Archived threads in /sci/ - Science & Math - 214. page
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Is terraforming Mars to the point where there are oceans and foliage actually feasible, or just a popsci meme?
>>8005121
it's a meme
>>8005121
We can't even control our own climate yet
>>8005121
The latter.
It is not outside the realm of plausibility to get small oceans, the ability to go outside without a spacesuit, and some plant life, but Mars will always be cold and dry relative to Earth.
Consult Martyn J Fogg's Terraforming for an in-depth scientific analysis of the concept for an academic audience.
First time visiting this area, but I have a question; have any flat Earth proponents ever posted their beliefs here?
Anti-flat earthers are 1000x more annoying than flat-earthers imho.
Hey /sci/ i'm from /b/ i know most of you are geeks and almost fascinated by everything. Why don't we talk about time travelling? How is it far from reality, and do you have any theories about it? and how about parallel universe do you think there is a high chance that we also live in another planet with the same DNA as us but different history?
it is reality you are already travelling through time
>>8004239
Brilliant.
Welcome to /sci/. Unfortunately we must ask you to delete your thread since the only topics allowed here are: Barnett spaces, sum of all natural numbers, quantum consciousness and Norman Wildberger.
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Need help? Questions? Comments? miscellaneous etc.
>>8001984
Thanks
>>8001998
no problem
b u m p
u u . .
m . m .
p . . . p
Is /Sci/ ready to travel outside this world?
https://www.nasaspaceflight.com/2016/04/55-years-gagarin-ula-bigelow-present-commercial-stations/
>It only took 55 years to begin planning
>>8001847
Did the ISS inflate that module yet that SpaceX delivered the other day?
>>8002063
i don't think they've unpacked it yet even
i thought it was install week after docking
inflate some time after that
let astronauts in after a few months
throw away in 2 years
This doesn't sound great to me. This is a really vague "partnership".
I expected them to announce a firm launch contract for a BA-330 to definitely fly within a year or two. Instead they announced that an Atlas V had been reserved for a possible 2020 launch, which they apparently hope NASA will pay for.
The launch vehicle they're talking about using, Atlas V 552, doesn't actually exist yet. Like Falcon Heavy, it's a planned but undemonstrated configuration of an existing launch system. The dual-engine upper stage is planned to fly...
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Hi /sci/. I'm considering startin a polyphasic sleep routine. I'm considering doing either the uberman or the dymaxion cycle.
Does it work?
Is it healthy?
How do I go about it?
>>8006349
>Does it work?
No.
>Is it healthy?
Depends what you mean by healthy, it won't kill you, but I you'll be constantly exhausted.
>>8006355
How do you know it doesn't work? Have you tried it?
i feel like any of the weird sleep cycles are just memes. theres probably a great reason that we sleep the way we currently do
I've been trying to proven: [math]\lim\limits_{x \rightarrow 1} \frac{x}{x^{2} + 1} = \frac{1}{2}[/math]
Using just the following definition: [math]\lim\limits_{x \rightarrow a} f(x) = L[/math] if for every [math]\varepsilon > 0[/math], there exits [math]\delta > 0[/math] such that [math]|f(x) - L| < \varepsilon[/math] whenever [math]0 < |x - a| < \delta[/math].
I'm really bad at factoring so I'm having a hard time finding a [math]\delta[/math]. I got to this point:
[math]\left|\cfrac{x}{x^{2} - 1} - \cfrac{1}{2}\right| = \left|\cfrac{x}{(x...
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>>8005880
Is your denominator x^2 +1 or x^2 - 1?
>>8005900
[math]\frac{x}{x^{2}+1}[/math]
>>8005903
Do you see how your first step has an error?
Why when we talk about life in other planets/systems/galaxies we always say that they're probably very smart and advanced compared to us?
Why not to think that there's life out there, but they're dumb as fuck and weak? Like animals with no reasoning or something. I know is like cringy to think that we (the humans) are the most advanced beings in all the universe, but it can be possible.
![0e2bd6bb451bd5674b08aa81b1942cde[1].jpg](https://i.imgur.com/axTjLQv.jpg "0e2bd6bb451bd5674b08aa81b1942cde[1].jpg")
You'll regret those words tonight earth worm
https://www.youtube.com/watch?v=wsjhdoWKtXM
That's what sci-fi movies and books say, scientists usually look for water and microscopic lifeforms.
However if the contact was made the other way around (the aliens find us first) then it would make sense to assume they're more advanced.
>>8004728
>we always say that they're probably very smart and advanced compared to us?
You mean popular culture does. The reality is that we don't know what life will be like in other star systems. We portray the aliens as smarter and advanced because it makes for a more interesting setting when creating art (movies, books etc.).
What's the best calculator APP for smartphone that I can use to plot graphics on my calculus classes ?
>>8004490
wolfram alfalfa
Desmos
wolframalpha have a good app. you can access it via the web for free, or the app for a few quid. does graph plotting, advanced calculus including imaginary and real plots
Is there any reasoning behind the idea that people are born gay?
>>8003768
No, the jews put the gay gene in vaccines to destroy christian values and the white race.
I don't know man, the fuck kind on an answer are you expecting?
>>8003768
>reasoning
you mean facts?
>>8003768
No, just like all complicated phenotypes it's genes + environment + epigenetics.
I just came across this image on my friend's feed. He said it was from his exam earlier that morning. But according to my knowledge, arent the options given wrong?
>>8003706
wow what a piece of shit question
>undefined, highly specific parameters.. what the fuck is "near"
>tries to make the multiple choice hard by scrambling the answer, playing on your brain's shortcuts for memory, instead of offering three random false answers and testing if you actually have an idea of what the correct one is.
yes, all wrong because sqrt(g*r)
>>8003718
Not to mention
>Not even phrased as a question
In the current year, would it be possible to use miniature atomic explosions as a propulsion method for high-speed, long-distance travel?
The spacecraft could still leave the atmosphere using conventional rocket propulsion methods, so radiations won't cause issues in the surroundings, then last stage would use the atomic propulsion only. As alternative the spacecraft could also be launched from a station in orbit already outside of the atmosphere.
Thoughts?
>>8003637 (cont) or even an hybrid system that uses both conventional combustion and atomic "ammo" if the material of the spacecraft can't withstand pressure from the atomic explosions for too long. I saw a video once about a similar atomic-bases propulsion but I forgot the name of the project, does anyone remember that? the spacecraft had a plate on the bottom that acted like a spring, pushing the craft using the motion generated by the pressure of the explosion below, the explosions were originated by some sort...
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>>8003637
Project Orion
>>8003715
https://en.wikipedia.org/wiki/Project_Orion_%28nuclear_propulsion%29#Potential_problems
>Danger to human life was not a reason given for shelving the project. The reasons included lack of a mission requirement, the fact that no-one in the U.S. government could think of any reason to put thousands of tons of payload into orbit, the decision to focus on rockets for the Moon mission, and ultimately the signing of the Partial Test Ban Treaty in 1963.
Would it be possible to resume...
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so if the observable universe spans 100 billion light years from side to side.
How is it then possible to be only 15 billion years old?
Clearly hydrogen does not move faster than the speed of light.
space can move faster than light
>>8003427
good point.
>>8003441
i tried to find a way this makes sense but i couldnt find it.
even in a uniform expansion of everything (stellar) the speedlimit is violated.
Why in quantum mechanics we continue using integral if the energy is quantized? I mean, the assumption of continuous now is invalid
On the other hand, to find the electric field in in classical electromagnetism given potential and boundary conditions (which would be the equivalent to solving the Schrödinger equation in a potential) have to make the sum of all orthonormal functions, while mechanical quantum each function is a different value for energy. Do you have any connection with the foregoing that I just asked? What text I can better clarify my doubts?
>Believe that someone is going to answer that
Can you put this in the form of a frog meme?
>>7995680
>Why in quantum mechanics we continue using integral if the energy is quantized? I mean, the assumption of continuous now is invalid
Because of what is called the dual nature of elementary particle behavior. They exhibit both
discreet and wave properties. Waves tend to be "continuous".
>buy some shares worth $100
>as soon as it's worth $101 (possibly a few seconds later), sell and win $1
>if it becomes worth less than $99.90, sell and only lose $0.10
>do this 10,000 times
Tell me why this wouldn't work
>>8005323
>stock goes less than $99.90
>doesn't go back up
>NET PROFIT: - $0.10
>>8005323
> assuming that stock price will increase to $101
>doesnt know anything about exchanges
>doesnt know anything about economy
>doesnt know anything about laws
>doesnt know anything about rates
>doesnt know anything about anything
BUY LOW SELL HIGH AMIRIGHT GUYS?
