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Comment There's no "grey area" (Score 5, Insightful) 246

As an IT professional, you will have access to data that regular employees don't. You keep your mouth shut and you don't snoop. Period. You only look at as much as you have to diagnose and fix problems; the details are irrelevant.

It's called "being professional."

Think of it as the equivalent of lawyer-client or doctor-patient relationships.

Comment Re:Bad seals on the bearings and master bearing (Score 2) 101

Actually, something else is causing the seals to fail on the bearings and master bearing. The sampling pipe was the original theory but it could not account for the damage being done.

Even so, this shows what happens when you plan a one-shot operation with a single point of failure.

In this case, two: the drill itself and the seals. Either one means failure. When it's a one-shot operation with no provision for pause or repair, you're SOL. Fixable in this case? Yeah. For a fortune.

Submission + - How Many Members of Congress Does it Take to Screw in a $400MM CS Bill?

theodp writes: Over at Code.org, they're banging the gong to celebrate that more than 100 members of Congress are now co-sponsoring the Computer Science Education Act (HR 2536), making the bill "to strengthen elementary and secondary computer science education" the most broadly cosponsored education bill in the House. By adding fewer than 50 words to the Elementary and Secondary Education Act of 1965, HR 2536 would elevate Computer Science to a "core academic subject" (current core academic subjects are English, reading or language arts, mathematics, science, foreign languages, civics and government, economics, arts, history, and geography), a status that opens the doors not only to a number of funding opportunities, but also to a number of government regulations. So, now that we know it takes 112 U.S. Representatives to screw in a CS education bill, the next question is, "How many taxpayer dollars will it take to pay for the consequences?" While Code.org says "the bill is cost-neutral and doesn’t introduce new programs or mandates," the organization in April pegged the cost of putting CS in every school at $300-$400 million. In Congressional testimony last January, Code.org proposed that "comprehensive immigration reform efforts that tie H-1B visa fees to a new STEM education fund" could be used "to support the teaching and learning of more computer science in K-12 schools," echoing Microsoft's National Talent Strategy.

Comment Re:Jane/Lonny Eachus goes Sky Dragon Slayer. (Score 1) 342

Again. Yes/No: do you claim the heated plate will remain at 150F after the second plate is added?

Repeat Latour's comment here:

However, the absorption rate of real bodies depends on whether the absorber T (radiating or not), is less than the intercepted radiation T, or not. If the receiver T [is less than] intercepted T, no [net] absorption occurs; if the receiver T [is less than] intercepted T the absorption rate may be as great as proportional to (T intercepted - T absorber), depending on the amounts reflected, transmitted or scattered.

(I have added [net] to indicate his argument is net heat transfer there, as Latour has explained many times elsewhere. I have also replaced "less than symbol" with [is less than] due to Slashdot's character restrictions.)

I repeat: you are completely (and wrongly) ignoring real-world conditions that apply to the experiment.

The experiment requires the passive plate to be some unspecified distance from the heat source. (This is a condition of the experiment; no contact is allowed since this is only about radiative transfer.) And no matter its configuration, it will radiate some of its absorbed energy outward to the chamber walls. This much we know.

The chamber walls C are actively cooled, although at a fixed power input. So it absorbs radiation from the internal space. We know at equilibrium T(c) will always be less than T at the source S: T(c) [is less than] T(s) because the wall is actively cooled. (We know for another reason too, but this is sufficient.)

We also know that the passive plate P will always be at a temperature less than that of the source, for the simple reason that no matter what its position, it does not absorb all the radiation from S. Or even if it did, as in the case of completely enclosing S, it would still re-radiate some of its absorbed energy out to the chamber walls C. Therefore as long as the conditions of the experiment are met, no matter what else varies such as relative mass, in this experiment T(p) will be lower than T(s). The amount is of no consequence, as long as it is non-zero (and it is).

Therefore, from S-B law, we can directly infer the following things:

T(c) [is less than] T(s) [net heat transfer is from source to walls, never the other way around]

T(p) [is less than] T(s) [net heat transfer is from source to plate, never the other way around]

We can also infer from the experimental conditions that T(c) [is less than] T(p), but that is irrelevant to the argument.

When equilibrium is achieved, these conditions still hold.

An elementary, obvious, and perfectly sound conclusion from this is that the source is not made hotter under any of these conditions. Even if plate P completely encloses source S, we know for at least two different reasons (greater radiative area, and the simple fact that it does radiate outward to the wall, which cools it) that T(p) will always be less than T(s), even at equilibrium.

Since the temperature of every other object is less than that of the heat source, there is no net heat flow TO the heat source, therefore the heat source does not become hotter. This is, and has been, the whole of Latour's argument, and it is valid. It is not crazy speculation by some nitwit, it is straightforward application of Stefan-Boltzmann law.

Q.E.D., indeed. If the above inequalities hold (and they do), Latour's conclusion is the only one that is mathematically valid.

Comment Re:Jane/Lonny Eachus goes Sky Dragon Slayer. (Score 1) 342

I meant what I said. If Q1**4 is proportional to Q2**4, then Q1 is proportional to Q2. I did NOT say "directly" proportional. I don't mind being corrected when I make a mistake but that was not a mistake.

More importantly, can we agree that in equilibrium, power in = power out?

No. I am not aware of any "conservation of power" law.

Comment Re:Jane/Lonny Eachus goes Sky Dragon Slayer. (Score 1) 342

I want to clarify my comment above:

The relevant part should have read:

The outward surface S0 (if that is the outward extent of earth system) has a surface area of 1.002 * Earth's non-atmosphere surface), and therefore its temperature will be measurably lower than that of heat source T. And therefore we have a net heat transfer proportional to T - T0, which is a non-zero quantity.

Comment Re:The Free Market has the Technology Now (Score 1) 218

And if one service offers an obstensibly cheaper price but has deficiencies that could actually cost you more money, result in tragedy, etc., how do you know that?

The same way you know that for traditional taxi services: they don't stay in business.

Sheesh. Is this really a question? How do you know when you buy a plum in the supermarket that it isn't poisoned? Is it just a wild-assed guess? Or is it more likely that purveyors of poisoned plums didn't get any repeat business?

Comment Re:At least the Russians are being upfront (Score 2) 167

Because all those bloggers critical of President Obama are being rounded up as we speak...

Russia has a reputation for jailing or even killing critics of Putin or his allies. The last president of the United States accused of that sort of activity against opponents ended up resigning before his inevitable impeachment and conviction. Even in the latest IRS scandal, which may or may not represent targeting of critics by someone in the executive branch, the end result has been quite the opposite to what one would find in Russia.

The US has no lack of problems, and people in positions of power will always tend towards abusing it. But all in all, it's probably the safest place in the world to speak one's opinion without fear of state persecution.

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