first, diesel is maybe 10-15% more energy rich than gasoline.
But at no point did you include how much energy we'd actually need, nor did you account for how much space in total we'd need to dedicate to harvesting in order to meet that demand. Only after including those factors could you argue that the bionic leaf could not meet our needs...
what are you smoking? that's exactly what I said. The actual amount of energy was however many billion gallons per year, the space requried was however many square kilometers. isn't that exactly was I said?
While liquid hydrocarbons are fairly good in terms of specific energy, they are horribly inefficient compared to alternatives. I suppose it's good that you can easily carry that much energy around with you when you will inevitably piss 80% of it away as waste.
this is a good point.
And I'm pretty sure "god's fuel" would be hydrogen, used in the form of nuclear fusion. That literally powers the universe and is the source of all complex matter that we know of.
GP says that smoking is a social benefit because it kills people early instead of having old person deaths that are supposedly more expensive. I'm saying that smoking also eliminates decades of productive contributions to society, so even if old person deaths were more expensive (a fact of which citation is needed), it also eliminates productive contributions.
supreme court example is exxagerated, but it's true that scalia is 80 and RBG is 82, and they're considered to be the leaders of the conservative and liberal wings.
i dont like smoking cuz it reeks. people smell disgusting, worse than a homeless person who shat himself for a month. but these smokers still want to do things like eat in restaurants and go to jobs and other public places. there should be a smoker's island where everybody can be and smoke.
The point is, the article says that this bionic leave can be used to create fuel. What I'm arguing is that fuel requires so much energy that there's no way the bionic leaf capturing energy from the sun could produce enough fuel to meet our needs, using practical assumptions.
The honest truth is there is a ridiculous amount of energy in a gallon of gasoline. It's like gods energy source. it's extraordinarily energy dense. it's a liquid at room temperatures. it's relatively non-toxic in that it won't kill you right away. It's relatively energy in that if you spell it it's not going to burst into flames. Even if you throw a match on it the surface will light on fire but only in the presence of oxygen. It will never explode unless you actively turn it into an aerosol. We've gotten good enough at refining and distribution that it's relatively cheap and ubiquitously available. It's really really hard for any alternative fuel to compete with gasoline, because gasoline is gods fuel.
actually the batteries will be integrated with the chassis so when you take it in for a battery replacement they just replace it with a remanufactured car.
if the guy is in your building, then just walk the files over on a thumb drive. that way it never goes through the network at all. or, just print it out and give it to him? seems like a number of options are more secure than email.
I think a more apt comparison is the MacBook air, which is why the surface commercials compare against the air not the ipad. it's an interesting discussion which is a greater value; they both cost about the same and serve similar purposes. the comparison to ipad isn't as apt.
agreed, ddg is my default as well. i also like the bangs feature, so I can type into my browser's search bar "alexander hamilton !w" and it takes me immediately to the wikipedia page for alexander hamilton without needing to deal with any annoying click throughs.
It's like estimating the number of piano tuners in Chicago by starting with the number of cab drivers in New York and concluding that light rail public transit isn't viable in rural Iowa.
so you're saying that even though the methods are roundabout, the conclusion is sound. I agree!
134 billion gallons. based on your math, it's 140,000 km^2 of bionic leaf to make the gasoline for USA.
134 billion gallons / (266,666 gallons per day per 100 square km (calculated above) * 365)
What else is 140,000 square km? new York state. so is north Carolina. so is iowa. it's a lot of room.
another perspective: it took millions of years of sunshine to grow plants to feed dinosaurs to be melted into oil and used today. it's really hard to replace that with a solution that runs in steady state, as in we produce enough for our annual consumption in one year. Maybe we need a dyson sphere...
The energy balance doesn't work out here. Max solar intensity is 1 kw / m^2, or 1 kj per square meter every second, or 3.6 MJ per square meter per hour. A gallon of gasoline is 120 MJ. So assuming 100% efficiency and 100% peak sunlight, it would take 30 hours to make a gallon of gas from one square meter of artificial leaf. Considering the average solar intensity is about 10% the max, and any process involving the sun is max 20% efficient, it starts to take a very long time to make one gallon of gas. Not even including the energy requirements of the leaf / enzyme process.
Slashdot Mirror
first, diesel is maybe 10-15% more energy rich than gasoline.
But at no point did you include how much energy we'd actually need, nor did you account for how much space in total we'd need to dedicate to harvesting in order to meet that demand. Only after including those factors could you argue that the bionic leaf could not meet our needs...
what are you smoking? that's exactly what I said. The actual amount of energy was however many billion gallons per year, the space requried was however many square kilometers. isn't that exactly was I said?
While liquid hydrocarbons are fairly good in terms of specific energy, they are horribly inefficient compared to alternatives. I suppose it's good that you can easily carry that much energy around with you when you will inevitably piss 80% of it away as waste.
this is a good point.
And I'm pretty sure "god's fuel" would be hydrogen, used in the form of nuclear fusion. That literally powers the universe and is the source of all complex matter that we know of.
this is also a good point.
GP says that smoking is a social benefit because it kills people early instead of having old person deaths that are supposedly more expensive. I'm saying that smoking also eliminates decades of productive contributions to society, so even if old person deaths were more expensive (a fact of which citation is needed), it also eliminates productive contributions.
supreme court example is exxagerated, but it's true that scalia is 80 and RBG is 82, and they're considered to be the leaders of the conservative and liberal wings.
what about fukushima? thery'e building muon detectors just to find the uranium.
i dont like smoking cuz it reeks. people smell disgusting, worse than a homeless person who shat himself for a month. but these smokers still want to do things like eat in restaurants and go to jobs and other public places. there should be a smoker's island where everybody can be and smoke.
I don't like smoking because it reeks.
Also you have 20 extra years to be a productive member of society. The average age for Supreme Court judge is 96.
Last year I cracked my screen but my phone was under AppleCare so I when I went into th eugenics bar they just gave me a new phone. Took like 15 min.
The point is, the article says that this bionic leave can be used to create fuel. What I'm arguing is that fuel requires so much energy that there's no way the bionic leaf capturing energy from the sun could produce enough fuel to meet our needs, using practical assumptions.
The honest truth is there is a ridiculous amount of energy in a gallon of gasoline. It's like gods energy source. it's extraordinarily energy dense. it's a liquid at room temperatures. it's relatively non-toxic in that it won't kill you right away. It's relatively energy in that if you spell it it's not going to burst into flames. Even if you throw a match on it the surface will light on fire but only in the presence of oxygen. It will never explode unless you actively turn it into an aerosol. We've gotten good enough at refining and distribution that it's relatively cheap and ubiquitously available. It's really really hard for any alternative fuel to compete with gasoline, because gasoline is gods fuel.
Maybe the GP should copyright his SSN, so if he gets doxxed he can post a takedown notice!
i still don't believe it.
actually the batteries will be integrated with the chassis so when you take it in for a battery replacement they just replace it with a remanufactured car.
if the guy is in your building, then just walk the files over on a thumb drive. that way it never goes through the network at all. or, just print it out and give it to him? seems like a number of options are more secure than email.
> That means even sophisticated tricks like a “cold boot attack,” which literally freezes the data in a computer’s RAM
Does the attacker douse the computer in liquid nitrogen, like the T-1000?
I already have my license on my phone, it's called scotch tape, bitchezz. and I can show the officer without even needing to unlock the screen!
I think a more apt comparison is the MacBook air, which is why the surface commercials compare against the air not the ipad. it's an interesting discussion which is a greater value; they both cost about the same and serve similar purposes. the comparison to ipad isn't as apt.
can firefox keywords take you directly to search results in youtube (!y), google images (!images), and dozens of others? I didn't think so. ddg #ftw.
i once worked at a place near a wonderbread factory, and I would buy things at the wonderbread factory store.
Same goes for the iPad. Why pay $500 for a tablet that is so limited when you can get a Surface Pro that does so much more for only a little bit more.
i priced out a surface a couple months ago. with the felt keyboard thing it was $1200 out the door, more than double an ipad.
> spent a lot on R
I actually typed something like "R and D and" with the ampersand, but clearly that's asking too much.
i assumed you meant lobbying republicans, which is also true.
agreed, ddg is my default as well. i also like the bangs feature, so I can type into my browser's search bar "alexander hamilton !w" and it takes me immediately to the wikipedia page for alexander hamilton without needing to deal with any annoying click throughs.
It's like estimating the number of piano tuners in Chicago by starting with the number of cab drivers in New York and concluding that light rail public transit isn't viable in rural Iowa.
so you're saying that even though the methods are roundabout, the conclusion is sound. I agree!
it's just a quick Fermi approximation. it's a useful way to get a quick estimate of something within an OM or so.
it's just an order of magnitude thing. Fermi approximation. converting the energy in from sunline to energy out in terms of a unit we use each day.
134 billion gallons. based on your math, it's 140,000 km^2 of bionic leaf to make the gasoline for USA.
134 billion gallons / (266,666 gallons per day per 100 square km (calculated above) * 365)
What else is 140,000 square km? new York state. so is north Carolina. so is iowa. it's a lot of room.
another perspective: it took millions of years of sunshine to grow plants to feed dinosaurs to be melted into oil and used today. it's really hard to replace that with a solution that runs in steady state, as in we produce enough for our annual consumption in one year. Maybe we need a dyson sphere...
The energy balance doesn't work out here. Max solar intensity is 1 kw / m^2, or 1 kj per square meter every second, or 3.6 MJ per square meter per hour. A gallon of gasoline is 120 MJ. So assuming 100% efficiency and 100% peak sunlight, it would take 30 hours to make a gallon of gas from one square meter of artificial leaf. Considering the average solar intensity is about 10% the max, and any process involving the sun is max 20% efficient, it starts to take a very long time to make one gallon of gas. Not even including the energy requirements of the leaf / enzyme process.