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82 comments displayed.
#5216
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stoneshit (01/08/2016) [-] 
I wanna start making things out of pewter I'd mix tin with lead . But there's a problem, mixing tin with lead can be hazardous. If I work with the alloy, hold it in my hands and such, can I get lead poisoning? I know that tin itself is perfectly safe, but the lead might be a problem. Now I'm not a chemist, but do the metals, in this case tin and lead, form a crystal structure?
TL;DR Is working with an alloy of tin and lead dangerous to health?
TL;DR Is working with an alloy of tin and lead dangerous to health?
#5213
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goobyman (01/07/2016) [-] HOLY SHIT GUYYYYYYYYYYYYYYYYS
WHAT DO I ASK FOR?
asking on some boards because i hope someone has a good idea
WHAT DO I ASK FOR?
asking on some boards because i hope someone has a good idea
#5214 to #5213
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mondominiman (01/08/2016) [-] Something to do with memes that way it can be reposted a shit ton
#5210
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cognosceteipsum (01/07/2016) [-] Is a paradox just a fluke of language or is it physically possible
#5207
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shadowmaul (01/05/2016) [-] does anyone know a way to relieve surgery pain? i just had minor hand surgury and it hurts terribly they said take tylynal but iv develpoed a resistance thats to constant pain relieve from headaches associated with krons disease.
any pain relief ideas would be greatly appreciated
any pain relief ideas would be greatly appreciated
#5199
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whitechino (01/04/2016) [-]
Someone who knows the deals... I understand it'll be a huge undertaking but who cares we're human and we can do whatever but can't we make rivers from lakes and oceans, long enough, maybe a water plant here and there, smart ways through natural rocks, and cave filters so we can get the salt out of it. California made rivers before from mountains. They can just make a long river from the Pacific. The Great lakes can have a river that goes down to maybe the Mississippi? At some point we're going to have to drink ocean water before it dries out too like Mars.
#5218 to #5199
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Fgner (01/08/2016) [-] Technically? Yes; practically? Not really.
1) California is a huge place, so obviously it's not going to be a couple small rivers. Worst yet, the agriculture California undertakes and absolutely refuses to minimize requires atrocious amounts of water. You'll need some fairly enormous rivers and a lot of the spread out across the state.
2) Desalination is a bigger bitch than you seem to think. If it was that easy to get pure water out of salt water, they'd just go to the ocean and use huge pipes to distribute it. Natural desalination isn't really suitable for industrial use, since we use so freakin' much so fast.
Using distillation is out of the question because meeting domestic needs alone (which is somewhere from <1% - 3% of the US water consumption) would increase our power needs by upwards of 10%. Irrigation of California would be closer to 30% of our water needs, so imagine needing to generate 100%, 200%, 600% more energy just to desalinate. Yeah... not really happening.
Reverse osmosis plants *are* possible. But California is one of the worst states for this, as it does have a fairly large environmental impact by killing coastal ecosystems and dumping enormous quantities of brine and heavy metals in the ocean. Also... it still takes a shit ton of electricity: 2 kWh/m^3.
3) Mars' surface went dry for other reasons. Primarily because the planet cooled down and it's magnetosphere thinned out dramatically. The water would evaporate and solar winds would jettison it out into space, the remaining water was absorbed into the ground Interestingly, Mars does still have a ground-water cycle, flowing water and everything, not to mention the ice caps. or reacted with other chemicals. If Earth's core cools and the magnetosphere leaves, we have significantly larger problems than water.
1) California is a huge place, so obviously it's not going to be a couple small rivers. Worst yet, the agriculture California undertakes and absolutely refuses to minimize requires atrocious amounts of water. You'll need some fairly enormous rivers and a lot of the spread out across the state.
2) Desalination is a bigger bitch than you seem to think. If it was that easy to get pure water out of salt water, they'd just go to the ocean and use huge pipes to distribute it. Natural desalination isn't really suitable for industrial use, since we use so freakin' much so fast.
Using distillation is out of the question because meeting domestic needs alone (which is somewhere from <1% - 3% of the US water consumption) would increase our power needs by upwards of 10%. Irrigation of California would be closer to 30% of our water needs, so imagine needing to generate 100%, 200%, 600% more energy just to desalinate. Yeah... not really happening.
Reverse osmosis plants *are* possible. But California is one of the worst states for this, as it does have a fairly large environmental impact by killing coastal ecosystems and dumping enormous quantities of brine and heavy metals in the ocean. Also... it still takes a shit ton of electricity: 2 kWh/m^3.
3) Mars' surface went dry for other reasons. Primarily because the planet cooled down and it's magnetosphere thinned out dramatically. The water would evaporate and solar winds would jettison it out into space, the remaining water was absorbed into the ground Interestingly, Mars does still have a ground-water cycle, flowing water and everything, not to mention the ice caps. or reacted with other chemicals. If Earth's core cools and the magnetosphere leaves, we have significantly larger problems than water.
#5220 to #5218
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whitechino (01/09/2016) [-]
Thank you for taking the time to respond. I'm just trying to imagine the future when I'm 70. By then hopefully I'll be in Canada fighting off Mexican Lizard people, with a bear glove with my dog named Coolleo.
#5224 to #5223
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whitechino (01/09/2016) [-]
At one point we're going to have that big tower Mordin died in. One in West Antarctica, Greenland, and the Coast of Japan. We're already making structures similar except they look like a bunch of big fans and air conditioners.
#5202 to #5191
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xsnowshark (01/05/2016) [-] Go to the religion board to discuss any kind of theism, this isn't the place for it. This board is for scientific questions and discussions.
#5205 to #5202
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thebritishguy (01/05/2016) [-] Sorry I was supposed to but I clicked on the wrong board by accident, I'll delete it.
#5196 to #5191
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whitechino (01/04/2016) [-]
Atheist can go to heaven. Just so you know, you're still in our hearts and ya won't know it till the end.
#5200 to #5196
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thebritishguy (01/04/2016) [-] I don't interpret the bible in that way
Revelation 21:8 ESV
But as for the cowardly, the faithless, the detestable, as for murderers, the sexually immoral, sorcerers, idolaters, and all liars, their portion will be in the lake that burns with fire and sulfur, which is the second death.”
Revelation 21:8 ESV
But as for the cowardly, the faithless, the detestable, as for murderers, the sexually immoral, sorcerers, idolaters, and all liars, their portion will be in the lake that burns with fire and sulfur, which is the second death.”
#5201 to #5200
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whitechino (01/05/2016) [-]
Jews go to heaven hence the 144 thousand, they don't believe in Jesus. You can't go without acceptance.
#5206 to #5201
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thebritishguy (01/05/2016) [-] Wrong board, sorry I was supoosed to post this in the religion board
#5189
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joeypie (12/31/2015) [-] Sooo... dont know if anyone uses this board but I need to start getting into current events. Can I have some trustworthy news sources ( not fox news or other bs like that)
#5234 to #5189
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phtholognyrrh (01/11/2016) [-] if you dont mind youtube based news, secular talk is a rational left leaning show; but thats a bit simplified. the host can be described as an anti-establishment, pro reason guy. its on the young turks network of channels, but he trashes on cenks bullshit all the time. he goes after corruption and bullshit, and is careful to differentiate between fact and opinion when he speaks
#5197 to #5189
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whitechino (01/04/2016) [-]
Al Jazeera News never let me down. And I also like Vice News, but sometimes they're just too white for me.
#5194 to #5189
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soundofwinter ONLINE (01/03/2016) [-] Try not to read just one but I'll give you a few
reason.com/ (libertarian leaning)
drudgereport.com/ (conservative leaning)
www.rt.com/ (russia leaning, obviously)
www.huffingtonpost.com/ (left leaning)
and the only bias free news in the world
www.xinhuanet.com/english/
Chinese state run media!
reason.com/ (libertarian leaning)
drudgereport.com/ (conservative leaning)
www.rt.com/ (russia leaning, obviously)
www.huffingtonpost.com/ (left leaning)
and the only bias free news in the world
www.xinhuanet.com/english/
Chinese state run media!
#5185
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asotil (12/29/2015) [-] Hey /science/ explain something to me because I'd rather annoy all of you than use Google because that's too easy
Impossible math problems/Theoretical Physics
Math should by no means be impossible, correct? The whole point is to say "Everything can be found". There is an equation, there is a formula, you follow the formula, here is your answer. There's many symbols and letters and dumb Greek bullshit sure but that doesn't change the fact that said problem had to be thought out, written, and and written specifically to adhere to a certain formula. Example, Y x 5 = 10. Divide 10 by 5, there is your answer. 20-10=10. So on and so forth. Now I can go figure out how to make my keyboard type out Omegas and Deltas and Pi and all that other dumb bullshit but I'd rather not so just think of something for me. All of these are completely doable because we have a formula for them. Unless I decide to just say "Hey what's 10+10?" to which you respond "20 asotil you fucking retard" to which I reply "lol no you dummy it's 69quingiglion XD" because I change the rules of everything mid equation, we understand how to get our answer. Even if I did change the rules, you read what they are and can still get the answer. So how do we get "impossible" math? Laziness?
As for Theoretical Physics, if shit can't happen/we do not have any basis to even think that this is the shit that may happen if something happens, we're effectively arguing Goku vs a fed Riven. "If this were to happen, then this would happen, then this then this then this then this and this would all lead to this." What is your basis for these assumptions "Theory." What's it based off of "Our current understanding of physics." How are we certain they'd apply to the thing "We're not." Where do our physics even fit into these assumptions "They don't" So what is the fucking point of any of this
I'll be real with you all I'm running a fever and have been dealing with the public 14 hours a day for the past 2 days at a deli right before a major snowstorm, my minds completely fucked right now and I barely even know what I'm typing but fuck it let's see who I can get angry at me for not knowing this shit
Impossible math problems/Theoretical Physics
Math should by no means be impossible, correct? The whole point is to say "Everything can be found". There is an equation, there is a formula, you follow the formula, here is your answer. There's many symbols and letters and dumb Greek bullshit sure but that doesn't change the fact that said problem had to be thought out, written, and and written specifically to adhere to a certain formula. Example, Y x 5 = 10. Divide 10 by 5, there is your answer. 20-10=10. So on and so forth. Now I can go figure out how to make my keyboard type out Omegas and Deltas and Pi and all that other dumb bullshit but I'd rather not so just think of something for me. All of these are completely doable because we have a formula for them. Unless I decide to just say "Hey what's 10+10?" to which you respond "20 asotil you fucking retard" to which I reply "lol no you dummy it's 69quingiglion XD" because I change the rules of everything mid equation, we understand how to get our answer. Even if I did change the rules, you read what they are and can still get the answer. So how do we get "impossible" math? Laziness?
As for Theoretical Physics, if shit can't happen/we do not have any basis to even think that this is the shit that may happen if something happens, we're effectively arguing Goku vs a fed Riven. "If this were to happen, then this would happen, then this then this then this then this and this would all lead to this." What is your basis for these assumptions "Theory." What's it based off of "Our current understanding of physics." How are we certain they'd apply to the thing "We're not." Where do our physics even fit into these assumptions "They don't" So what is the fucking point of any of this
I'll be real with you all I'm running a fever and have been dealing with the public 14 hours a day for the past 2 days at a deli right before a major snowstorm, my minds completely fucked right now and I barely even know what I'm typing but fuck it let's see who I can get angry at me for not knowing this shit
#5186 to #5185
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smudgiemuffins (12/30/2015) [-]
"Everything can be found" is a little vague. Consider the equation 1/x = 2/x. No real number satisfies this equation. You can look for one, but is impossible to find one. But perhaps you could "there is no solution" to be a solution, and fair enough. Most mathematicians would.
So perhaps you would want to change this statement to "everything that exists can be found." Fine, what now I wonder what you mean by found. Can I "find" transcendental numbers? I can refer to them, like pi for example. And mathematicians are happy to refer to pi without qualifying what it is. I can talk about the properties of pi. I can approximate pi. But I can't write pi down. An engineer can't make a beam exactly pi meters long. What is the solution to pi-3=x? Well it's... pi-3. But that feels a bit like cheating, no? I didn't "find" anything, I just restated what was told to me, that is: x=pi-3.
In mathematics, we can be a bit tautological in saying "the answer to this problem is the answer." That statement isn't incorrect no more than pi-3=pi-3 isn't incorrect. Pi-3 is just a form we're happy to have numbers in. In fact, I can always say "suppose A is the answer to the problem X. Then A is the answer to the problem X." Woo hoo, we solved all math problems... but, obviously not. So "real" mathematicians don't really often ask questions like that. They're more specific. "Can I answer this problem in this specific form?" "How many solutions does this have?" "What are the nature of this thing's solutions?"
So your question is now "can everything that exists be put in any form with arbitrary qualifications?" To which the answer is: definitely not. Certain differential or integral equations don't have solutions that can be expressed in terms of elementary functions. Some algorithms will not terminate and return the correct answer on all inputs. Sometimes shit is just really, frustratingly unsatisfying.
As for your physics question, I am unsure what it is you are asking. If you ask about an impossible event then theoretical physicists will not be able to tell you what would happen. If you want to ask about the outcome of a hypothetical scenario with different physical laws, go for it, but you better be damn rigorous about defining its mechanics.
So perhaps you would want to change this statement to "everything that exists can be found." Fine, what now I wonder what you mean by found. Can I "find" transcendental numbers? I can refer to them, like pi for example. And mathematicians are happy to refer to pi without qualifying what it is. I can talk about the properties of pi. I can approximate pi. But I can't write pi down. An engineer can't make a beam exactly pi meters long. What is the solution to pi-3=x? Well it's... pi-3. But that feels a bit like cheating, no? I didn't "find" anything, I just restated what was told to me, that is: x=pi-3.
In mathematics, we can be a bit tautological in saying "the answer to this problem is the answer." That statement isn't incorrect no more than pi-3=pi-3 isn't incorrect. Pi-3 is just a form we're happy to have numbers in. In fact, I can always say "suppose A is the answer to the problem X. Then A is the answer to the problem X." Woo hoo, we solved all math problems... but, obviously not. So "real" mathematicians don't really often ask questions like that. They're more specific. "Can I answer this problem in this specific form?" "How many solutions does this have?" "What are the nature of this thing's solutions?"
So your question is now "can everything that exists be put in any form with arbitrary qualifications?" To which the answer is: definitely not. Certain differential or integral equations don't have solutions that can be expressed in terms of elementary functions. Some algorithms will not terminate and return the correct answer on all inputs. Sometimes shit is just really, frustratingly unsatisfying.
As for your physics question, I am unsure what it is you are asking. If you ask about an impossible event then theoretical physicists will not be able to tell you what would happen. If you want to ask about the outcome of a hypothetical scenario with different physical laws, go for it, but you better be damn rigorous about defining its mechanics.
#5188 to #5186
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shiftur (12/31/2015) [-]
Saying x is pi-3 is a valid answer. We cannot write pi down to the last digit, but we know that pi is always the ratio of a circle's circumference to its diameter. You do not need to convert an answer to decimal form, saying the answer is approximately 0.14159 tells us a lot less than pi-3 would. Someone asks you what the golden ratio is, you do not say 1.62, you say 1 plus or minus the square root of 5 over 2. Despite the fact that you can never write down the exact amount, you just did.
#5190 to #5188
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smudgiemuffins (01/01/2016) [-]
Yes, that's how a mathematician would usually think. You missed my point. My point was that "impossible" is a pretty vague word.
But a problem like "represent the antiderivative of sin(x)/x in terms of elementary functions" is impossible. It has an antiderivative, but you can't represent it in terms of addition, multiplication, or composition of the functions you would have seen in high school mathematics. Is that the kind of impossible you want?
But a problem like "represent the antiderivative of sin(x)/x in terms of elementary functions" is impossible. It has an antiderivative, but you can't represent it in terms of addition, multiplication, or composition of the functions you would have seen in high school mathematics. Is that the kind of impossible you want?
#5177
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icameheretotroll (12/26/2015) [-] So I really am fucking terrified right now
so about two weeks ago, my hamster bit me.
it just died today
it really did not show any signs of rabies, it ate, drank water and as it usually did, gnawed on the cage.
I'm a hypochondriac, so I really get nervious, today I got a nosebleed and I'm fucking terrified that something might happen, can I get rabies? I don't live in the USA btw, I live in an area where rabies is pretty high, is there a chance that my hamster had rabies, how much time do I have for rabies shots?
please, fellow fjers, help!
I'm really terrified right now
so about two weeks ago, my hamster bit me.
it just died today
it really did not show any signs of rabies, it ate, drank water and as it usually did, gnawed on the cage.
I'm a hypochondriac, so I really get nervious, today I got a nosebleed and I'm fucking terrified that something might happen, can I get rabies? I don't live in the USA btw, I live in an area where rabies is pretty high, is there a chance that my hamster had rabies, how much time do I have for rabies shots?
please, fellow fjers, help!
I'm really terrified right now
#5179 to #5178
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icameheretotroll (12/27/2015) [-] how much of a fever are we talking about
I don't feel like I have it but I might
I don't feel like I have it but I might
#5180 to #5179
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icameheretotroll (12/27/2015) [-] I am not heating up, I've had several people check me
#5181 to #5180
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thumbfortrump (12/27/2015) [-] Well, not having a fever is a good sign. Also as your hamster is not a wild animal, the chances of it having rabies are very low. Nosebleed have a multitude of reasons, most of which are benign. Some people have very thin blood vessels in their nose, making them more prone to nose bleeds. If you have a lot pressure coming to your head, for example if you have your head down, you're also more likely to have nose bleeds. Cold is also another factor to take in account.
Rabies is neurological, so its your autonomous nervous system that is affected. The incubation time of rabies varies a lot, and 2 weeks is too short for it to show. So you can easily rule out nose bleed. You can get rabies shots until the prodromal phase starts. IF you had rabies, which I don't think you have, you would be in the latent phase right now, and you could still get your rabies shots.
Rabies is neurological, so its your autonomous nervous system that is affected. The incubation time of rabies varies a lot, and 2 weeks is too short for it to show. So you can easily rule out nose bleed. You can get rabies shots until the prodromal phase starts. IF you had rabies, which I don't think you have, you would be in the latent phase right now, and you could still get your rabies shots.
#5176
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mikeypooh (12/23/2015) [-] know how copyrights expired after 56 years but disney used lobbyists to expand it to like over 100 years? anyone want to talk about orphaned scientific breakthroughs that are still under copyright?
#5193 to #5176
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crlmsonhazard (01/01/2016) [-] We're living in the stone age due to a bunch of greedy politicians and lawyers? God I hate humanity!
#5166
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anon (12/21/2015) [-] I submitted a myth to discoverchannel for mythbusters, but I never got a reply and they never air it. So, what do you think?
Is laughter is the best medicine?
Laughing can boost one's immune system and, if we're assuming, the patient is with company who's trying to make this person laugh might also improve their immunity.
It's completely testable as well. A group with, lets say, the common cold were split into two pairs. One was given vitamin C pills and extra water/soup to drink. The other was given non-lethal dose of Nitrous oxide A.K.A. laughing gas.
But here's the lingering question; If this works, is it because supplements or a Placebo effect?
Is laughter is the best medicine?
Laughing can boost one's immune system and, if we're assuming, the patient is with company who's trying to make this person laugh might also improve their immunity.
It's completely testable as well. A group with, lets say, the common cold were split into two pairs. One was given vitamin C pills and extra water/soup to drink. The other was given non-lethal dose of Nitrous oxide A.K.A. laughing gas.
But here's the lingering question; If this works, is it because supplements or a Placebo effect?
#5182 to #5166
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atoaster (12/27/2015) [-] That's... kinda hard to test. Your group of people with the common hold would be hard to find, like 10 people with the flu? They'd have to be subjected to the same environmental factors and then it'd be hard to get an average base line as recovery times vary. Also, both groups should get the vitamin C and extra water/soup, so one could be the control. You're testing if laughing works, not whether it itself is better.
You'd have so many problems with laughing, and then it's just such a silly thing. You're taking a really kinda... "out there" methodology to cure a cold. With it being, like you said, a placebo effect, it'd be impossible to test. You can't "fake" a guy into laughing.
I'm just so lost as why you think that would be a good myth. Sorry if I'm all jumbled.
Also because Mythbusters is over. This last season will be the last season.
You'd have so many problems with laughing, and then it's just such a silly thing. You're taking a really kinda... "out there" methodology to cure a cold. With it being, like you said, a placebo effect, it'd be impossible to test. You can't "fake" a guy into laughing.
I'm just so lost as why you think that would be a good myth. Sorry if I'm all jumbled.
Also because Mythbusters is over. This last season will be the last season.
#5165
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crlmsonhazard (12/21/2015) [-] is it actually possible for humanity to move to Mars or Europa or are we gonna die here?
#5159
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shadowkingdr (12/19/2015) [-] So theres this asshole at my dorm who says hes black because his father was black, but hes a fucking ginger with freckles, is this possible or can i call him out on his bullshit?
#5158
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mikeypooh (12/19/2015) [-] are we sure that all prescription diet pills (fat burners or blockers) are as dangerous as we think they are? could it just be a scare or that people are just overdosing?
#5187 to #5158
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soundofwinter ONLINE (12/31/2015) [-] Diet pills make you lose weight in the exact same way that doing a lot of cocaine will make you lose weight. Not so good on your heart, especially if you're vastly overweight like the people who use them
#5160 to #5158
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shadowkingdr (12/19/2015) [-] diet pills by their nature are inhibiting one of the basic biological imperative's and therefore by trying to halt this is bound to cause problems, not to mention most diet pills are sold by little better then drug dealers who sell unsafe pills
#5154
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anon (12/18/2015) [-]
Is borax a safe way of getting the recommended intake of boron.
If the dose is right it shouldn't be toxic since its a salt should it?
If the dose is right it shouldn't be toxic since its a salt should it?
#5161 to #5154
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shadowkingdr (12/19/2015) [-] Borax is currently in the grey when it comes to toxicity so i really would not recommend doing it without further study, if you need boron just start chowing down on apples, they have a large amount of boron
#5152
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mikeypooh (12/17/2015) [-] i know multivitamins wont cure the common cold or cancer but do they actually work in the sense of giving you the actual vitamins and mineral on the bottle?
#5153 to #5152
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ieatbengay (12/17/2015) [-] in terms of the common cold they are much more useful for prevention than cure, they're pretty useless overall though, just eat some fruit and vegetables
#5156 to #5155
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ieatbengay (12/18/2015) [-] they do but you dont need a pill to get those nutrients
#5157 to #5156
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ieatbengay (12/18/2015) [-] >>#5155, and the nutrients themselves don't do much, a side effect that small could almost entirely be placebo (i.e. they could tell you it makes it you a better dancer and it might, even if it doesn't...)
