Well, we could cut them down after they get big and put them somewhere that doesn't typically burn or decay, like maby houses. That would give us another 30-100 years. Just possibly we would have fusion by then.
Excellent point. There is a reason the question as you asked it is not addressed. It is because we do not have some diagnostic method other than 'ask the patient questions' or 'observe patients behavior'. Until then it is very hard to answer your question. This applies to ADD and depression too.
The comment I was replying to was talking about degradation, not breakage. An earthquake may well shorten the life of solar cells, - by smashing them - and any instalation or lifetime calculations should take this into account. But this is hardly 'degradation'.
As far as weather, I would expect water, especially where it freezes, to damage the connections and frames, but not likely to affect the silicon bits themselves. Acid rain? Silicon stuff tends to resist acids and the like well, but I do not know if this extends to pure Si or just SiO2 based stuff. Ditto for Oxygen in the atmosphere, although I really doubt this one. As far as temperature and radiation, space is a much harsher place than California. As far as simpler panels, are you talking about the connections/inverters etc., or the individual cells themselves? I see no reason we can't use the same cells here as in orbit. I have never heard that the cells themselves are different.
I think that photovoltaic degradation is mostly caused by molecular drift, doping atoms slowly moving to where they aren't supposed to be, and Si-Si bonds breaking due to radiation and random thermal stuff, but this is mostly a guess on my part. I do know that degradation reduces the power a cell produces, not stops it from working altogether.
Like you I am no expert on the topic - someone with some credentials better than IMNSHO care to enlighten us? Links maby?
"I believe replacement is suggested after 25 years"
No, that is just when the warranty runs out. Since it has only been 52 years since the modern Si photovoltaic cell was invented, the life of solar cells is not really known. The oldest working communications satellite appears to be ATS-3 (from a quick google search) and is 39 years old. - so they can work at least that long.
Please note that all that can be done (as far as they know) with the 'X client that visits a malicious web page' senario is crash X. Not run root code. It is the 'remote X client' that can run root code.
I RTFA, and it was needlessly anti-nvidia-binary-blob. They are not simply reporting a flaw - they are pushing their view.
The article said why Iraq does not show up - numbers are not available.
As for Iran. IMHO Iran is as likely to get better as it is to get worse. And predicting either is not much better than flipping a coin. This applies to a lot of other oil exporters. So since this cannot be predicted with any real accuracy they do not include the predictions, and they say "This assessment should be taken "with a grain of salt", it is not to be expected that the future will follow these projections. "
The numbers for the former soviet union come together. If they could get them separate they would list them separatly.
"Either way, at some point, we will need to cap population if we do not wish to extinct ourselves. And as we only hit 1 Billion global population just over 150 years ago... I'm a little concerned about our prospects of doing so w/in the next 100.
I am not very concerned - It is likely to happen without us doing anything that is not already being done.
"...solution would be to add maybe 60 million Mexicans to... the US over the next 20 years..."
That is more than half the entire Mexican population. (reference) If you are not simply exaggerating, (ie. FUDing) could you please back up your numbers?
The periodic table was also 'discovered' in the 1800's, even though the transuranics were not added until 1940 or so. Putting the periodic table up sounds like a good idea to me.
Sounds right to me. Proving that there is no other way that life could have arrived where it is would require proving that we know everything - no easy task I am sure. I suspect the duplication part will happen in 100 years or so - or at least proof that it is possible. I do not think proving we know everything - even when we do - is possible at all.
"proof in the scientific community is simply overwhelming evidence supporting a working model of a theory."
Well, I believe you have to add 'and lack of any verifiable evidence that disproves the theory' to that. Both Quantum Mechanics and the General Theory of Relativity have tons of supporting evidence. However, under certain conditions (black holes etc), they contradict each other. They can't both be right.
"Macroevolution is a hypothesis. One cannot prove it."
Well, it is possible to prove that macroevolution can and is occuring, in the same way you can prove that hydrogen + oxygen = water.
What is impossible to 'prove' is that macroevolution is how life got to where it is. Can it be proven that life could have gotten to where it is by macroevolution? Yes - much of that kind of proof has been done and the last pieces (abiogenisis in particular) are being filled in fast. Prove that this is how it got here? If it did, it happened in the past, and as such is outside the realm of strict science. Just like proving that I got out of bed today is impossible. It is a past event. On the other hand, I would be suprised if the evolution of life, from abiogenisis to modern human, is not proven possible or impossible within a century.*
Can it be proven that there is no other way for life as we know it to occur? I really do not think so. We would have to prove that we know everything.
Astrology? Did you mean astronomy? Astrology has almost no statisically valid evidence to show that it could be true, very much unlike economic theory.
*Please ignore the fact that I will not likely be around in 100 years....;-)
Slashdot Mirror
Why are you asking me, it's not like I am the one making the decision, Right???
I smell a logic error somewhere...
Well, we could cut them down after they get big and put them somewhere that doesn't typically burn or decay, like maby houses. That would give us another 30-100 years. Just possibly we would have fusion by then.
But, solar panels last a lot longer than 7 years. Most are under warranty for twice that.
Now, this is harldy ideal, it means that solar is at worst half as bad CO2-wise as just burning the coal or whatever, but it is better.
Excellent point. There is a reason the question as you asked it is not addressed. It is because we do not have some diagnostic method other than 'ask the patient questions' or 'observe patients behavior'. Until then it is very hard to answer your question. This applies to ADD and depression too.
As far as weather, I would expect water, especially where it freezes, to damage the connections and frames, but not likely to affect the silicon bits themselves. Acid rain? Silicon stuff tends to resist acids and the like well, but I do not know if this extends to pure Si or just SiO2 based stuff. Ditto for Oxygen in the atmosphere, although I really doubt this one. As far as temperature and radiation, space is a much harsher place than California. As far as simpler panels, are you talking about the connections/inverters etc., or the individual cells themselves? I see no reason we can't use the same cells here as in orbit. I have never heard that the cells themselves are different.
I think that photovoltaic degradation is mostly caused by molecular drift, doping atoms slowly moving to where they aren't supposed to be, and Si-Si bonds breaking due to radiation and random thermal stuff, but this is mostly a guess on my part. I do know that degradation reduces the power a cell produces, not stops it from working altogether.
Like you I am no expert on the topic - someone with some credentials better than IMNSHO care to enlighten us? Links maby?
No, that is just when the warranty runs out. Since it has only been 52 years since the modern Si photovoltaic cell was invented, the life of solar cells is not really known. The oldest working communications satellite appears to be ATS-3 (from a quick google search) and is 39 years old. - so they can work at least that long.
I RTFA, and it was needlessly anti-nvidia-binary-blob. They are not simply reporting a flaw - they are pushing their view.
As for Iran. IMHO Iran is as likely to get better as it is to get worse. And predicting either is not much better than flipping a coin. This applies to a lot of other oil exporters. So since this cannot be predicted with any real accuracy they do not include the predictions, and they say "This assessment should be taken "with a grain of salt", it is not to be expected that the future will follow these projections. "
The numbers for the former soviet union come together. If they could get them separate they would list them separatly.
This may apply for grade school, but in a university - especially the higher level courses, this is not always the case.
For a lot of professors, what they enjoy is research. Teaching is something that they do because it is a job requirement.
" Your comment has too few characters per line"
(slashdot filters.....),
Hamlet is a play, with lots of short lines....
They won't collide.
Chart
Note that the max for current LED's is the midrange for CF - and the low end is not much better than a 100W incandescant.
I am looking at power use only, not lifetime or cost/lifetime etc.
And that is a troy pound too, which is different from the 16 oz pound. Troy Weight
The first jet airliner did just that (well, it exploded, not imploded...)
The x3 claim appears to be per harvest, The 1200/14.2 claim is per year.
(Posting over a broadcom g card using wpa-psk ndiswrapper + wpa_supplicant)
I am not very concerned - It is likely to happen without us doing anything that is not already being done.
google search world+population+peak
Cellophane
(my first thought when reading this.)
same here.
That is more than half the entire Mexican population. (reference) If you are not simply exaggerating, (ie. FUDing) could you please back up your numbers?
The periodic table was also 'discovered' in the 1800's, even though the transuranics were not added until 1940 or so. Putting the periodic table up sounds like a good idea to me.
Sounds right to me. Proving that there is no other way that life could have arrived where it is would require proving that we know everything - no easy task I am sure. I suspect the duplication part will happen in 100 years or so - or at least proof that it is possible. I do not think proving we know everything - even when we do - is possible at all.
Well, I believe you have to add 'and lack of any verifiable evidence that disproves the theory' to that. Both Quantum Mechanics and the General Theory of Relativity have tons of supporting evidence. However, under certain conditions (black holes etc), they contradict each other. They can't both be right.
Well, it is possible to prove that macroevolution can and is occuring, in the same way you can prove that hydrogen + oxygen = water.
What is impossible to 'prove' is that macroevolution is how life got to where it is. Can it be proven that life could have gotten to where it is by macroevolution? Yes - much of that kind of proof has been done and the last pieces (abiogenisis in particular) are being filled in fast. Prove that this is how it got here? If it did, it happened in the past, and as such is outside the realm of strict science. Just like proving that I got out of bed today is impossible. It is a past event. On the other hand, I would be suprised if the evolution of life, from abiogenisis to modern human, is not proven possible or impossible within a century.*
Can it be proven that there is no other way for life as we know it to occur? I really do not think so. We would have to prove that we know everything.
Astrology? Did you mean astronomy? Astrology has almost no statisically valid evidence to show that it could be true, very much unlike economic theory.
*Please ignore the fact that I will not likely be around in 100 years.... ;-)