Thats the case to an absurd extent. For a psych undergrad degree here I needed to take a Statistics for Psychology but decided to take the stats class offered by the math department instead because I knew the Psych department one would be retarded. Unfortunately it turns out that take that particular course is required to graduate with the major so I'm taking it now. 2 months in the class is learning hypothesis testing and every chapter in the book has a section about keeping your hopes up, and even does things like assume you don't know what it means to square a number (multiply it by itself). The midterm was filled with questions like "if a datapoint has a z-score of 1.54 how many standard deviations away from the mean is it?" The standards are lower than I imagined possible for a college class.
As a "kid" still I'll say that almost noone really does that, its just way more convenient to send it over the internet when you want it. That being said if noone could download anything they wanted anymore thats exactly what would happen.
So comparing the two: 1)Battery in the car is charged off the power grid, then used to power an electric motor that turns the wheels. 2)Battery is charged off the power grid, used for electrolysis of hydrogen, H2 is then used to power an electric motor that turns the wheels (if we're talking about a fuel cell, which the article was). You're right it makes no sense.
The quote that caused this: "Our nanoparticle-coated electrodes make electrolysers efficient enough to provide hydrogen on demand from a tank of distilled water in your car."
On closer inspection, that guy isn't even saying that what were arguing about is a legitimate use of this technology, just that it'd be possible. He was definitely going for that implicit meaning though. It all makes sense now, it's just a cleverly worded statement meant to make the technology sound better to investors.
Ok yea, I see what your saying. The original energy to create the hydrocarbons came from the sun ages ago, this situation is different because we're creating the fuel (H2) in situ and it'll take extra energy to decompose the water, which has to come from somewhere. So even with the claimed energy efficiency of 96% we'd be draining the battery providing the current the entire time. The only way it could work is that you have the water tank and the battery, then drive the car around until you have to recharge the battery from some external source. So in using a ubiquitous molecule like water as the general fuel, then somewhere down the line burning fossil fuels to recharge the batteries the result is having to drill for less oil,etc since you only need a relatively small amount of it to keep the battery going. The ultimate energy saving would result because water is easier to get at and purify than hydrocarbon fuels and it is regenerated at the end of the process(while octane, for example, is not).
Ok I'm not really clear on how the hydrogen fuel will power the engine. BUt think about your gasoline run car now. You turn it on, the [i]battery[/i] makes the starter motor start going which starts the pistons moving which then compress the gas to high pressures until they cant help but react with the oxygen in little explosions (or add a spark to the process that comes from the battery power) which then pushes the piston back. Then the momentum from pushing the piston back is used to once again compress the next set of gas via the crankshaft. So to answer your question, the energy for hydrolyzing the water probably originally comes from the battery, after which the system will begin powering itself.
"MBA Jerks" are like the MPs of the educated work force, everyone else hates them because they dont directly contribute anything and are in charge of everything. IT, science, anything.
no its not, the only thing that could get passed on from parents to offspring would be a mutation in the dna of a germ cell line. So I guess if something happened that made a sperm cell out compete its sisters then that could be an instance of lamarckism, thats about it though. And you probably wouldn't even know it happened.
well you still have to research the obvious, because sometimes intuition is wrong. Ever hear the thing about how many times you would have to fold a normal piece of paper in half in order for it to reach the moon? Really guess. The answer is 42. And I'm not just saying that because its the answer to everything.
Right, and it seems like their making a false dichotomy between environmental factors and DNA replication "errors," one can lead to the other (well replication errors can lead to susceptibility). Think about your skin cells, people who spend alot of time outside end up with their skin adapted. Its not just upregulation of whatever leads to more pigment, there is actually competition going on amongst the cell lines, those that survive better start to spread. Eventually even the whitest person you know will have permanently darker skin (if it doesn't kill them first that is). Same with every organ I imagine.
Yea to me it looks like spectroscopy, except instead of first purifying the sample then dissolving it, its some sort of gas chromatography device that separates the different molecules for you (based on how much each type sticks to the walls), then you scan whatever absorption frequencies your looking for with the laser and compare the energy you detect with what the laser put out. Wherever there was absorption(depends on the frequency and molecule) will tell you what was in there by comparing the spectra with that of known molecules. The trick here seems to be that you don't have to prepare the sample at all, and they use a series of ultra-short laser pulses rather than normal em radiation in order to detect low concentrations easier. Cool idea.
Also hydro-peroxide is the name for a different molecule (actually class of molecules) than hydrogen peroxide, R-O-O-H vs H-O-O-H respectively. And I assume the nitrate/nitrate ions are either hydrogenated or they regulate the pressure and lower it enough for the ion to enter the gas phase. That diagram has a "tedlar bag" attached for some reason though, so maybe theres some extra reaction going on between certain molecules and the tedlar, or the bad could be made of tedlar, thats not clear.
Yes, the theory of gravity is based on the fact that things fall towards the ground (unless some other forces pushes it up like your hand, a rocket or wind, etc). Then added to that is our observations of the activities of astronomical bodies, for which the theory seems to work very well as well(if it didn't we wouldn't be able to use satellites. The law of gravity is the equation that predicts what will happen in a system with massive bodies interacting with each other.
Evolution is based on the facts that we find fossils of animals/plants,etc similar to but different than those around today, many similarities in many diverse forms of life down to the cellular level(with some species more similar to others), viruses, bacteria, insects (lifeforms that reproduce often)that have different characteristics from generation to generation, and the passing on of traits from parents to offspring that is obvious to us all. The theory of evolution explains this very well, as evidenced by all the domesticated animals and plants that have been bred for us all to eat, play with, and use as beasts of burden, the different flu shots people get each year, etc but you get the point.
I was just playing lab rat so I think I got the standard number for research which is probably less precise than whatever is used in a clinical setting. Also the sensitivity of individual electrodes may have increased as you mentioned. I was mostly just commenting on the fact that the gel didn't really cause any problems or annoyances with me.
Well I've recently had 3 EEG's and it wasn't too bad, you just wipe the area with an alcohol swab after pulling it off, it took about 20 seconds to be completely free and clean of the thing...There were only ten electrodes though. Maybe the gel they use for higher density arrays is different or its just more of a pain because theres more stuff to stick to your skull.
To be fair, just because other "Western Countries" have laws like that already doesn't make it any better when the US government does it. If other western countries all jump off a cliff does that mean the US government should jump off the white house roof?
Mulder:If we fail to anticipate the unforeseen or expect the unexpected in a universe of infinite possibilities, we may find ourselves at the mercy of anyone or anything that cannot be programmed, categorized or easily referenced
Slashdot Mirror
Don't marry someone who cares about new shoes (or at least doesn't care if you do or not) and you don't have to deal with that.
Thats the case to an absurd extent. For a psych undergrad degree here I needed to take a Statistics for Psychology but decided to take the stats class offered by the math department instead because I knew the Psych department one would be retarded. Unfortunately it turns out that take that particular course is required to graduate with the major so I'm taking it now. 2 months in the class is learning hypothesis testing and every chapter in the book has a section about keeping your hopes up, and even does things like assume you don't know what it means to square a number (multiply it by itself). The midterm was filled with questions like "if a datapoint has a z-score of 1.54 how many standard deviations away from the mean is it?" The standards are lower than I imagined possible for a college class.
have you ever done coke and fucked a whore? Its for everyone.
As a "kid" still I'll say that almost noone really does that, its just way more convenient to send it over the internet when you want it. That being said if noone could download anything they wanted anymore thats exactly what would happen.
I thought it was funn
So comparing the two: 1)Battery in the car is charged off the power grid, then used to power an electric motor that turns the wheels. 2)Battery is charged off the power grid, used for electrolysis of hydrogen, H2 is then used to power an electric motor that turns the wheels (if we're talking about a fuel cell, which the article was). You're right it makes no sense.
The quote that caused this:
"Our nanoparticle-coated electrodes make electrolysers efficient enough to provide hydrogen on demand from a tank of distilled water in your car."
On closer inspection, that guy isn't even saying that what were arguing about is a legitimate use of this technology, just that it'd be possible. He was definitely going for that implicit meaning though. It all makes sense now, it's just a cleverly worded statement meant to make the technology sound better to investors.
Ok yea, I see what your saying. The original energy to create the hydrocarbons came from the sun ages ago, this situation is different because we're creating the fuel (H2) in situ and it'll take extra energy to decompose the water, which has to come from somewhere. So even with the claimed energy efficiency of 96% we'd be draining the battery providing the current the entire time. The only way it could work is that you have the water tank and the battery, then drive the car around until you have to recharge the battery from some external source. So in using a ubiquitous molecule like water as the general fuel, then somewhere down the line burning fossil fuels to recharge the batteries the result is having to drill for less oil,etc since you only need a relatively small amount of it to keep the battery going. The ultimate energy saving would result because water is easier to get at and purify than hydrocarbon fuels and it is regenerated at the end of the process(while octane, for example, is not).
Ok I'm not really clear on how the hydrogen fuel will power the engine. BUt think about your gasoline run car now. You turn it on, the [i]battery[/i] makes the starter motor start going which starts the pistons moving which then compress the gas to high pressures until they cant help but react with the oxygen in little explosions (or add a spark to the process that comes from the battery power) which then pushes the piston back. Then the momentum from pushing the piston back is used to once again compress the next set of gas via the crankshaft. So to answer your question, the energy for hydrolyzing the water probably originally comes from the battery, after which the system will begin powering itself.
Unfortunately you'd fail the emissions test.
Military police, I didn't even know it was used for members of parliament (american)
Not if we all had a billion monkeys on a billion typewriters
"MBA Jerks" are like the MPs of the educated work force, everyone else hates them because they dont directly contribute anything and are in charge of everything. IT, science, anything.
no its not, the only thing that could get passed on from parents to offspring would be a mutation in the dna of a germ cell line. So I guess if something happened that made a sperm cell out compete its sisters then that could be an instance of lamarckism, thats about it though. And you probably wouldn't even know it happened.
hilarious
well you still have to research the obvious, because sometimes intuition is wrong. Ever hear the thing about how many times you would have to fold a normal piece of paper in half in order for it to reach the moon? Really guess. The answer is 42. And I'm not just saying that because its the answer to everything.
Right, and it seems like their making a false dichotomy between environmental factors and DNA replication "errors," one can lead to the other (well replication errors can lead to susceptibility). Think about your skin cells, people who spend alot of time outside end up with their skin adapted. Its not just upregulation of whatever leads to more pigment, there is actually competition going on amongst the cell lines, those that survive better start to spread. Eventually even the whitest person you know will have permanently darker skin (if it doesn't kill them first that is). Same with every organ I imagine.
Yea to me it looks like spectroscopy, except instead of first purifying the sample then dissolving it, its some sort of gas chromatography device that separates the different molecules for you (based on how much each type sticks to the walls), then you scan whatever absorption frequencies your looking for with the laser and compare the energy you detect with what the laser put out. Wherever there was absorption(depends on the frequency and molecule) will tell you what was in there by comparing the spectra with that of known molecules. The trick here seems to be that you don't have to prepare the sample at all, and they use a series of ultra-short laser pulses rather than normal em radiation in order to detect low concentrations easier. Cool idea.
Also hydro-peroxide is the name for a different molecule (actually class of molecules) than hydrogen peroxide, R-O-O-H vs H-O-O-H respectively. And I assume the nitrate/nitrate ions are either hydrogenated or they regulate the pressure and lower it enough for the ion to enter the gas phase. That diagram has a "tedlar bag" attached for some reason though, so maybe theres some extra reaction going on between certain molecules and the tedlar, or the bad could be made of tedlar, thats not clear.
Yes, the theory of gravity is based on the fact that things fall towards the ground (unless some other forces pushes it up like your hand, a rocket or wind, etc). Then added to that is our observations of the activities of astronomical bodies, for which the theory seems to work very well as well(if it didn't we wouldn't be able to use satellites. The law of gravity is the equation that predicts what will happen in a system with massive bodies interacting with each other.
Evolution is based on the facts that we find fossils of animals/plants,etc similar to but different than those around today, many similarities in many diverse forms of life down to the cellular level(with some species more similar to others), viruses, bacteria, insects (lifeforms that reproduce often)that have different characteristics from generation to generation, and the passing on of traits from parents to offspring that is obvious to us all. The theory of evolution explains this very well, as evidenced by all the domesticated animals and plants that have been bred for us all to eat, play with, and use as beasts of burden, the different flu shots people get each year, etc but you get the point.
I was just playing lab rat so I think I got the standard number for research which is probably less precise than whatever is used in a clinical setting. Also the sensitivity of individual electrodes may have increased as you mentioned. I was mostly just commenting on the fact that the gel didn't really cause any problems or annoyances with me.
Well I've recently had 3 EEG's and it wasn't too bad, you just wipe the area with an alcohol swab after pulling it off, it took about 20 seconds to be completely free and clean of the thing...There were only ten electrodes though. Maybe the gel they use for higher density arrays is different or its just more of a pain because theres more stuff to stick to your skull.
To be fair, just because other "Western Countries" have laws like that already doesn't make it any better when the US government does it. If other western countries all jump off a cliff does that mean the US government should jump off the white house roof?
Johnston: "It appears the intel was faulty again sir" Base Cmdr. Assertion Fallacy: "Well, then we obviously haven't tortured him enough have we"
Have you ever seen the X-files movie?
Mulder:If we fail to anticipate the unforeseen or expect the unexpected in a universe of infinite possibilities, we may find ourselves at the mercy of anyone or anything that cannot be programmed, categorized or easily referenced
Also, this is really interesting considering this theory
The article links to the actual memo released by the army about it, where they discuss the lasers