MAGNETISM is eludes me. I understand that opposite poles attract and that's about it. I study biology so that is the only concept I ever needed to know. I want a greater understanding of this fundamental force. What exactly is a magnetic field? What is behind charge? What the hell is going on in my picture here?
MAGNETISM is something that*....
magnetism is balancemagnetism is a way being equalmagnetism creates a force wall in chemistry you have a positive charge and negative charge (equal Proton AND Electron)in our planet earth its a way of creating a defense from the suns rays or you can call it solar wind (arua lights) and also helps with the theory on sea floor spreading, people study rocks for earth magnetic field Comment too long. Click here to view the full text.
magnetism is balancemagnetism is a way being equalmagnetism creates a force wall
in chemistry you have a positive charge and negative charge (equal Proton AND Electron)
in our planet earth its a way of creating a defense from the suns rays or you can call it solar wind (arua lights) and also helps with the theory on sea floor spreading, people study rocks for earth magnetic field
Ok, i need some help, /chem/.If I were to have a tank of water with a hole at the bottom, which has a plug that can be pulled up, and a plastic tube is connected to the hole, but the tube runs up above the tank, what is the optimal size of the hole/tube i would need to maximize the amount of water i could get to go through the tube and out the other end when i pull the plug?
Ok, i need some help, /chem/.
If I were to have a tank of water with a hole at the bottom, which has a plug that can be pulled up, and a plastic tube is connected to the hole, but the tube runs up above the tank, what is the optimal size of the hole/tube i would need to maximize the amount of water i could get to go through the tube and out the other end when i pull the plug?
Fuck I hate you /chem/.THe tanks water level will align with the tubes water level, NOTHING else will happen.
Fuck I hate you /chem/.
THe tanks water level will align with the tubes water level, NOTHING else will happen.
>>29286This.>>29270That's not so much because it's a liquid as it is under pressure
>>29286This.
>>29270That's not so much because it's a liquid as it is under pressure
YOU JUST TOTALLY CREATED THE PERPETUAL MACHINE!!!!!!
>>29343come again?Seriously, what do you mean?
>>29343come again?
Seriously, what do you mean?
>>29344he means that if OP were actually correct in what he said his tank design would do, it could be made into a machine that would produce infinite energy
>>29344
he means that if OP were actually correct in what he said his tank design would do, it could be made into a machine that would produce infinite energy
Fuck I'm so stressed out. I need to apply to grad schools and I just have no fucking time to do these stupid applications!Every class decides that I need to read 3 scientific papers a week or a whole book and analyze it critically and read journal articles that I don't care about for this stupid fucking critical writing class. I feel like I'm going to get an ulcer (inb4 ulcers aren't cause by stress, I know). Not to mention I have my Biochemistry GRE on Monday, and a take home exam this weekend.People just won't leave me the fuck alone about this shit. I don't smoke weed and probably never will, but I just need something to chill me the fuck out. Anyone else out there feel like this, or going through something similar.
Fuck I'm so stressed out. I need to apply to grad schools and I just have no fucking time to do these stupid applications!Every class decides that I need to read 3 scientific papers a week or a whole book and analyze it critically and read journal articles that I don't care about for this stupid fucking critical writing class. I feel like I'm going to get an ulcer (inb4 ulcers aren't cause by stress, I know). Not to mention I have my Biochemistry GRE on Monday, and a take home exam this weekend.
People just won't leave me the fuck alone about this shit. I don't smoke weed and probably never will, but I just need something to chill me the fuck out. Anyone else out there feel like this, or going through something similar.
>>29230Get yourself in a class where you do the same but with real science. FUCKING HELL. CAN SOMEONE MAEK THE FUCKING ST00PID GET AWAY? FUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU.
>>29230
Get yourself in a class where you do the same but with real science. FUCKING HELL. CAN SOMEONE MAEK THE FUCKING ST00PID GET AWAY? FUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU.
>>293210/10
>>29321
0/10
>>29310He's required to? I know I've had to take bullshit classes like those my first and second year.
>>29310
He's required to? I know I've had to take bullshit classes like those my first and second year.
>>29310I took the class because I'm in the honors program at my school and they make us take upper level General Education Classes (GECs) . This was the only one that fit the category I needed and that fit into my schedule so I could do my research and take my mol gen classes. It's actually a really high level class, technically counted as a seminar in african american studies.>>29321Yea, I am already in classes like that. I'm in 2 graduate level mol gen classes: Model Organisms, and DNA Transactions in which we have to read at least a paper a week. For model organisms it's sometimes 1-2 per lecture, but you couldn't have known that so I won't yell at you or anything. It's all cool man.
>>29310I took the class because I'm in the honors program at my school and they make us take upper level General Education Classes (GECs) . This was the only one that fit the category I needed and that fit into my schedule so I could do my research and take my mol gen classes. It's actually a really high level class, technically counted as a seminar in african american studies.
>>29321Yea, I am already in classes like that. I'm in 2 graduate level mol gen classes: Model Organisms, and DNA Transactions in which we have to read at least a paper a week. For model organisms it's sometimes 1-2 per lecture, but you couldn't have known that so I won't yell at you or anything. It's all cool man.
sounds like to me that you overloaded yourself and yes this is possible. either that or your taking way to advance of classes that are not giving you the fun learning thrill but instead stressing you out wishing you life wasnt so demanding i often feel like "the pressures on" when it comes to life and i agree it sucks but ive come to the conclusion that i just get the case of the "what the fuck are you gonna do's" dude smoke it will probably make all those bio exams and papers much more interesting trust meeeeeeeee just dont go driving or something stupid if your new to it
sounds like to me that you overloaded yourself and yes this is possible. either that or your taking way to advance of classes that are not giving you the fun learning thrill but instead stressing you out wishing you life wasnt so demanding
i often feel like "the pressures on" when it comes to life and i agree it sucks but ive come to the conclusion that i just get the case of the "what the fuck are you gonna do's"
dude smoke it will probably make all those bio exams and papers much more interesting trust meeeeeeeee just dont go driving or something stupid if your new to it
chemistry seems boring and i cant seem to make it fun, ill even smoke a few bowls, crack open the book but still this subject bores the hell out of me. dont get me wrong i understand most of it, the problem is having fun with it. i cant even develop a mental picture on how it works. (it just is)my major calls for at least 9 different chemistry classes and i need to fix this before i shoot myself. any ideas?
chemistry seems boring and i cant seem to make it fun, ill even smoke a few bowls, crack open the book but still this subject bores the hell out of me. dont get me wrong i understand most of it, the problem is having fun with it. i cant even develop a mental picture on how it works. (it just is)my major calls for at least 9 different chemistry classes and i need to fix this before i shoot myself.
any ideas?
Hey /chem/Aspiring newbie chemist here. Is Bright Star's MDMA synthesis (or anything from Rhodium archives) an up-to-date guide to MDMA synthesis? It seems to be the most easily accessible resource but I've heard talk of the oils/other substances used becoming more regulated recently or something of that nature.Can anyone shed some light on this? Comment too long. Click here to view the full text.
Hey /chem/
Aspiring newbie chemist here. Is Bright Star's MDMA synthesis (or anything from Rhodium archives) an up-to-date guide to MDMA synthesis? It seems to be the most easily accessible resource but I've heard talk of the oils/other substances used becoming more regulated recently or something of that nature.
Can anyone shed some light on this?
>>29295Chem major here. Busted by DEA in high school. Chemical sources are by far the biggest risk to clandestine cooks. Be VERY careful if you think you can become a kingpin of some kind.
>>29295
Chem major here. Busted by DEA in high school. Chemical sources are by far the biggest risk to clandestine cooks. Be VERY careful if you think you can become a kingpin of some kind.
>>29319Any details? I'm assuming you bought something that you shouldn't have and they knocked on your door? Was it the precursor or lab equipment?
>>29319
Any details? I'm assuming you bought something that you shouldn't have and they knocked on your door? Was it the precursor or lab equipment?
>>29319elaborate?
That picture is just awful.
It was a 50lb back of ammonium nitrate, if you must know.
I've been watching a lot of footage of the Saturn V rocket launches. What keeps a structure the height of a 36 story building being propelled from its base from falling over? Maybe its just because the rocket is so large but the thing looks like its not moving very fast at all for the first 10 seconds or so after liftoff. I have a freshman level understanding of momentum and physics but in the first few moments when the rocket is accelerating there is no momentum to be conserved right? What keeps the thing from tipping over? Is the propulsion just that uniform?
>>29256I hope you're kidding. All control is done by the AGC. There's something called an IMU(http://en.wikipedia.org/wiki/Inertial_measurement_unit) used in everything that requires orientation corrections. This would be the analogue part of the system. No computer can know orientation by itself.Here's the laughable part you present: you think the AGC that "provided onboard computation to support spacecraft guidance, navigation and control." doesn't actually control the spacecraft. What is it doing then? Turning on and off the engines? That could surely be provided by a much less complicated device. The AGC computes the required trajectories and adjusts the thrust output and direction accordingly through gimbal control.
>>29256
I hope you're kidding. All control is done by the AGC. There's something called an IMU(http://en.wikipedia.org/wiki/Inertial_measurement_unit) used in everything that requires orientation corrections. This would be the analogue part of the system. No computer can know orientation by itself.
Here's the laughable part you present: you think the AGC that "provided onboard computation to support spacecraft guidance, navigation and control." doesn't actually control the spacecraft. What is it doing then? Turning on and off the engines? That could surely be provided by a much less complicated device. The AGC computes the required trajectories and adjusts the thrust output and direction accordingly through gimbal control.
>>29264I've flown a simulation of the apollo program, or at least tried.That computer is nothing but a glorified calculator, all it does is give you numbers that tell you what to do with the controls.
>>29266That's what you're basing your assumption on? That's just plain wrong. In reality the astronauts didn't actually touch anything besides any extra systems switches on liftoff and most other important precise operations. Really the only things done manually propulsion wise were some corrections and docking of the modules. They input codes into the DSKY which was the interface for the AGC. These codes ran the programs to control the craft into orbit, then to the moon, then to an orbit around the moon.The lunar lander also had its own AGC that controlled the burn and heading on a preplanned course down to the moon. If you know anything about the first moon landing you'll most likely know Niel Armstrong took manual control of the craft just seconds before running out of fuel to avoid a rocky area.
>>29266
That's what you're basing your assumption on? That's just plain wrong. In reality the astronauts didn't actually touch anything besides any extra systems switches on liftoff and most other important precise operations. Really the only things done manually propulsion wise were some corrections and docking of the modules. They input codes into the DSKY which was the interface for the AGC. These codes ran the programs to control the craft into orbit, then to the moon, then to an orbit around the moon.
The lunar lander also had its own AGC that controlled the burn and heading on a preplanned course down to the moon. If you know anything about the first moon landing you'll most likely know Niel Armstrong took manual control of the craft just seconds before running out of fuel to avoid a rocky area.
>>29266You were in space club in grade school too?
You were in space club in grade school too?
>>29320XD
>>29320
XD
This picture has gotten me thinking.Where is our species going? We're all mixing racially, socially, etc. and in a few hundred years we'll be a different looking species. Don't mean for this to sound racist or anything, it's just making me think about the next step in human evolution.Sorry if i sound like a tard, i just waked and baked.
This picture has gotten me thinking.
Where is our species going? We're all mixing racially, socially, etc. and in a few hundred years we'll be a different looking species.
Don't mean for this to sound racist or anything, it's just making me think about the next step in human evolution.
Sorry if i sound like a tard, i just waked and baked.
>>29287Wrong. Ugly people simple don't get left out of the loop. This isn't the African Serengeti where the lion with the most full and flashy mane gets the all the bitches to himself. We live in a world where everybody has a decent chance at propagating. There is no selective force against ugly people because they are plenty and they fuck each other and make millions of little ugly babies Beauty only gets you higher up in the social ladder, lacking beauty doesn't keep you from popping out babies like a machine gun..
>>29287
Wrong. Ugly people simple don't get left out of the loop. This isn't the African Serengeti where the lion with the most full and flashy mane gets the all the bitches to himself. We live in a world where everybody has a decent chance at propagating. There is no selective force against ugly people because they are plenty and they fuck each other and make millions of little ugly babies Beauty only gets you higher up in the social ladder, lacking beauty doesn't keep you from popping out babies like a machine gun..
>>29307basically, ugly people get uglier, hot people get hotter, smart people get smarter etc etc etcracist white people get whiter?non racists get 'greyer'?black racists get blacker?
>>29307basically, ugly people get uglier, hot people get hotter, smart people get smarter etc etc etc
racist white people get whiter?non racists get 'greyer'?black racists get blacker?
>>29311Now you're stepping into cultural evolution which is not as solid and predictable as biological evolution.
>>29311
Now you're stepping into cultural evolution which is not as solid and predictable as biological evolution.
http://www.badscience.net/2006/10/%E2%80%9Call-men-will-have-big-willies%E2%80%9D/That picture is stupid and idiocracy was a flawed film and you should all feel bad for giving these ideas credence.
http://www.badscience.net/2006/10/%E2%80%9Call-men-will-have-big-willies%E2%80%9D/
That picture is stupid and idiocracy was a flawed film and you should all feel bad for giving these ideas credence.
>>29334It seems like you think that Mike Judge (the creator of Idiocracy) took this theory seriously and tried to present it to the scientific world. It's an imaginary comedic situation and that's all it is: humor. 0/10
>>29334
It seems like you think that Mike Judge (the creator of Idiocracy) took this theory seriously and tried to present it to the scientific world. It's an imaginary comedic situation and that's all it is: humor.
Im taking it in the spring what the fuck do I do to not suck dick at it?
>>29302im A molecular biology major, and I have An A in ochem right now. fucking math is what gets me.
>>29302
im A molecular biology major, and I have An A in ochem right now. fucking math is what gets me.
>>29298Don't waste your time on trig and pre calc. I also thought I was awful at math and went through a precalc/trig text to prepare. It was pretty much a huge waste of time and effort. Other than manipulating algebraic expressions, solving quadratic eqs by factoring and completing the square, an understaning of trig via the unit circle (soh cah toa, sin^2+cos^2=1), virtually nothing you cover will be of value to you. Get a calculus book with a solutions manual and start working through it. You'll strengthen your algebra skills as you go and you'll have a leg up on the other students.
>>29314O shit. In that case I think I may just go buy the book then, and work through it.
>>29314
O shit. In that case I think I may just go buy the book then, and work through it.
OP: If your school is like mine, on the first test, they'll make you derive things the hard way (with limits). If you haven't taken calc before, this will fuck you over (like it did with me). Know that the derivitive of x^2 is 2x^1. The derivitive of x^3 is 3x^2, etc.
>>29253 Study
Can we have some discussion on Quantum Mechanics, wtf "Time" actually is and how it works (at least theoretically), and all this "10 (or 11) dimensions" crap? Even a little explanation on wtf String Theory is suppose to even mean would be helpful.Honestly I'm grasping at straws here. I just try reading this shit and it seems like they're pulling it out of their ass with this crazy "all possible events in all possible universes" stuff, I have no idea how it actually applies to reality or my life. Am I actually going to live and experience all of those possibilities? Is time cyclic? Or are we just going to run into proton decay or a big ball of Fe56 and that's it, and there's no real possibility that we may "come back" in some sense (that is, considering an infinite variety of atoms and such being in an infinite variety of momenta and positions, eventually coming up with the combination which causes our "conciousness" or "mind" to arise from a similar brain again)? Comment too long. Click here to view the full text.
Can we have some discussion on Quantum Mechanics, wtf "Time" actually is and how it works (at least theoretically), and all this "10 (or 11) dimensions" crap? Even a little explanation on wtf String Theory is suppose to even mean would be helpful.
Honestly I'm grasping at straws here. I just try reading this shit and it seems like they're pulling it out of their ass with this crazy "all possible events in all possible universes" stuff, I have no idea how it actually applies to reality or my life. Am I actually going to live and experience all of those possibilities? Is time cyclic? Or are we just going to run into proton decay or a big ball of Fe56 and that's it, and there's no real possibility that we may "come back" in some sense (that is, considering an infinite variety of atoms and such being in an infinite variety of momenta and positions, eventually coming up with the combination which causes our "conciousness" or "mind" to arise from a similar brain again)?
>>29290Thanks a lot for taking the effort to explain little interesting pieces of information like this. I feel I understand the basic tenets of ST better now (which by that I really mean as in "I see what you did there").
>>29290Good post. I'd like to expand a bit upon time in the context of special relativity (SR) as I have come to understand it. Spacetime is a four dimensional "space." Everything in the universe travels through space-time at a constant speed, c, the speed of light. Light, which moves at the speed of light (in a vacuum) through space, does not travel through time at all. It is "timeless." A stationary particle (in a particular frame of reference) does not move through space, but moves through time at the speed of light. This is where the time dilation and length contraction of SR come from, I think. SR is a mind fuck of a theory that comes from two basic postulates: that the laws of physics are the same everywhere in the universe (for all inertial frames of reference i.e. viewpoints which are not accelerating) and that the speed of light is constant in all inertial frames. Comment too long. Click here to view the full text.
>>29290
Good post. I'd like to expand a bit upon time in the context of special relativity (SR) as I have come to understand it. Spacetime is a four dimensional "space." Everything in the universe travels through space-time at a constant speed, c, the speed of light. Light, which moves at the speed of light (in a vacuum) through space, does not travel through time at all. It is "timeless." A stationary particle (in a particular frame of reference) does not move through space, but moves through time at the speed of light. This is where the time dilation and length contraction of SR come from, I think. SR is a mind fuck of a theory that comes from two basic postulates: that the laws of physics are the same everywhere in the universe (for all inertial frames of reference i.e. viewpoints which are not accelerating) and that the speed of light is constant in all inertial frames.
>>2929010/10For some reason the Discovery Channel just can't summarize it like you did. Thanks a bunch.
10/10
For some reason the Discovery Channel just can't summarize it like you did. Thanks a bunch.
I have a related question, which is: is time a necessary condition for anything to happen?
Im glad I could help a bit. >>29313You're on the right track. Lemme see if i can expand on this a little bit. SR is the result of observations that no matter how fast an observer is traveling towards or away from a light source, the light will always be measured as traveling the speed of light from the observer's frame of reference (or from any frame of reference for that matter). This is a very odd phenomenon because we are used to the Galilean transformation we experience in everyday life. For example, let's say you are driving your car on the freeway fairly slowly. From your reference frame you appear stationary while the other cars pass you by at a few more miles per hour. If you sped up a little bit then the cars would appear to pass by you more slowly. This is not the case with light. No matter how fast you are traveling (compared to a stationary observer of course) you will always see light traveling at a constant speed. Comment too long. Click here to view the full text.
Im glad I could help a bit.
>>29313
You're on the right track. Lemme see if i can expand on this a little bit. SR is the result of observations that no matter how fast an observer is traveling towards or away from a light source, the light will always be measured as traveling the speed of light from the observer's frame of reference (or from any frame of reference for that matter). This is a very odd phenomenon because we are used to the Galilean transformation we experience in everyday life. For example, let's say you are driving your car on the freeway fairly slowly. From your reference frame you appear stationary while the other cars pass you by at a few more miles per hour. If you sped up a little bit then the cars would appear to pass by you more slowly. This is not the case with light. No matter how fast you are traveling (compared to a stationary observer of course) you will always see light traveling at a constant speed.
Dammit /chem/, I have been assigned a year long research project on a topic I know very little about (and I find it really boring). The topic is cardiovascular disease and my job is to find something directly or indirectly related to it and research it.Is there anything interesting that is related to cardiovascular disease that can produce a year's worth of research and an excellent presentation? I was thinking about researching whether stress and cardiovascular diseases are related, but I don't think there is enough information about it for me to be able to stretch it out over an entire year.
Dammit /chem/, I have been assigned a year long research project on a topic I know very little about (and I find it really boring). The topic is cardiovascular disease and my job is to find something directly or indirectly related to it and research it.
Is there anything interesting that is related to cardiovascular disease that can produce a year's worth of research and an excellent presentation? I was thinking about researching whether stress and cardiovascular diseases are related, but I don't think there is enough information about it for me to be able to stretch it out over an entire year.
amphetamine-abuse and CVD. You'll prolly find a tonne of info on that one.
I attended an awesome presentation linking obesity, medical imaging of gut fat, and heart disease last week. It was mostly to do with how we metabolize fat. turns out if you have a fat gut, it's better to have a high BMI (fat overall) than a low one (fat in your gut only).it'd be hard to research though cuz u don't really have any data to work with. I sympathize OP. I'm in computational physics, I can simulate all the data I ever need.
I attended an awesome presentation linking obesity, medical imaging of gut fat, and heart disease last week. It was mostly to do with how we metabolize fat. turns out if you have a fat gut, it's better to have a high BMI (fat overall) than a low one (fat in your gut only).
it'd be hard to research though cuz u don't really have any data to work with. I sympathize OP. I'm in computational physics, I can simulate all the data I ever need.
Do "mephedrone and cardiovascular diseases", as1) there are rumours that mephedrone is very cardiotoxic2) many people do mephedroneSo not only will you advance the field of toxicology (?), but you will also help like 10000 people (if not more) and will have an unlimited supply of mephedrone for the duration of the study
>>29306Well you've got my attention. Is mephedrone believed to be especially cardiotoxic relative to, say, cathinone?
>>29306
Well you've got my attention. Is mephedrone believed to be especially cardiotoxic relative to, say, cathinone?
Dude... CVD is the number one killer on the planet! How can researching this not be interesting? How about doing some correlative research on whether plaque in the carotid artery is indicative of plaque throughout the body (specifically the heart!).Diabetus and arterial atherosclerosis in the legs can be a good research topic. Seriously dude.... cancer is bogus, brains aren't well understood, and Cardiovascular disease is a relatively simple disease with great consequences... you got the good topic.
Dude... CVD is the number one killer on the planet! How can researching this not be interesting? How about doing some correlative research on whether plaque in the carotid artery is indicative of plaque throughout the body (specifically the heart!).
Diabetus and arterial atherosclerosis in the legs can be a good research topic.
Seriously dude.... cancer is bogus, brains aren't well understood, and Cardiovascular disease is a relatively simple disease with great consequences... you got the good topic.
Humans have landed on the fucking moon.Holy fucking shit I forgot how god damn awesome that is. Fuck man. Fucking fuck. That fucking alone is enough god damn inspiration to bust my nuts when it comes to science. Holy fuck. The moon out in the fucking sky.Fuck.
Humans have landed on the fucking moon.
Holy fucking shit I forgot how god damn awesome that is. Fuck man. Fucking fuck. That fucking alone is enough god damn inspiration to bust my nuts when it comes to science. Holy fuck. The moon out in the fucking sky.
Fuck.
/weed/
Hey anyone know the effects of the following drinks on cellular respiration.1.
Typical caffeinated soft drinkCoffeeRed bull5 hour energyVitamin water energyany explanations on how the chemicals in these drinks effect respiration would be greatly appreciated
any explanations on how the chemicals in these drinks effect respiration would be greatly appreciated
Caffeine doesn't affect cellular respiration directly, it works by blocking adenosine receptors in the brain, counteracting adenosine's (healthy) inhibition of the CNS which normally is part of what prevents you from tweaking out all the time
Taurine, another neurotransmitter, is also present in some of these energy drinks.It acts as an agonist of the glycine receptor, according to wikipedia.These drinks have sugar, well that should be an obvious one.VItamins are cofactors for a lot of enzymes...CO2 and water don't really do anything interesting.... and that's all I can think of. Comment too long. Click here to view the full text.
Taurine, another neurotransmitter, is also present in some of these energy drinks.It acts as an agonist of the glycine receptor, according to wikipedia.
These drinks have sugar, well that should be an obvious one.
VItamins are cofactors for a lot of enzymes...
CO2 and water don't really do anything interesting.... and that's all I can think of.
I'm not sure if this is right, but caffeine mimics the epinephrine pathway with increased concentrations of cAMP which activate protein kinases which activates glycogen phosphorylase which releases saccharide monomers into your system which are then rapidly "burned" away in glycolysis. In other words increased respiration.Double check with your biochem textbook.
I'm not sure if this is right, but caffeine mimics the epinephrine pathway with increased concentrations of cAMP which activate protein kinases which activates glycogen phosphorylase which releases saccharide monomers into your system which are then rapidly "burned" away in glycolysis.
In other words increased respiration.
Double check with your biochem textbook.