instead of the nice datasets they give you in tests, complicates things hugely. I still have no idea what I'm doing when I try to analyse the data for my dissertation. I'm sure that I'm making shitloads of mistakes, and I keep having to try and...
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>>8191548
>So I'm some sort of stats genius right?
Only if you studied in Europe and not grade inflated US memeschools.
>>8191550
I'm in the UK, and did my BSc and MSc at two different Russell Group unis. Not quite Oxbridge, but Top 10. To be honest I thought that students in the US might actually be more adept at stats seeing as their courses last longer and typically have a broader focus, but that's a complete guess.
