Yes you can make it from water using electrolysis but that is not an efficient process, it consumes more energy than you get in the hydrogen and oxygen resultants
OF COURSE! Hydrogen has never been considered a source of power, its a means of transfering energy. Its a energy medium.
You use solar/wind/nuclear/oil/gerbilontreadmill to generate electricity to produce hydrogen. The energy is thus stored in the hydgrogen (in a sense). The hydrogen is transported and combined with oxygen in fuel cells to produce electricity.
Why use hydrogen? Well, you can generate the power using clean sources of energy such as solar/wind or nuclear (depending on your point of view). The energy can be stored in hydrogen, and hence used in vehicles. Why not use electricity directly? Because we don't have batteries good enough for that. Hydrogen allows for a greater energy density.
In conclusion: Hydrogen is a means of STORING ENERGY. Fuel cells are like normal batteries, but with a higher energy density.
Oh, and in response to 'how to you store hydrogen in a car'. I'm not sure, but I think the idea is to compress it much like conventional gas. Some studies have shown (sorry, no link) that hydrogen leaks very easily and will cause environmental damage, so you raise an interesting point.
As for energy requirements, the sun puts out billions upon billions of watts every second.
Watts are a measurement of power: Joules per second. I guess that was probably just a quick typo, but I find many people misuse 'watts' and 'power', and feel the need to point out their error:P.
Alcoholism and depression are already coinsidered valid reasons to not hire / release a person
Interesting thing there. Depression is more and more being considered a mental disease, as an attempt to have it accepted and lose the social stigma that has been attached to it. (I recently saw something on the news where they casually mentioned a member of some cricket team wasn't playing due to a bout of depression, as though they were talking about an ankle injury).
The interesting thing is that depression is becomming a medical problem. As a medical problem, it allows you to take time off work as if you were sick, and get special consideration for university marks etc. However, as it becomes more of an official medical condition, shouldn't we take the good with the bad? I'm sure other medical conditions prevent people from getting a job...
Just something to think about, I dont' think its a valid reason to not hire something, just want to see if there is a nother point of view.
Is it in M$'s own interests to allow people to pirate windows? afaik, they make most of their money selling windows to companies.
If heaps of home-users pirate microsoft products, and become accustomed to them, this will encourage companies to use microsoft products.
Can someone more knowledgable on this matter explain why this is/isn't the case? (And yes, I can see the parallels with the music industry, but this is about microsoft, not them)
Yes, you have a very good point. NASA and other space-agencies should be at the cutting edge of space-exploration and research. Personally I think this is why safety shouldn't be such a huge issue. The people who sign up for this know the risks. These days we have become too caught up in making everything perfectly safe, so that nothing ever gets done.
No, I wouldn't strap myself ontop of several hundred tons of fuel which is on fire, but there are plently of people out there willing it. Remember the days when explorers were heros?
could the recent privatization of space travel have something to do with this?
No.
Since when has space flight been privatised? As great and important as Burt Rutan's team's achievment was, it was only sub-orbital, can't really be considered space travel. In 10 years time privitised space travel maybe be a reality, but we still need something in the mean-time.
Note: I think the winning of the x-prize was truely an important event. More privitized sub-orbital flights are sure to follow. But its only the beginning at the moment.
Can someone explain to me why they didn't make the hardware for the ATMs from scratch? An ATM doesn't seem that complicated sort of a device. Could use any sort of micro-controller and write the software in assembly. Sure, getting it to communicate with the main bank-server-thingy might be harder, but I'm sure a bank could afford this.
OK, I guess maybe its just cheaper to use something that already exists (windows).
A more important, but related question: Why the hell do the diebold voting machines use windows?! Surely they could have been written from scratch using assembly, for a specialised microcontroller. I mean seriously, voting is pretty damn important! (Yes I realise it would be very hard, but when you're dealing with huge sums of money, and its organised by the government speficially for the most important part of democracy, I'm sure its doable)...Hrmm.
Since most people seem to think bush supporters don't know what they are voting for, maybe they would like to know of something that refutes that assumption?
I do see your point however, but also theirs. I'm just trying to answer your question, not insult anyone.
PS, I'm Australian, so I don't get to vote:)
The approach developed confines the beam to be switched in a circular resonator, greatly reducing the footprint required on the chip and allowing a very small change in refractive index to shift the material from transparent to opaque
Also, if it landed on your house, you medical bills would be paid for by the tv interviews you get, and eventually the book you write on 'my harrowing experience of nuclear space debris'
Sadly, the way all movies do this is buy adding romance into it.
The flavour of the day for action movies is to have the chick just as tough as the guy. Then, towards the end, the guy finally saves her somehow, showing that hes a real man. They fall in love, fade out.
Before then, it was the chick who started off appearing weak but saved the day.
Anyway, I for one hope the doom movie is just a gory shoot everything movie. Soon as another genre is injected into it (to try and increase the number of viewers), the movie is ruined.
Slashdot Mirror
You use solar/wind/nuclear/oil/gerbilontreadmill to generate electricity to produce hydrogen. The energy is thus stored in the hydgrogen (in a sense). The hydrogen is transported and combined with oxygen in fuel cells to produce electricity.
Why use hydrogen? Well, you can generate the power using clean sources of energy such as solar/wind or nuclear (depending on your point of view). The energy can be stored in hydrogen, and hence used in vehicles. Why not use electricity directly? Because we don't have batteries good enough for that. Hydrogen allows for a greater energy density.
In conclusion: Hydrogen is a means of STORING ENERGY. Fuel cells are like normal batteries, but with a higher energy density.
Oh, and in response to 'how to you store hydrogen in a car'. I'm not sure, but I think the idea is to compress it much like conventional gas. Some studies have shown (sorry, no link) that hydrogen leaks very easily and will cause environmental damage, so you raise an interesting point.
*cough* I think he was being sarcastic. Not everyone puts sarcasm tags around their comments :P
But yes, you have a good point.
-- Captain Pedantic strikes again!
The interesting thing is that depression is becomming a medical problem. As a medical problem, it allows you to take time off work as if you were sick, and get special consideration for university marks etc. However, as it becomes more of an official medical condition, shouldn't we take the good with the bad? I'm sure other medical conditions prevent people from getting a job...
Just something to think about, I dont' think its a valid reason to not hire something, just want to see if there is a nother point of view.
(I'm still recovering from depression)
Sadly, fucking 3rd world nations seems to be in large countries's interests :(
"that itching in my left butcheek" ? Don't wanna know how he caused that...
Well, personally I tested gravity and the bible at the same time. I dropped the bible, it fell so gravity won.
I agree. I actually thought it was kind of neat.
Yes, this has nothing to do with the topic, but can someone answer me this about that movie?
:(
WHY DID THEY ONLY BURN THE BOOKS?! What about all the wooden chairs and bookshelves? Also, why weren't there are naked chicks in the movie?
Is it in M$'s own interests to allow people to pirate windows? afaik, they make most of their money selling windows to companies.
If heaps of home-users pirate microsoft products, and become accustomed to them, this will encourage companies to use microsoft products.
Can someone more knowledgable on this matter explain why this is/isn't the case? (And yes, I can see the parallels with the music industry, but this is about microsoft, not them)
Yes, you have a very good point. NASA and other space-agencies should be at the cutting edge of space-exploration and research. Personally I think this is why safety shouldn't be such a huge issue. The people who sign up for this know the risks. These days we have become too caught up in making everything perfectly safe, so that nothing ever gets done.
No, I wouldn't strap myself ontop of several hundred tons of fuel which is on fire, but there are plently of people out there willing it. Remember the days when explorers were heros?
Since when has space flight been privatised? As great and important as Burt Rutan's team's achievment was, it was only sub-orbital, can't really be considered space travel. In 10 years time privitised space travel maybe be a reality, but we still need something in the mean-time.
Note: I think the winning of the x-prize was truely an important event. More privitized sub-orbital flights are sure to follow. But its only the beginning at the moment.
Can someone explain to me why they didn't make the hardware for the ATMs from scratch? An ATM doesn't seem that complicated sort of a device. Could use any sort of micro-controller and write the software in assembly. Sure, getting it to communicate with the main bank-server-thingy might be harder, but I'm sure a bank could afford this.
OK, I guess maybe its just cheaper to use something that already exists (windows).
A more important, but related question: Why the hell do the diebold voting machines use windows?! Surely they could have been written from scratch using assembly, for a specialised microcontroller. I mean seriously, voting is pretty damn important! (Yes I realise it would be very hard, but when you're dealing with huge sums of money, and its organised by the government speficially for the most important part of democracy, I'm sure its doable)...Hrmm.
"The Visionary Position" ? Sounds kinky
Maybe because you shouldn't be voting based on your emotions, but instead based on facts?
4 /html/new_10_21_04.html
:)
Or maybe because of the general ignorance of bush supporters?
http://www.pipa.org/OnlineReports/Pres_Election_0
Since most people seem to think bush supporters don't know what they are voting for, maybe they would like to know of something that refutes that assumption?
I do see your point however, but also theirs. I'm just trying to answer your question, not insult anyone.
PS, I'm Australian, so I don't get to vote
Well, it certainly wouldn't have been an optical cpu you are thinking about.
I'd say the UK is an ally of the US, and Australia is the 51st state. (Seriously, our Prime Minister will do anything to please bush)
Also, if it landed on your house, you medical bills would be paid for by the tv interviews you get, and eventually the book you write on 'my harrowing experience of nuclear space debris'
Bah, kids these days. Back in MY day we didn't have these fancy space-suits. We had to make do with some plastic sheets held together with string!
Sadly, the way all movies do this is buy adding romance into it. The flavour of the day for action movies is to have the chick just as tough as the guy. Then, towards the end, the guy finally saves her somehow, showing that hes a real man. They fall in love, fade out. Before then, it was the chick who started off appearing weak but saved the day. Anyway, I for one hope the doom movie is just a gory shoot everything movie. Soon as another genre is injected into it (to try and increase the number of viewers), the movie is ruined.
Just hope the movie doesn't use quickwaves and quickloads.
But in space no one gets any ice-cream. :(
Sorry couldn't help it