Archived threads in /sci/ - Science & Math - 53. page
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Easy problem solving thread
You are playing a game of Russian roulette where you load two bullets into consecutive chambers of a six shooter. Your mate pulls the trigger and it clicks, he is okay.
Do you pull the trigger again or do you spin it first?
I put the gun down and concede defeat
3/4 chance of not blowing your brains out without spinning, or 1/3rd with spinning. Obviously better without spinning.
>>8160961
Neither, you shouldn't play Russian roulette.
Pulling the trigger first seems more practical though.
Thinking about demonstrating the use of a separatory funnel for a class thing (speech class, not a chemistry class). Is there any combination of classroom-friendly solvents and solutes that will produce a nice visible result? Ideally I'd like two visually distinct phases, and a compound that will noticeably change the appearance of the phases during the extraction. I just can't think of anything offhand that will do the trick without involving some kind of gnarly organic solvents, toxic/expensive colored compounds, strong acids/bases, etc. Again, this is for a non-lab,...
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OP here. Would cooking oil be an option? Oil would definitely give me the visually distinct phases I'm looking for. Not sure about what my solute would be though. Also, this will be a borrowed sep funnel, so I can't gunk it up too badly.
>>8160949
Just give a speech on why it is ok to own pit bulls or some MMA fighter like everyone else in your class, you nerd. You're just going to confuse everyone and be cringeworthy.
>>8160966
The speech has to involve a practical demonstration. That's the whole point of it. Most of the practical skills I have are from chemistry class. Also, extractions are probably the most intuitive and interesting thing I could show them, especially when you can literally see the stuff moving from one phase to another!
It's a fair point, though. If this falls through I'll show them how to iron a shirt.
Are bionicles scientifically possible in real life? As in like how they are in the movies?
are you fucking 11 m8
>>8160902
bionicles were amazing. what a sick background story.
>are they possible in real life
kek
>>8160909
11 inches down your throat m8
CS or EE?
which one will let me help poor people and help develop my poor thirld world nation faster?
Or can I do both?
can we have an education general ? We seem to have a lot of questions like these
I'm kinda with you though man. CS is dope, EE is dopest. But, doubling on them would require you to be some kind of genius.
>>8160890
>college math is hard
>half the degree are meme humanities optional courses
>only 20 courses are core subject
>hard
>>8160894
nigger, double major EE and CS and show me your grades. It's not crazy hard math, but the work will be to much.
ITT: Tell OP why he's fucking retarded
>Space-time is curved
>In some places, it's infinitely curved
>These areas are what's known as black holes
>To an observer far enough away from a black holes influence, one appears the relative focal point
>The relative focal point as seen from the center of a black hole differs dramatically
>Any amount of space away from them, the...
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>>8160781
>In some places, it's infinitely curved
Until now I thought anything smaller than Planck length suddenly didn't make any sense - time and space drop entirely there.
>>8160819
Doesn't the asymptotic behavior imply infinity tho?
>>8160834
>imply
It shouldn't be about implication, it should be about proof.
![12963890_10157320197335131_8270093179166035461_n[1].jpg](https://i.imgur.com/YHxPoiQ.jpg "12963890_10157320197335131_8270093179166035461_n[1].jpg")
https://www.youtube.com/watch?v=-SRhuQji2nw
Real "reusable" rockets LOL
Leave space to the professionals.
>>8160692
He should go with this virus design.
It can land on most surfaces if the wires strong enough...
Even better.
Put dirt on the boat for a softer landing
put spikes on the ship.
Just one long spike. Or lotsa little ones.
Dart the ship into the boat like a spike.
last rocket ran out of liquid Oxygen a few feet above the deck.
He still has 2 used rockets to sell at a discount. 1 rocket to go in front of SpaceX HQ. 1 rocket to be studied.
>>8160692
like NASA or the USSR? the ones who blew up hundreds of rockets when trying to do something never attempted in human history?
I really don't know how to ask this without it sounding like a conspiracy theory, but how come the possibility of intelligent life once living on Mars is never discussed in the scientific community? We're constantly finding out new things about the planet and it's already believed that the planet was once similar to Earth anyway. I'm not a big science head, so would this be literally impossible or is it possible but unlikely?
Of course it's possible. People will tell you it's not if this thread gets any more replies, but you have to remember, these are people from a sub-Type 1 civilization who reached their conclusions about where life can and cannot occur in the universe based on observing only a small percentage of the organisms that have ever existed on only one single planet.
>>8160534
Further evidence for the conclusion that the life wasn't just basic?
>>8160626
thanks anon, great perspective
>>8160634
True, but aren't we already assuming that there is life on some of the Kepler planets based on the fact that they are similar to Earth? If Mars was also like that at one point I don't see how it's so far fetched.
Does anyone know how to make acid that can melt shit?
>>8160523
Concentrated bleach + Concentrated Hydrogen Peroxide.
Mixing them will make hydromethoxycarboxyl acid, which doesn't give off poisonous fumes and will melt stuff like a Dali painting.
>>8160523
You can buy it at some stores. You don't have to manufacture it.
>>8160532
mechanism or gtfo
For how long should I stay awake in order to die of sleep deprivation?
I've seen instances of people dying from only staying awake for 36 hours while others have succesfully kept going for multiple days. What's the secret?
[spoiler]And If I woke up pretty early this morning and want to stay up to see the Brexit results will I die?[/spoiler]
>>8160513
>I've seen instances of people dying from only staying awake for 36 hours
I don't believe this, can you give a source?
>>8160515
http://www.huffingtonpost.com/2012/07/18/diablo-3-death-chuang-taiwan-_n_1683036.html
Excuse the shit source, it was the first link I found about the story.
Turns out I was off by 4 hours but the point stands.
I had problems with insomnia in my late teenager years. I spent about 44 hours awake, and I didn't die AFAIK.
It's not something I would recommend tho. Things start getting pretty weird after about 24 hours. It starts to feel like real life is a movie you are merely watching.
Are there a benefit of consuming cannabis and his derivatives? Like oils and stuff
>>8160403
1. You get stoned.
2. If you get stoned enough you'll become stupid enough to believe that cannabis cures all diseases.
>>8160405
Dont forget:
3. You get stoned.
It is better than anything else you would take to to salve a hangover.
Dear /sci/,
Suppose that I've created an algorithm that will optimize an arbitrary small sequence of binary data (up to 1kb). This binary data can represent anything you want, from computer instructions, to DNA, to physical objects. The algorithm will recommend a sequence of bits which you then evaluate with a simulation technique of your choosing, and then you tell the algorithm how "good" of a suggestion that piece of data was. Based on your ratings of the different suggested data sequences, the algorithm will suggest a "better" sequence of...
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>>8160383
It is called supervised learning, dipshit.
>>8160470
That's not even remotely what this is. This is a global black box optimization technique for binary data. I'm publishing a paper about it, but I want to present some more applications.
>>8160383
Find the best pick-up line.
If cosmological redshift determines that a emitted photon will have a higher frequency than after it propagates for awhile, doesn't the planck relation tell us that the photon has lost energy? Where does this energy go?
I feel like there is a really obvious answer but I can't think of it....
Potential Energy
>>8160295
Learn what frequency means first.
Photons can travel through space without losing energy. Red shifted light looks that way because it's traveling away from you so the light waves 'stretch' out. It's not until that photon hits something that it gets absorbed
Sup nerds, I have a question about numbers and how they work.
When I was a kid people were like "a jillion isn't a number" but if numbers are infinite, wouldn't everything eventually be a number?
>>8160255
is "banana" a number? you seem to think it is.
>>8160255
there aren't infinitely many numbers.
there are only as many numbers as those we need.
>>8160255
>numbers are infinite
What's time?
>>8160137
time for you to get a watch
>>8160137
Maybe it is simply the representation of the manner in which our consciousness is simply a continuation of memory.Maybe it is simply the distance to decay or death. Maybe it is a dimension of space which we can not comprehend. I don't actually know either but i'm throwing some ideas out there.
>>8160137
Entropy
What are your thoughts on global warming?
The scientific evidence indicates that global warming is real, undesirable and is caused by human activity, but since I'm posting on a neo-Nazi website for low-functioning teenagers I'm obligated to say that it's a conspiracy by the Chinese to destroy the white race.
All the thoughts have bled from me and I can think no more.
Now it's climate change and not global warming, you silly
