typodupeerror

Comment: Ebola doctors attacked and killed (Score 1)23

by smooth wombat (#47977049) Attached to: CDC: Ebola Cases Could Reach 1.4 Million In 4 Months
Considering there was the recent killings of doctors who were trying to educate the unwashed masses on how to prevent or mitigate the spread of Ebola, along with the other attacks and general mistrust of health workers, letting the disease spread might not be a bad option.

Those who don't want to listen to experts die off, those who are too panicked to touch the dead bodies live, and things work themselves out.

Cruel? Maybe. But when you're already putting your life on the line trying to help people and those people attack and kill you, sometimes you have to make the tough decision to let nature take its course.

Comment: Jane/Lonny Eachus goes Sky Dragon Slayer (Score 1)173

by khayman80 (#47976775) Attached to: 3 Short Walking Breaks Can Reverse Harm From 3 Hours of Sitting

But Jane's equation is different:

electrical power per square meter = (s)*(e)*Ta^4

YES!!! This is a different equation! It's not an equation for heat transfer! It's the Stefan-Botlzmann RELATION between radiative power out and temperature for gray bodies. It is used for calculating RADIATIVE POWER OUT versus TEMPERATURE and vice versa. It is not for heat transfer and I'm not using it for heat transfer. YOU are the one who is getting them confused, not me. This other equation shows that radiative power is dependent ONLY on emissivity and temperature. It does not depend on other bodies. For the third time (today): it's a temperature vs. power equation, not a heat transfer equation. Further, "electrical" is your own addition. The equation is for power. It doesn't specify "electrical". [Jane Q. Public, 2014-09-22]

My equation for electrical power is different than the equation for radiative power out, which is why it's bizarre that Jane keeps using the equation for radiative power out to determine electrical power. That's what I've been trying to tell Jane: we don't disagree about the equation for radiative power out. The equation for radiative power out is simply a part of the equation for conservation of energy: power in = power out through a boundary where nothing inside is changing. That's why we need to use a heat transfer equation to determine electrical heating power, not just an equation for radiative power out.

... it is not necessary to account for cooler bodies in the temperature versus power out equation. ... The second equation you cited above is the STANDARD equation for calculating radiative power out of a gray body. I showed you where it was in Wikipedia. It also just happens to be in my heat transfer textbooks. The answer is 82.12 W/m^2. It is the textbook answer. It isn't going to change. Why don't you look it up in a textbook and discover that for yourself? ... Radiative power out of the warmer body is dependent ONLY on emissivity and thermodynamic temperature. Anything else violates the second law of thermodynamics. It isn't controlled or mitigated by nearby cooler bodies. ... [Jane Q. Public, 2014-09-22]

I've already agreed that it's not necessary to account for cooler bodies in the temperature versus power out equation. Again, we're not disputing the equation for radiative power out. We're disputing the equation describing conservation of energy around a boundary drawn around the heat source:
power in = electrical heating power + radiative power in from the chamber walls
power out = radiative power out from the heat source

Since power in = power out:

electrical heating power + radiative power in from the chamber walls = radiative power out from the heat source

This doesn't violate the equation for radiative power out. It simply uses that equation to account for the power flowing out of the boundary, and uses that same equation for radiative power to describe radiative power flowing into the boundary.

... I will repeat: I did not and do not claim that no radiation is absorbed. Just no net radiative power. Any that does get absorbed is just re-transmitted... [Jane Q. Public, 2014-09-22]

Jane's been calculating the required electrical heating power, which requires using a net heat transfer equation to describe power in = power out through a boundary around the source. Because Jane's equation doesn't even include a term for "radiative power in", Jane's equation does claim that no radiation is absorbed at all.

If Jane would reconsider conservation of energy and include a term for "radiative power in", then Jane could honestly say he was only claiming that no net radiative power is absorbed by the source. Until then, Jane's equation claims that no radiation is absorbed by the source at all.

But Jane's equation is nonsense, because absorption is controlled by absorptivity. So we could only ignore the power radiated from the chamber walls if the source's absorptivity = 0. But then its emissivity = 0, so it also couldn't emit any radiation, so it couldn't be a heat source.

Look at your S-B equation above. What does it say? No net radiative power is absorbed by warmer bodies from cooler bodies. You said so yourself. But NOW, you're claiming that it is. You contradict yourself. ... [Jane Q. Public, 2014-09-22]

No, I said the source has to absorb some radiation as long as it has absorptivity > 0. I never said the source would absorb more radiation than it emitted. In fact I said the opposite "happens automatically".

... The chamber walls neither transfer any of their net radiative power to the heat source, nor do they cause the net radiative power of the heat source to be any less. They have NO EFFECT. Net energy flows only FROM the heat source to the walls, and the temperature of the walls effects heat transfer only, not radiative power of the heat source. ... [Jane Q. Public, 2014-09-22]

If the temperature of the walls affects heat transfer, they also affect how much electrical heating power is required to keep the source at 150F. Note that I said "electrical heating power" and not "radiative power out" because these are two very different things. Calculating "radiative power out" just requires writing down the Stefan-Boltzmann law. Calculating "electrical heating power" requires drawing a boundary around the heat source at steady-state, and setting power in = power out.

... Do you think we're all idiots? Power in = power out. Your Newmann and Dirichlet boundary conditions are just more straw men. We don't need them to find the answer to this. Plain old algebra works just fine, because everything is at steady-state. So knock off the bullshit, because I see right through it, and so will the others I show this to. ... [Jane Q. Public, 2014-09-19]

Of course boundary conditions are needed to find the answer, because they determine what "plain old algebra" is used, even at steady-state. We're all applying Dirichlet boundary conditions to the chamber walls, but Jane mistakenly applied them to the source as well, instead of the correct Neumann boundary conditions. Jane also continues to wrongly insist that Jane held electrical heating power constant as well as holding source temperature constant. So apparently in Janeland there's no difference between Neumann and Dirichlet boundary conditions. If that's true, why do physicists and engineers use different names for Neumann and Dirichlet boundary conditions?

... The areas in his equation were unnecessary ... Therefore the areas were irrelevant and about all he accomplished with his large equation was to further confuse the issue. ... [Jane Q. Public, 2014-09-10]

After I originally solved a simple equation without areas, Jane objected that neglecting areas was a "fucking logical error!". That's why I had to solve the more accurate large equation with areas, even though I warned Jane that it wouldn't substantially change the answer.

The large equation with areas was also necessary because:

... 788.01 W != 721.44 W (!!!) Power is not conserved. ... the inner surface of the cavity has twice as much area, so the total power radiated is twice as much. Power is not conserved. ... [Jane Q. Public, 2014-09-07]

Jane confused himself about areas so badly that he claimed "power is not conserved". So I explained that Wikipedia’s equation correctly takes into account areas and view factor.

Wikipedia's equation conserves energy because the view factor from chamber walls to enclosed source equals the area ratio. If the view factor didn't vary exactly like that, energy really wouldn't be conserved.

But the chamber wall completely encloses the source, so its view factor is 1.

No. If the surfaces are numbered 1, 2, 3, 4 as I did in my solution, F12 = F34 = 1. In the other direction (as you already know, and so do I) it is R1/R2, where R1 is the smaller diameter. F21 = F43 = 0.9989. [Jane Q. Public, 2014-09-19]

As I said, the view factor from enclosed source to chamber walls is 1. If Jane wants to calculate the view factor in the other direction, the link I've repeatedly given Jane shows that for smaller radius R1, F21 = (R1/R2)^2 = 0.9978.

If the view factor varied as the radius ratio like Jane claims, energy really wouldn't be conserved. The view factor has to vary as the area ratio, which is the square of the radius ratio.

... I'd say that Wikipedia's equation is more correct because it includes area and view factor, which MIT's equation does not. ... [Jane Q. Public, 2014-09-19]

If only I'd mentioned that repeatedly.

... The equation you are trying to use there is a partial equation for heat transfer, not radiant power output. They're not the same things. The proper equation for power out given radiant temperature is right there in the above paragraph. It can be found in any heat transfer textbook and many physics books. Didn't you notice that MIT's equation is essentially the SAME equation as Wikipedia's heat transfer equation, except for areas? I sure did. Why didn't you notice that? ... [Jane Q. Public, 2014-09-19]

Of course I noticed that they're both net heat transfer equations, which is why I used them both in the same way to get nearly identical answers. I'm using MIT's and Wikipedia's equations because they yield radiative "power out minus power in". These net heat transfer equations are the proper equations for applying conservation of energy to a boundary around the source.

In contrast, Jane's clinging to an equation for "power out" and incoherently trying to justify ignoring "power in" through that boundary.

... I will make use of only ONE of your assumptions: that the enclosing plate (hollow sphere) is, due to thermal conductivity, approximately the same temperature on both sides. It's only 1mm thick after all, and the thermal conductivity of aluminum was a stipulation of yours so it will be the same to a couple of decimal places, give or take. So the answer won't be exact, but it will be reasonably accurate. Certainly close enough to demonstrate the concept. ... [Jane Q. Public, 2014-09-10]

When I approximated the enclosing shell as a thermal superconductor, Jane insisted that there's no way to demonstrate anything with it without leading to a contradiction, and that it was nothing but misdirection and a fantasy ultimate straw-man argument.

When Jane approximates the enclosing shell as a thermal superconductor, it's reasonably accurate and certainly close enough to demonstrate the concept.

A cynic might suspect double standards.

... I have already explained how your "boundary" assumed that all the power was output from the outside of the enclosing sphere. ... you neglected to account for the fact that the hollow sphere has TWO surfaces it is radiating from. You left out half the m^2 in A, so your figure for W/m^2 was off by very nearly 100%. Q.E.D. [Jane Q. Public, 2014-09-11]

Once again, Jane's completely wrong. When I held the source temperature constant, I reproduced Jane's result. So we're actually disagreeing about what to hold constant. If Jane's hilarious "Q.E.D." were correct, I wouldn't have been able to reproduce Jane's result simply by changing what variable I held constant.

... Add them together for the total heat transfer: 27.7832 + 27.7813 = 55.5645 total heat transfer. This checks against our initial calculation which was 55.5913. The difference is only 0.0268, or about 0.1%. Close enough for what we're doing. ... [Jane Q. Public, 2014-09-10]

Ironically, Jane's off by ~100%. Again, Jane's total heat transfer dropped to 27.8 W/m^2 after the shell was added, so Jane's meaningless 55.6 W/m^2 value is ~100% higher than the actual value.

... Factor out (e*s) from both sides. (Despite khayman80's assertion that we cannot do this, yes we can. It is the same scalar and the same constant on both sides.) ... [Jane Q. Public, 2014-09-10]

Once again, I never asserted that. In fact, I repeatedly showed Jane an equation derived by factoring out the sigmas and epsilons from both sides. Only Jane/Lonny Eachus could repeatedly quote that equation and even agree with it, then accuse me of asserting the opposite.

Comment: Re:Fuck yourselves culture police (Score 1)130

by Minwee (#47976533) Attached to: Netflix Rejects Canadian Regulator Jurisdiction Over Online Video

Nobody wants to see Netflix start shit like "this video is not available in your area".

maybe if Canadian shows were any good, they would get naturally popular as well. Fucking dumbasses.

Hell yeah. If Canada could produce anything as good as The Tudors, Alfred Hitchcock Presents, Ray Bradbury Theatre, SCTV, Prisoners of Gravity, This Hour Has 22 Minutes or The Kids in the Hall, then they wouldn't suck.

Comment: Re:Not surprisingly the CRTC is made up of ... (Score 1)130

by Minwee (#47976415) Attached to: Netflix Rejects Canadian Regulator Jurisdiction Over Online Video

So long as he does a good job (and he has) and does use his position of power to push those beliefs on others (he hasn't) you have nothing to complain about.

Right. It's not like his government is shutting down libraries and burning books. That kind of thing only happens on American TV.

Comment: Re:Funny how this works ... (Score 1)130

by smooth wombat (#47976083) Attached to: Netflix Rejects Canadian Regulator Jurisdiction Over Online Video
our so-called representatives voted to bail out the supposed `too big to fail` organizations.

Which was the direct result of the financial industry whining that the proposed regulations would make them less competitive in the markets.

I have an article at home which outlines how the proposed regulations would have either mitigated to a significant degree, or even prevented, the bailout such by requiring higher capital requirements, more diligent use of mark-to-market, risk analysis and so on.

One can blame Congress and the President for agreeing to the bailouts, but there is a direct line between the bailouts and the lack of regulations.

Comment: Re:The whole article is just trolling (Score 1)715

by Alsee (#47975669) Attached to: How Our Botched Understanding of "Science" Ruins Everything

The article is kind of dumb.

You really shouldn't try to use fancy words you don't understand, trying to look smart. That was not Ad Hominem. That was his opening comment giving his opinion of the article (not the person). He then proceeded to follow up his opening opinion with perfectly valid arguments.

It's some guy who isn't a scientist and who doesn't really understand the scientific method arrogantly bitching about how everybody else doesn't really understand the scientific method.

Appeal to authority (arguing that the "authority" is unimpeachable).

You don't understand Argument From Authority either, nor do you understand when it is a fallacy and when it isn't.

That's the *actual* scientific method.

No-true-Scotsman fallacy.

Not only did you get No True Scotsman wrong, you actually have it backwards. It was the author of the "kind of dumb article" that committed the No True Scotsman fallacy. It was the article author who fallaciously tried to exclude science-he-didn't-like as not being "true science".

Controlled experiment may or may not come into it at all.

http://en.wikipedia.org/wiki/S...
Look at where it says "Testing".

I suggest you look at http://en.wikipedia.org/wiki/S... where it says "Testing": Astronomers do experiments, searching for planets around distant stars.
Astronomers, geologists, paleontologists, climatologists, and countless other fields of science are testing scientific theories when they engage in measurements and observations of the real world, which test the predictions of those theories.

But I would like to thank you for pointing out that Wikipedia section. I can see how you could read that section and overlook the example illustrating that observations-testing-predictions are a form of scientific experiment. That section should definitely be more clear. I'll leave a comment to that effect on the Talk page. ~~~~

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Comment: Re:Thats not good. (Score 1)61

by _xeno_ (#47975223) Attached to: jQuery.com Compromised To Serve Malware

It would be nice if the article mentioned what browsers/plugins were vulnerable, wouldn't it? (And does this cover api.jquery.com or just the home page?) Although it wouldn't surprise me that they just don't know yet since jQuery is still investigating.

I'm pretty sure I'm up to date with everything, but...

Comment: Re:The whole article is just trolling (Score 1)715

by Alsee (#47975099) Attached to: How Our Botched Understanding of "Science" Ruins Everything

I think he's saying that we shouldn't be using evolution as a talking point when we want to say "see science works!" because we have no proof that evolution indeed works as Darwin described.

(1) Actually he's doing the standard right-wingnut attack on any science they don't like, primarily evolution and climate, and every field of science that supports them.

(2) Setting aside the poor choice word "proof", I think you underestimate what we've got backing up evolution. We literally have mathematical theorems proving the information-creating process of evolution. Evolution is an applied science, used somewhere or other by a majority of Fortune 500 Companies. (Specifically, software genetic algorithms that evolve "digital DNA". It's a field of programming that can solve categories of Hard Problems that are effectively impossible to solve by any other means.) We also have a continuous and complete fossil record of tens of millions of years of evolution covering much of Phylum Foraminifera. Foraminifera are tiny aquatic animals, most smaller than the period on this sentence. They live in the oceans in vast numbers, continually dying and raining down into sea floor sediment. 1970's deep sea oil exploration started bringing up long drill-cores from the deep seabed. Each core is filled with thousands of perfectly layered Foraminifera fossils. We have an effectively limitless supply of these fossils. And it's not merely every transitional form species. We can continuously trace the transitional forms along a ~150,000 year transition as one species splits into two. The only limitation on time-resolution is the small amount of vertical-mixing caused by living animals which disturb the sediment surface.

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Comment: Re:Aggression in practice, right? (Score 1)330

by _xeno_ (#47975065) Attached to: US Strikes ISIL Targets In Syria

Wow you're dense.

I'm saying that what the US is doing in Syria is exactly equivalent to what Russia is doing in Ukraine.

Because, according to international law, it is.

The sanctions being imposed against Russia are for Russia taking literally the exact same actions the US is currently taking in Syria.

You can argue the relative morality all you want, but we're still, ultimately, invading a sovereign nation.

Comment: Re:Funny how this works ... (Score 1, Insightful)130

by smooth wombat (#47974775) Attached to: Netflix Rejects Canadian Regulator Jurisdiction Over Online Video

Exactly. Look at how great limited regulation fared in 2006-2008 when the financial industry whined and complained about the "burdensome" regulations that were proposed regarding their use of derivatives, capitalization and related matters.

Not having regulations worked out really well, didn't it? It only cost us taxpayers a few billion dollars to clean up the mess.

Comment: Re:The whole article is just trolling (Score 1)715

by Alsee (#47974721) Attached to: How Our Botched Understanding of "Science" Ruins Everything

Which "AGW denying bit" would that be? It can't be the part about observation because it hasn't gotten any warmer for the past 18 years, so there would be no warming to be observed.

When one activist website tell you that the earth is warming, and another activist website tells you that the earth isn't warming, it's a good idea to check the actual scientific data to determine which activist website is getting the facts wrong. Here's an 18 year graph. The earth has in fact been warming over the last 18 years.

Here's the 50 year graph. That's a neat website that lets you generate graphs over any date range. If you want to play with it, just be sure to update the year-values for both series 1 (the red graph) and series 2 (the green graph).

There was also an unexpected surge in heat being pulled from the atmosphere into the deep ocean. This has recently pulled a vast amount of heat off of the typical graphs of surface-level atmospheric temperature. This is why air-temperature-graphs gives a false impression of somewhat slower warming the last few years.

Air is extremely low density. Very little of the global heat resides in the atmosphere, and what does show up in the air is extremely variable as heat shifts between the air and the land&sea. In fact the atmosphere only accounts for 2% of global heat content. The land surface temperatures are about 8%. The massive oceans account for 90% of the planet's heat content. Here's a graph of ocean heat over the last 50-odd years. The vast majority of heat ultimately goes into the oceans. That graph shows that there has been absolutely no slowing in the rate of global heat increase. Global warming hasn't paused. Global warming hasn't stopped. Global warming hasn't slowed.

There doesn't exist ONE scientific body of national or international standing that still denies man-made global warming. The last national or international scientific body to dissent was, comically, the American Association of Petroleum Geologists back in 2007. Yep, even the oil geologists stopped denying it seven years ago.

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Comment: Re:They will never learn (Score 5, Informative)61

by _xeno_ (#47974645) Attached to: jQuery.com Compromised To Serve Malware

According to the article, the library itself wasn't affected.

Plus most people don't use jQuery.com as a CDN. Instead jQuery recommends you use Google's CDN if you want to use a CDN for jQuery.

Of course, this is still bad - I visit jQuery.com fairly frequently to check the documentation. The article doesn't say what was required for the malware to run so I have no idea if I was vulnerable to it or not, but if it was dropped on all pages and not just the home page, I definitely could have been hit by it.

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