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Comment Re:flywheel (Score 2) 245

It's a partial solution. Hydro power is only really available in certain areas, and transmission losses kill some of the gains. BC makes a good amount of money this way. North America's hydro capacity is probably as large as it will ever be, because it's extremely destructive of wildlife habitat and of arable land.

There is a variation on this which has huge potential and can be done on a large scale. It requires large construction efforts, but what hydro-power options don't?

Construct a huge vertical cylinder in the ocean. During periods of surplus, pump water OUT of the cylinder. During peak periods, let water back in (and of course turn turbines with it).

I read about this not long ago, and I think (I am not certain) someone is building one right now, or has applied to build one.

and transmission losses kill some of the gains

This is true of any storage solution. It is hardly unique to pumped storage.

Comment Re:Off-topic apology (Score 1) 54

Since you indirectly brought it up, I will say that even though I am generally an honest person, there is one thing I admit to lying about on Slashdot, both overtly and (I flatter myself) rather subtly, and that is my location.

Because there are some real bastards out there. As I say, I am sure you understand.

Comment Re:unfair policy (Score 2) 302

Do you disagree with me so far?

Yes, as I have already explained in plain English, in response to your question about free markets.

If there is no free market in your industry (or not much of one left, anyway), then you don't get to claim free market forces would correct such imbalances. You're like those people who blame corporatism and "crony capitalism" on the concept of capitalism itself, when both of those things don't represent capitalism, but rather egregious deviations from capitalism.

Adam Smith (i.e., free-market) capitalism requires a robust, responsible, and enforced body of anti-trust law in order to keep people playing within the rules. When that enforcement breaks down (as it has, most notably during the last 2 administrations), then you get the kind of abuses of the system that we see. And the insurance industry, as a whole, has been one of the worst offenders.

So yes, I disagree. Your free-market corrections will only work in a free market. Trying to claim insurance is a free market today is a belly laugh. They are in government pockets (and vice versa) at all levels of government.

Comment Re:Jane/Lonny Eachus goes Sky Dragon Slayer (Score 1) 708

Again, we'll have to agree to disagree about thermal superconductors. That's why I've repeatedly pointed out that I've already solved [dumbscientist.com] this problem with an aluminum enclosing shell, and it also warms the heated plate (aka Jane's "source") to ~233.8F.

You solved part of the problem, under different conditions, as I have repeatedly pointed out.

Let's get this straight: rather than tackling the actual problem you claimed to have refuted, you solved a different problem under different conditions, and called that refutation.

Even if your analysis of that problem were 100% correct, this is the very definition of a straw-man argument.

So why do you refuse to just take Spencer's original challenge, with two non-enclosing plates (i.e., the challenge I originally presented to you), and simply show me where Latour was wrong about it, as you have so often claimed? After 2 years I can only conclude that you are not able to do it. I don't know of a single other plausible reason why you have refused to do this.

Again, Dr. Spencer's actual, original experiment included the possibility of a fully-enclosing passive plate.

That got a minor mention later in his article, is not included in his diagrams, and is NOT the problem I originally presented to you. As I have said many times before, AFTER you refute Latour's calculations regarding Spencer's original challenge, which did not have the passive body enclosing the heat source, I would be happy to move on to the other issue... with no additional stipulations or additions to the problem Spencer describes. But you haven't gotten there yet. Cart before the horse, with a straw-man riding the cart.

That was the challenge I presented you you. For 2 years now, you have been going far out of your way to do everything BUT that, which leads me to believe that is your new custom definition of "rebut". (I would say that last sentence is a jest, but in fact it is only partly so.)

We can agree that one should solve simpler problems before moving on to more complex problems, but we seem to disagree about which of the scenarios in Dr. Spencer's original experiment is simpler.

That wasn't my point. I'm not saying we should solve simpler problems before moving on to more complex problems. I'm saying the challenge originally given to you is to be met before moving on to something else and claiming it irrelevant. I only wrote that "in a way" it's not simpler. But again that is beside the point, which you appear to be attempting to sidestep again.

Again, solving a problem without spherical symmetry means you'll have to solve for equilibrium temperatures which aren't constant across the heated and passive plates. Those equilibrium temperatures wouldn't be simple numbers. They'd be complicated functions that would vary across the plate surfaces. Contrast that with a spherically symmetric enclosing plate, where equilibrium temperatures are just simple numbers.

I only claimed Latour was correct "with a reasonable degree of precision". He states himself in his original article that these are working approximations used for engineering, which in practice must have minor adjustments made experimentally for final product (when dealing with things like furnaces, which often have complex internal geometry). It's good enough for real world engineering, according to both Latour and the textbooks. So you don't get a pass on that basis, either.

Why don't you just shut up and do it? Why have you been so mightily struggling, like a fish on a hook, to avoid it?

Comment Re:Not the correct application for this (Score 5, Informative) 107

There is no reason, NO REASON that Firefox should eat up 1 GB of RAM.

Firefox caches images and rendered pages so that things happen reasonably fast. A 1000x1000 colur image at 24 bit is already 3M. There is no way a modern page with an image or two would fit in a few M.

Once you have 800 tabs loaded (something I tend to do) all running JS and using images all over the place, memory vanishes fast.

There are basically several problems. Yeah firefox isn't perfect and could do with some optimization. But, many websites do pointless bloaty stuff and require scads of JS and huge images just to show some text. And then there's the browsing habits.

These days I run with NoScript, and a tab unloader, and I'm picky what scripts I allow. It makes firefox usable on my 1GB netbook. It's taking up 176M at the moment. Actually it's got a bit better recently. Even with those it needed restarting to clear the ram, but now it runs substantially longer.

Comment Re:unfair policy (Score 1) 302

So are you really trying to suggest that corporate lobbying is pushing insurance companies to fake that climate change is real?

No, that isn't what I wrote. Try reading more carefully.

You asked me about free markets. I was explaining why it's pretty difficult today to honestly characterize the insurance industry, by and large, as a free market.

The other thing (claiming problems where there might not be any) is a different issue, and it's not valid to paste them together as you just did.

Comment Re:Jane/Lonny Eachus goes Sky Dragon Slayer (Score 1) 708

And I'm going to repeat this, just one more time, in the (probably vain) effort to get you to get it straight:

Take Spencer's original experiment, with two separated, non-enclosing plates, and show SPECIFICALLY where Latour was wrong in his calculations. THEN, if you like, you can move on to the enclosed-source situation.

I'm not buying anything else. No straw-man, no moved goalposts, no new introduced factors like "thermal superconductors".

Comment Re:unfair policy (Score 1) 302

How long has it been since the insurance industry in the United States actually represented a free market?

Corporate lobbying, government subsidies, "market capture" (which is another way of saying oligopoly)... all these things have been common for decades.

I defy you to find me a big insurance company taking that gamble. They're not because they know climate change is a real danger.

We both know that's not going to happen, for the reason I explained to you in my last comment, and just now here. So that doesn't prove anything.

Comment Re:Jane/Lonny Eachus goes Sky Dragon Slayer (Score 1) 708

As I've repeatedly and consistently stressed, "T_c" is only identical on both sides of the enclosing cold plate if it's a thermal superconductor.

We have never disagreed on this. The problem is that there is no such thing as a thermal superconductor of this kind, and you aren't seeing that it leads to contradictions. The only way it could exist would be if it had NO thermal effect on its surroundings whatever. So it's the ultimate straw-man argument. There is no way it can be legitimately used to demonstrate anything.

Since you just linked to this excellent example, did you notice that MIT solved this problem at the very top and got a completely different answer than Dr. Latour?

No, they didn't, because it's a different problem, being given a theoretical treatment. You keep doing that, but I'm not buying. Two infinite plates, neither of which is heated, is not even remotely the same situation, and it's also theoretical only. They're not taking into account certain real-world factors pertaining to Spencer's experiment. Latour does. Not that they're doing anything wrong... given the context of their situation: infinite non-heated grey bodies. This is not Spencer's experiment.

I've showed that Dr. Latour was wrong because his claim violates conservation of energy. Again, in physics that's a really big mistake.

No, you didn't. You did not point to a calculation he performed on Spencer's situation and prove it wrong. You took what you incorrectly called an analogous situation and called that wrong. Which has been my whole point here. You keep claiming something else represents Spencer's experiment, but you won't tackle Spencer's actual, original experiment. You have consistently refused, for over 2 years.

You can toss around equations all you like, but if you're not applying them to the experiment actually under discussion (and you haven't been), you're still not proving anything. You're just moving the goalposts.

And that's why I've said I'm out of here. You continue to refuse to actually do what you said you'd done: refute Latour's treatment of Spencer's challenge. You can keep prevaricating and beating around the bush and straw-manning and moving the goalposts, and I'll just keep telling you why you're wrong. Or rather, no I won't. I've done that too many times already.

Comment Re:unfair policy (Score 0) 302

How do you explain why all the insurance companies are convinced this is a problem?

That's dirt simple. If they can claim it's a problem, they can charge higher rates. So whenever they find something that they can even remotely get away with claiming to be a problem, they claim it is a problem. Whether it's true or not.

This is hardly a genius-level concept.

Comment Re:unfair policy (Score 0, Offtopic) 302

Not according to Zwally, et al. (abstract, pdf)

Melting has always occurred around Antarctica. That doesn't mean it's losing ice.

The net gain (86 Gigatons / year) over the West Antarctic (WA) and East Antarctic ice sheets (WA and EA) is essentially unchanged from revised results for 1992 to 2001 from ERS radar altimetry.

[emphasis mine]

Funny how these contrary studies have never seemed to make the headlines on Slashdot.

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