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Comment Re:Calibration (Score 2) 194

Ablation can in theory remove single atomic layers with thermal damage only a few atoms deep to the underlying surface.

So the damage to the surface is only a few times larger than what was removed?

The damage is only a few atomic layers deep, more or less independent of how much material is removed.
A large limitation to how much you can remove is that you build this huge largely opaque cloud of debris blasting off the surface of the material so you can't get new photons into the surface anymore, but you can peel stuff off a few atoms in a burst or a few dozens of micrometers in a burst, with the same very thin heat affected zone at the surface. (Another is that all the stuff you just blasted off immediately sticks to the front of your objective lens, but they don't last long anyway when you have this many photons going through them: objective mirrors last longer but still get covered in junk. Some interesting stuff being done using liquid waveguides through which the laser moves and which wash off the debris, but then you have to not vaporize/ablate your liquid waveguide. And at least with the UV stuff we were doing, even the atmosphere absorbed giant amounts of the energy, so we had to do it in a vacuum and that made the crap-sticking-to-the-lens problem even worse.) My recollection is that people were trying to use laser ablation to do extremely thin heat-treatment, like surfacing treatment, but couldn't actually get it thick enough to make a measurable difference in wear characteristics, but A: I may misremember and B: people may be better at this now, so that bit could be complete hooey. I got out of high-energy lasers like fifteen years ago, when I realized that fully half my coworkers had pie blindness: they'd managed to damage some part of their eyes so they were missing some of their visual area, and stuff may have progressed a lot since then.

Comment Re:Calibration (Score 5, Informative) 194

Sorry to reply to myself but since Wikipedia doesn't actually bother to talk about mechanisms, I will. You can remove a surface with a laser through heating, which applies enough photons to the surface atoms that they vibrate loose, which is a slow process that transmits piles of heat downwards. Or you can use a laser whose wavelength is shorter than the strength of the sigma electron bonds in the material, in which case the electrons absorb the photons, get popped into a higher orbital, and the bond that held the two atoms together simply isn't there anymore and the now free atoms can just drift away. There is in theory no heat generated at all. In practice there are so many photons coming in all at once that there's a metric buttload of photons being absorbed by everything, so what actually happens is the wavefront hits and turns the first couple of atomic layers into a plasma, that erupts away from the surface and leaves the underlying surface close to untouched. So that's the mechanistic difference between burning and ablation: photon flux and wavelength.

Comment Re:Calibration (Score 1) 194

Seems like it would take some careful calibration to make a laser that would burn off wet leaves plastered to the rail and yet not soften the hardened steel of the rail that's going to have a multi-ton train passing over it in seconds.

If I were doing this -- and I'm not claiming it's feasible, but let's call this a gedankenexperiment -- I'd use a system set up to ablate the material, which Wikipedia says so I don't have to: "Very short laser pulses remove material so quickly that the surrounding material absorbs very little heat, so laser drilling can be done on delicate or heat-sensitive materials," and " laser energy can be selectively absorbed by coatings, particularly on metal, so CO2 or Nd:YAG pulsed lasers can be used to clean surfaces, remove paint or coating, or prepare surfaces for painting without damaging the underlying surface. High power lasers clean a large spot with a single pulse."
When I was working with deep UV lasers (and got to learn what fluorine gas smells like -- elmer's glue, in case you were wondering, at least when it's dilute -- we were able to strip physical vapor deposition copper and nickel off polyimide film without damaging the polyimide. (We needed geometries too fine for chemical etching.) Removing organic material off steel should be much easier. Ablation can in theory remove single atomic layers with thermal damage only a few atoms deep to the underlying surface.

Comment Re:Too lazy to protect themselves (Score 1) 528

I mean even shutting down the gym (who knows why, terminals?

My company, which isn't quite as bit as Sony, but close, has badge access to every door in the building besides personal offices, with badge access control handled by servers located at corporate HQ. If you don't keep up with your ESD training, you're automatically barred from the labs, for instance. If Sony has something similar and they start taking stuff offline to stop leaks, there will be lot of side-effects.

Comment Is Bloomberg the New Buzzfeed? (Score 5, Informative) 461

What the hell is up with the title of this article? Nowhere did I find any indication of anyone being "scared" or "frightened." On the contrary the article presents contradicting information:

Still, the Edison Electric Institute, a trade group representing America’s investor-owned utilities, recently announced that its members will help to encourage electric vehicle use by spending $50 million annually to buy plug-in service trucks and invest in car-charging technology. “Advancing plug-in electric vehicles and technologies is an industry priority,” said EEI President Thomas Kuhn.

Uh, "advancing as a priority" is actually the opposite of fear.

Southern California Edison is planning to spend about $9.2 billion through 2017 to allow the two-way flow of electricity on its system, said Edison International CEO Ted Craver. “We are certainly big supporters of electric transportation,” Craver said. He added: “That electric car isn’t just going to stay at home. It’s going to go other places. It’s going to need to get charged in other places. And I think our ability to provide that glue for all those things that are going to plug into that network is really how we see our core business.”

Again, sounds positive. Actually the only negative thing in the article is that electric cars might cause a load our infrastructure isn't ready for -- to the contrary a solar charging station in the home would mitigate this. Is the new journalism format to title your articles with a thesis directly contrary to all the actual evidence you're about to present?

Comment Re:Sounds good to me (Score 1) 238

You should get a cert warning if they are using any kind of SSL decryption. Also, *most* companies that I know use such things specifically exclude banking and medical sites from decryption for legal reasons.

Cool, thanks. I trust my corporate overlords and potential rogue elements within IT about as far as I can throw them, so I try hard to restrict what I do online to let them see as little as possible.
Well, except for this, which is going through the internet in plaintext. Yay.

Comment Re:Sounds good to me (Score 1) 238

Mod parent up. I was going to post the same thing. There are numerous appliances and software solutions used by enterprises to do this, but to do it seamlessly you have to install a new certificate on the client machine.

Maybe you'd be the correct person to ask. I'm worried about exactly this, so as I have enough admin rights on my company computer to install software, I installed virtualbox and am running a linux system within that. My understanding is that since I performed the linux install, when I fire up a browser within the linux install and use https, I should not be susceptible to router-in-the-middle https proxy attacks -- or, at least, I should get a warning the first time I try to go to a site with https, letting me know about a certificate mismatch. Is that correct? or am I still open to the possibility of giving every IT person in my company access to my bank account if I were to do online banking from work? (I don't, but I do use gmail, which is https.)

User Journal

Journal Journal: In Passing: if talking about pesos, there'd be more zeroes

Overheard a coworker in mid sentence, "but if we were talking about pesos, there'd be _a lot_ more zeroes"

On a side note, i've been at the office for a year. How do i know? Building access was denied. Happy anniversary...

Comment Re:we ARE different (Score 1) 355

Higher IQs are correlated with a long history of urbanization and economic specialization, where higher IQs provide a selective advantage.

There's no arguing this. But, from what I've read about James Watson, he never said anything close to this. Instead, I can even find on his wikipedia page this quote from one of his books:

He writes that "there is no firm reason to anticipate that the intellectual capacities of peoples geographically separated in their evolution should prove to have evolved identically. Our wanting to reserve equal powers of reason as some universal heritage of humanity will not be enough to make it so"

So it's related to a long history of urbanization and economic specialization? And also Watson's unequal powers of reason? What is he implying if not to say that genetically some people are born without the equal "powers of reason"? He didn't quite say that due to "a long history of urbanization and economic specialization" instead he said due to geographic separation followed by their evolution. Watson's position as a genetic researcher commenting on something that is almost certainly attributed to socioeconomic status is strange, wouldn't you think? Was he commenting on this as an economist or perhaps historian?

I also like how you link to wikipedia pages but not their internal discrepancies on your open and close case that IQ is inherited. Including this quote from your first link:

Eric Turkheimer and colleagues (2003) found that for children of low socioeconomic status heritability of IQ falls almost to zero.

From this source.

You present a perfectly acceptable and fairly logical argument about the advancement of some cultures outpacing others. One need only read "Guns, Germs & Steel" where this sort of thing is discussed in a very sound and well researched way. Do we raise our pitchforks and chase after Jared Diamond with fervor? Not at all. Then again, his arguments didn't rest entirely upon some imaginary gene expression he just hadn't found yet.

Your "political correctness" claim is largely rubbish. While it may appear a knee-jerk reaction, this is the case of people objecting to a statement with no underlying scientific basis while Watson makes claims that we should be able to isolate the "Intelligence Gene." Have we had success in isolating such a gene from the Ashkanazi? Furthermore Watson implies (though never directly says) that lack of similar genes is what keeps Africa repressed -- while making zero reference to the reverberating effects of hundreds of years of European colonizations and their leeching of wealth & resources.

Comment Of Course It Was (Score 3, Insightful) 355

Your comment is extremely racist.

You're goddamn straight it is. The point is that any population -- no matter how high and lofty it is can be the target of stupid shit attributed to their genetic structure with "just so" fallacies. He makes inflammatory statements, doesn't even offer correlation as evidence for them and completely ignores socioeconomic conditions of even the past two hundred years.

How hard is it to turn James Watson's high minded lofty DNA superiority complex against his home city? Not hard at all, it turns out. Simply cherry pick from painfully recent history the horrible stereotypes and wars that their ancestors have and totally ignore any outside forces like ... oh, I don't know, the slave trade ... and then just "painfully" wish you were wrong. Notice how I apologized for having to be the one to first acknowledge something I'm not proving.

What blows my mind is that Africa was for tens of thousands of years in the same state that the rest of the world was in -- hell it's the birthplace of homo sapiens. And the time scale we need to talk about for DNA to change is at the very least tens of thousands of years. 25 million years of human evolution and James Watson measures 'genetic skin-color-intelligence correlation' from his apparently very short knowledge of history. Let's be generous and say he actually considered the past two thousand years which would be odd that he chose not to acknowledge that Europe's age of colonialism had something to do with Africa's current state.

Just like my post listed zero gene expressions, I'm not aware of any he's presented backing his statements. Furthermore, how would one divorce the nature versus nurture in such a test? The long history of racial discrimination the world over would need to be carefully controlled out of the experiment and the fact of the matter is that you can't. I'm not a Nobel prize winning geneticist and even I recognize this.

Comment Chicago, Illinois: The Real Problem (Score 5, Insightful) 355

Do you ever notice how enamored with American football the Chicago population is? How much money they dump into the Chicago Bears? Oh, how I wish that I would be wrong but often science is meant to be inflammatory. The testing simply shows that the people of Chicago are slovenly drunks who cannot help but repose in sloth upon their reclining chairs in their own pitiful squalor. How can we help the people of Chicago when all of our policies revolve around thinking of them as good decent hardworking people?

About a third of the Chicago population is German. Genetically, therefore they have instilled in them a 'Crazy Fourth Reich Fever' that millennia of conditioning by the BLACK Forest of Germany and they simply only want to fight and invade other peaceful peoples that are doing nothing but contributing to the advancement of the human race. Alas, my mind is tortured that nature could be so cruel as to instill a fine specimen like the German with such brutal and total warring instinct. But we simply cannot be able to even begin to help Chicago out of shit-hole status unless we come to terms with their genetically corrupted DNA structure. I know this may seem shocking to you lay people but I have suffered as Galileo has suffered. Science requires I tell you the truth that I seem to have no scientific basis for yet I know deep down in the pit of my Swedish-American stomach to be true.

Another third of the Chicago population is Irish. Genetically the Irish have evolved in an inherently beautiful land that has caused them to drink heavily whenever outside of this land. This is to deal with the squalid landscapes of Chicago. Blame them not, they are only following the unavoidable bonds of nature that tie into their DNA and make them wholesale worthless drunks. There is no hope for them and, verily, we cannot hope to even get them into rehab until we understand that there simply is no rehabilitation for them. Their origin country has a short pitiful record that I can't seem to find records on regarding any suppressors or instigators prior to being a poor island nation hell bent on alcoholism. Oh, if only my scientific inklings were wrong! How I wish I wasn't the one that has to break the news to you. Woe is all that I can feel for having to inform you that genetically the Irish are inferior.

The final third of the Chicago population is Polish. The Poles of Chicago are a daft and rotund people but it is not their fault. The DNA has been shaped by thousands of years of unhealthy food. The cold winters of Poland and Chicago force them indoors where they cannot possibly be industrious but have to sit at microscopes and furrow their brows in a vain attempt to understand these things that I have discovered. Even my high minded Libertarian business attitude can't provide enough jobs for these idle drones. Genetically they suffer from 'Polack Slack' and our policy towards helping them past working on the dock and losing weight will forever fail until we come to accept this. It pains me so to break this news to you but down in my genetically superior innards this idea has been borne and I know it to be true. I know it.

The tests indicate that our great nation would probably be more effective if Chicago and its descendents didn't exist at all. Genetically they will forever be poor and stupid, attached to the glass teat clamoring for more concussions while wallowing about in their fetid sties. Drunk and unable to form simple sentences, our once prosperous country will be held back from truly succeeding.

Ball's in your court, James.

Comment A what? (Score 4, Insightful) 139

>your dreams of tech as a clique-free meritocracy

How is a meritocracy not just another type of clique?
How is hiring people for their excellent social skills not a meritocracy?
There are so many implicit values embedded in the statement that it becomes a declaration of an extremely specific type of workplace the submitter (or editor) wants and thinks everyone else should want as well. It's the equivalent of the guy without a knife asserting that the guy with the knife should drop it and fight like a man.

Comment Re:Slashdot, once again... (Score 1) 289

Believe me, Americans are baffled by the religious extreme in our country too. I dont think i will ever go to Utah, for any reason because of extreme theocratic control. Sure its still America, but your neighbors will be pricks if you arent one of them (mormon)

I hate to defend institutions I don't like, but.. give Utah a chance. It's really beautiful, like, some of the most beautiful geology in the whole country. I spent last weekend there, as I have many previous weekends. Mormons are individually pretty nice people, despite the history of the church and many of its current political activities, and if you don't live there you don't get the shunned and isolated feeling that non-mormon residents get. Even rural towns now have coffee shops and places that serve beer.
For hostility and small-town religious closemindedness, northern Wyoming, northern Idaho, and North Dakota all feel far worse than Utah, to me.

Comment Re:Slaves are always cheaper than the free (Score 3, Interesting) 454

When will we finally get to a ruling class no longer pining for the pre-civil war days?

A friend who teaches economics was posting about this the other day. Her contention is that for all of history until the 1800's, it was fairly easy to just leave and go find some subsistence environment, so if you wanted workers you had to enslave them and force them to work for you. Now that it's not generally possible for most people to find environments for subsistence lifestyles, there's no longer any need to enslave people. They have to find jobs to survive. At that crossover, work stopped being something the lowest class of society did under force, and became something that was considered a privilege.

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