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User: blueg3

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Comments · 4,435

  1. Re:Don't *ask* on Facebook: Legal Action Against Employers Asking For Your Password · · Score: 1

    It's two-factor in that they send you an authentication code via text message.

  2. Re:Don't *ask* on Facebook: Legal Action Against Employers Asking For Your Password · · Score: 1

    You should be using Facebook's two-factor authentication. Your employer could get around that by using your computer to log in to your Facebook account, in which case they lose the ability to be untraceable. If you're watching for it, it's never quiet.

    Of course, what you really should be doing is checking Facebook on your smartphone that doesn't talk to your company's wireless. Then they don't even have evidence that you're wasting company time.

  3. Re:5th Amendment on Megaupload Host Wants Out · · Score: 1

    Wait, I can make backups of my money? Please explain.

  4. Re:A Solution! on Liberating the Laws You Must Pay To Read · · Score: 1

    Do keep in mind that for anyone in industry, this documentation does not cost a bundle. The average cost of the documentation they purchased is about $100 each. Cheaper than a textbook.

  5. Re:Context? on Apple to Buy Back $10bn of Its Shares and Pay Dividend · · Score: 2

    The buyback is intended to offset exercised employee stock options, so the net effect is intended to be that the existing shares retain their current value (rather than being diluted by the new shares).

  6. Re:future weapons ? on Journalist Gets Blasted By the Pentagon's Pain Ray — Twice · · Score: 1

    The separation between the events is spacelike, so there cannot be a causal relationship between them and there exists a reference frame where they are simultaneous. That's as simultaneous as anything gets.

  7. Re:Pointless on Solving Climate Change By Bioengineering Humans? · · Score: 1

    He might manage to make us allergic to hemoglobin

    You can't, really. Genetic modification of already-living beings is difficult at best. Genetic modification is almost always done to a new generation because it's simpler. It's not that much simpler, though, so you of course have to do trials first. A hemoglobin allergy would kill a test subject so early on that it would clearly be a failed trial.

    Usually the unintended effects you have to worry about with genetic modification are the subtle but insidious ones, because you're unlikely to spot them early on.

  8. Re:Spirit on IBM Scientists Measure the Heat Emitted From Erasing a Single Bit · · Score: 1

    It is in the spirit of what Landauer was considering. The larger question is if information entropy and thermodynamic entropy are related.

  9. Re:Becareful coke addicts.. on Coca-Cola and Pepsi Change Recipe To Avoid Cancer Warning · · Score: 1

    It is exactly like saying that, if drowning was a similar process. Probability of drowning isn't linearly related to dose of water, though.

  10. Re:Easy fix? on TSA 'Warning' Media About Reporting On Body Scanner Failures? · · Score: 1

    Yes, I should have clarified. The TSA's site.

    I haven't seen manufacturing specs available. Dosage considerations are substantially discussed in their patent, but that's not a reliable source of information.

  11. Re:What I'm wondering is... on TSA 'Warning' Media About Reporting On Body Scanner Failures? · · Score: 1

    Because people are already concerned about the amount of exposure they are getting from one scan, let alone two.

    People are concerned about anything you can convince them to be concerned about. For lawmakers, it's terrorists. For Slashdot commenters, it's trivially small amounts of radiation. For the general public, it's anything that makes a good image and story on the TV news.

  12. Re:Easy fix? on TSA 'Warning' Media About Reporting On Body Scanner Failures? · · Score: 1

    It's about 2 microrem per scan. A third party has tested many of the machines and the test results are posted on the TSA's website.

  13. Re:Easy fix? on TSA 'Warning' Media About Reporting On Body Scanner Failures? · · Score: 1

    Where'd you come up with that? The results of the radiation dosage measurements are posted on their website. It seems weird that they would willingly tell you classified data.

  14. Re:Easy fix? on TSA 'Warning' Media About Reporting On Body Scanner Failures? · · Score: 1

    TSA had refused to do a health study

    You can't do a direct health study at that low of an incidence rate. You could do basic research on the health risks of radiation, but we've already done that. You can have a third party come and measure the output dosage of the scanners and use our knowledge of radiation health risks to establish the level of risk, but they've already done that, too.

    so even assuming I trust everyone equally, that's a 50-50 risk that TSA assertion is wrong.

    No, it means there's an unknown risk. I refer you to The Daily Show for a better understanding of probability.

  15. Re:Warned about what? on TSA 'Warning' Media About Reporting On Body Scanner Failures? · · Score: 4, Insightful

    That's right. American citizens are being disappeared by the government on a daily basis. Apparently either their friends and family never notice or Big Media is in on it and so you never see a story about it...

  16. Re:Glowing metal on LED's Efficiency Exceeds 100% · · Score: 1

    Not due to thermal radiation. Thermal radiation is, more or less, a fixed function of temperature regardless of the material.

    There are of course plenty of ways of producing white light at room temperature if you supply electricity -- like LEDs.

  17. Re:Glowing metal on LED's Efficiency Exceeds 100% · · Score: 2

    I've always wondered how glowing metal aligns with the second law of thermodynamics. It seems to directly convert heat (lower order energy) to light.

    Heat is not an inescapable sink of energy. It's just that at a large scale, entropy (including heat) must increase.

    When metal glows when hot is it consuming anything or utilizing the difference in temperature in some way?

    It's losing heat. If a block of metal emits 1 J of light, it cools by 1 J.

    Or said another way, if you put a piece of metal in a perfectly insulated hot box would it still glow forever?

    A piece of metal in an insulated box, as one would normally think of it, still has two items interacting thermodynamically: the block of metal and the inside of the box. If the metal is magically suspended in the box and the box otherwise contains a vacuum, then there is no conduction or convection between the box and the block. There is still, however, radiative heat transfer -- the light the block is emitting. If the inside of your box is a perfect mirror, finally you will have an insulating box that is not heated by the block. In this case, the block will glow forever -- but that's because the light it emits due to heat reflects off of the box and is reabsorbed by the block, heating it. (In other words, if it emits 1 J of light, it cools by 1 J, but then absorbs the same 1 J of light, heating by 1 J.)

  18. Re:Which is an... odd way to talk about graphics on Apple Unveils New iPad · · Score: 1

    This is probably true for the number 4. Often people cite (multiprocessors x units per multiprocessor x width of SIMD unit) or something equally silly as the "number of cores". At least in the nVidia architecture, the best analog of a "core" is a multiprocessor, since they are able to act truly independently of one another.

  19. Re:Which is an... odd way to talk about graphics on Apple Unveils New iPad · · Score: 5, Informative

    But in general it can't. GPUs are designed differently and don't actually run a large number of different shaders in parallel. They use a combination of multicore processing and data-parallel execution to run the same shader (or a small number of shaders) on a large pool of data in parallel. A lot of it is more similar to SIMD instructions available on many CPUs than multiple cores.

  20. Re:FYI on The Ineffectiveness of TSA Body Scanners · · Score: 1

    That's a millimeter-wave scanner, not a backscatter scanner.

  21. Re:Perhaps study these treatments scientifically? on Growth of Pseudoscience Harming Australian Universities · · Score: 1

    Some scientists do not think it is worth their time to study things that they have already decided are not worth their time to study.

    That's tautologically true.

  22. Re:Next question on Nearly Half of American Adults Are Smartphone Owners · · Score: 1

    50% are smarter than the median.

  23. Re:and the rest of the majority on Nearly Half of American Adults Are Smartphone Owners · · Score: 1

    That's about what the majority of computer users do all day long, too.

  24. Re:No on Ask Slashdot: Using Company Laptop For Personal Use · · Score: 1

    Say what you will about Bradley Manning, but "trustworthy employee" doesn't really strike me as an apt label.

  25. Re:No, there's no need on Ask Slashdot: Using Company Laptop For Personal Use · · Score: 1

    And are there actually SMM keyloggers that are loaded via the BIOS available, or did you just hear about SMM hacks from Rutkowska and assume that there must be?