...dig down quite a bit and you will find that many biodegradable substances that have been there for 20+ years have not really biodegraded at all
If these substances contain much carbon, that sounds like a good thing from a global warming perspective. Maybe we should change our goals and embrace this.
If they are also interested in programming you could let them try Knuth's Fundamental Algorithms or its sequel. Just have them ignore the hard problems.
The books I'm aware of are all either too easy or too hard for that audience, although I'm sure there are some in the middle. There are some easy but interesting topics that you might look for chapters on:
1) Prove Fermat's little theorem, and show how it can be show a number is composite (but not prime).
2) Derive the closed form for the nth Fibonacci number. This should include a little more on geometric series than I think is usually taught in high school.
3) How to solve linear Diophantine equations, and why it works.
But the poles don't really have CO2 up high (from what I recall most of it falls there, and then gets covered with snow).
No, carbon dioxide is well mixed in the troposphere. The poles have about as much above them as anywhere else does. It doesn't fall, the temperatures are not low enough to freeze it out, and even if that somehow happened there is too little snow at the center of Antarctica to impede the sublimation of the carbon dioxide when it warmes up.
The carbon dioxide level does slowly fall a few ppm with increasing altitude in the stratosphere, but I think this is because of it taking a long time for the increased level in the troposphere to diffuse up there. This is true everywhere, not just at the poles.
Patents should last the amount of time it takes to bring a product to market. That's a year, maybe two or three. Not fifteen or twenty.
The only competitors that would then have a problem with the patent is those who were already in development of an infringing device when the patent takes effect. True innovators would get hurt by these short patents occasionally, but copyists never would. I don't see the point.
as in all those datacenters saving power through dc, actually receiving the electricity from the national distributing network through ac ?
If we switch over to HVDC for long-distance power transmission, they may well not be.
Wait, you mean get DC power directly from HVDC lines? It would be fun to see how a data center reacts to running at large fraction of a million volts, as long as it's not my data center.
I've always loved deep blue christmas lights because of their weird optical effects. It never occurred to me that some people might find that unpleasant. The LED lights add some welcome variety - just last week I spent about ten minutes walking up close to some and then backing off to see how the view changed.
I wonder how come I still don't see any flashlights based on the fast charging lithium titanate batteries, such as the SCiB? They should charge in five minutes and shine much longer than an equivalent sized capacitor model.
The leeward areas, though rarely rainy, are generally for tourists, and who wants to go to Hawaii to see a wind farm?
I was in Maui a while back, and I though the windmills were one of the highlights. Watching them slowly get larger as the boat returned to Maalea Bay was mesmerizing.
Yeah, you'd think the editors here would know the difference between centimillionairs and hectamillionairs, and correct theodp's mistake before it became a public embarrassment to him.
From the relative lack of evidence of art and ritual found by archaeologists, I rather fancy that we would find Neandertals dull. Not necessarily stupid, just straight forward. Humor and sarcasm, for example, might be hard for them, even if engineering and other difficult trades weren't.
I'm ok with the general idea of resurrecting a Neandertal, after all we probably wiped them out so perhaps we have some responsibility to bring them back. With such an intellectual species I think we have a great ethical burden to make sure that they are fully healthy with no side effects from the process. Right now, though, I don't have enough confidence in the procedure to want to see it used to bring back a Neandertal anytime soon. I hope someday Neandertals will walk again, but I'm in no hurry, and they're not either.
We really could use a world wide grid, one that uses HVDC to connect suppliers of electric power to the users across large distances. This would make intermittent power sources such as wind much more useful.
Trying to use this term for a network is just plain annoying.
Re:Hey, remember when Ender's Game was good?
on
Ender in Exile
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· Score: 2, Interesting
For me it peaked at the initial novelette, which I did think was very good. I read a couple of the books but I didn't find them interesting.
The first place I ever saw that checked receipts on exit was the Price Club (later bought out by CostCo). Initially they took it pretty seriously. On one of our first trips there they noticed we had been overcharged for something and got us a refund!
There has been speculation that it's actually going to be front wheel(s) drive. That seems like an awfully big change this late in the game (unless it was a secret plan all along), but it might improve the ability to handle bad weather. It would also be a big enough secret to justify your NDA.
I think it matches a particle predicted by one theory that might explain dark matter, not that the new particle actually could be a typical dark matter particle.
What else besides carbon dioxide do you think could have caused the warming in the geologically distant past? The sun was cooler then, after all.
...where did this CO2 come from.
Volcanoes. When carbonates are subducted rapidly, as when India was moving towards towards Asia, it eventually ends up in the atmosphere. This enhanced emission is a strong candidate for the major cause of the Cretaceous warming.
Slashdot Mirror
If these substances contain much carbon, that sounds like a good thing from a global warming perspective. Maybe we should change our goals and embrace this.
If they are also interested in programming you could let them try Knuth's Fundamental Algorithms or its sequel. Just have them ignore the hard problems.
The books I'm aware of are all either too easy or too hard for that audience, although I'm sure there are some in the middle. There are some easy but interesting topics that you might look for chapters on:
1) Prove Fermat's little theorem, and show how it can be show a number is composite (but not prime).
2) Derive the closed form for the nth Fibonacci number. This should include a little more on geometric series than I think is usually taught in high school.
3) How to solve linear Diophantine equations, and why it works.
Well, if you enjoy watching guys wave their wanker around, enjoy!
Direct link. Otherwise I just get told I don't have the proper plug-in. Not very interesting porn, though.
That's not too far off from what happens on Mars. Maybe you just got your planets mixed up.
No, carbon dioxide is well mixed in the troposphere. The poles have about as much above them as anywhere else does. It doesn't fall, the temperatures are not low enough to freeze it out, and even if that somehow happened there is too little snow at the center of Antarctica to impede the sublimation of the carbon dioxide when it warmes up.
The carbon dioxide level does slowly fall a few ppm with increasing altitude in the stratosphere, but I think this is because of it taking a long time for the increased level in the troposphere to diffuse up there. This is true everywhere, not just at the poles.
The only competitors that would then have a problem with the patent is those who were already in development of an infringing device when the patent takes effect. True innovators would get hurt by these short patents occasionally, but copyists never would. I don't see the point.
Wait, you mean get DC power directly from HVDC lines? It would be fun to see how a data center reacts to running at large fraction of a million volts, as long as it's not my data center.
According to http://www.reasons.org/resources/apologetics/methane_and_life_on_mars.shtml The methane is broken down by UV.
The Toba eruption is generally thought to have been larger than any of the Yellowstone eruptions. The largest Yellowstone eruption was pretty close, though. Source: http://www.armageddononline.org/known-super-volcanoes.html
I've always loved deep blue christmas lights because of their weird optical effects. It never occurred to me that some people might find that unpleasant. The LED lights add some welcome variety - just last week I spent about ten minutes walking up close to some and then backing off to see how the view changed.
I still use the classic discussion system. If that option goes away I might leave too.
Octopuses might disagree.
He's from New York Country?
I wonder how come I still don't see any flashlights based on the fast charging lithium titanate batteries, such as the SCiB? They should charge in five minutes and shine much longer than an equivalent sized capacitor model.
The leeward areas, though rarely rainy, are generally for tourists, and who wants to go to Hawaii to see a wind farm?
I was in Maui a while back, and I though the windmills were one of the highlights. Watching them slowly get larger as the boat returned to Maalea Bay was mesmerizing.
Yeah, you'd think the editors here would know the difference between centimillionairs and hectamillionairs, and correct theodp's mistake before it became a public embarrassment to him.
From the relative lack of evidence of art and ritual found by archaeologists, I rather fancy that we would find Neandertals dull. Not necessarily stupid, just straight forward. Humor and sarcasm, for example, might be hard for them, even if engineering and other difficult trades weren't.
I'm ok with the general idea of resurrecting a Neandertal, after all we probably wiped them out so perhaps we have some responsibility to bring them back. With such an intellectual species I think we have a great ethical burden to make sure that they are fully healthy with no side effects from the process. Right now, though, I don't have enough confidence in the procedure to want to see it used to bring back a Neandertal anytime soon. I hope someday Neandertals will walk again, but I'm in no hurry, and they're not either.
We really could use a world wide grid, one that uses HVDC to connect suppliers of electric power to the users across large distances. This would make intermittent power sources such as wind much more useful.
Trying to use this term for a network is just plain annoying.
For me it peaked at the initial novelette, which I did think was very good. I read a couple of the books but I didn't find them interesting.
The first place I ever saw that checked receipts on exit was the Price Club (later bought out by CostCo). Initially they took it pretty seriously. On one of our first trips there they noticed we had been overcharged for something and got us a refund!
So how about a gas turbine engine instead? http://en.wikipedia.org/wiki/Gas_turbine
As your link states, they are too expensive.
There has been speculation that it's actually going to be front wheel(s) drive. That seems like an awfully big change this late in the game (unless it was a secret plan all along), but it might improve the ability to handle bad weather. It would also be a big enough secret to justify your NDA.
I think it matches a particle predicted by one theory that might explain dark matter, not that the new particle actually could be a typical dark matter particle.
What else besides carbon dioxide do you think could have caused the warming in the geologically distant past? The sun was cooler then, after all.
...where did this CO2 come from.
Volcanoes. When carbonates are subducted rapidly, as when India was moving towards towards Asia, it eventually ends up in the atmosphere. This enhanced emission is a strong candidate for the major cause of the Cretaceous warming.