In one of the links, a caption says "She knows. He's been playing Facebook games." I ask you, the Slashdot jury, who is more likely to be playing Facebook games: he or she?
The Holy Roman Empire was a German empire "from 962 to 1806 in Central Europe". The decline of the (western, not Holy) Roman Empire (which you're presumably referring to with the phrase "panem et circenses") "occurred over a period of four centuries, culminating on September 4, 476".
Another example of quasi-particles are phonons. Maybe easier to understand. Phonon makes you think of sound (phonograph). What is sound? It's waves of compression of air molecules. Sound can travel through solids, too, in which case it's waves of compression of the molecules in the solid. Imagine you have a lattice (regular array) of molecules, like a solid crystal, and you tap it on one side. Where you tap, it will push the molecules closer to other molecules, and those will push away other molecules, which then get close to other molecules, which get pushed away, etc.. You can pretend the molecules are connected by springs. (If you take calculus through differential equations, you'll probably solve this kind of boundary-value problem.) So a wave travels through the solid.
The cool thing, mathematically, is that these waves bounce around inside the "box" of the solid as if they were billiard balls (though usually I think the phonons pass through each other, which isn't how billiard balls are, but I mean they bounce off the "walls"). So you can effectively stop thinking of molecules jiggling on springs, and instead think of a kind of "gas" of phonons bouncing around in a box, as if the waves are really particles. That's why they are "quasi" particles. They're not real, but they behave like they are. And like another poster pointed out, how exactly do you define a "particle" anyway?:)
Now where things get really cool is when you shine laser light on a crystal. What is laser light? Either you think of light as electromagnetic waves, or you think of it as particles called photons. (Photo makes you think of light, right?:) So you can think of laser light as a bunch of photons with pretty much all the same energy (plus or minus some relatively small margin; in real experiments you even pass laser light through filters to make the range of energy/wavelength/frequency even narrower). In a technique called Raman spectroscopy (among other techniques), you shine a laser on a crystal and observe the light that bounces back. What happens here? Imagine one of the photons of light going in. It has a certain energy. The photon goes into the crystal and bounces off a phonon (again, like billiard balls). The photon comes back out with more or less energy. Say that it comes out with less energy. Where did that energy go? It smacked into the phonon! So you can actually measure how a material likes to vibrate by looking at the light that bounces back. The peaks in that spectrum of light (measured relative to the energy of the laser) correspond to the phonons. You can even get information by looking at the height and width of the peaks.
So I hope this gives a simpler example of a quasi-particle, and how it can be useful to think this way. The article is a bit misleading, referring to breaking apart an electron, as if it was just one electron. But really they mean a bunch of electrons, acting together in (as the article also said) a "one-dimensional chain of atoms". So very roughly, maybe you can imagine something like a phonon in a "lattice" of electrons.
I read a book recently (I won't plug it, but it was a popular book on information theory...) which mentioned there was (were?) a book published (hundreds of years ago, is my recollection) that simply listed a whole lot of random numbers. So basically for scientists/mathematicians who needed a random source, they could flip to a, uh, random page and read off some numbers. Probably nowadays easier than reading your sound card, at least on unix-like systems, is to read from/dev/random.
It's something to look forward to. Entertainment (games in particular) is naturally going to evolve, and new hardware is part of that. It must be hard, though, to introduce new hardware. How many people buy joysticks to play a flight sim? Not many. But somehow the Wii (and followers) edged its way into things, so it's not impossible. A recent Slashdot article was about Kinect voice-controlled shouts for Skyrim. So there are lots of possibilities. Although, like others clearly;), I'm still looking forward to Half-Life 3, I think it's fair for Valve as a game company (and owner of Steam) to be exploring other gaming possibilities.
I found this article to be reasonable, except perhaps for the (tongue-in-cheek?) "Can we tolerate fake of inferior products with the aim of promoting the free market?" But does that mean I think a government should be taking down blog posts? No. I think the way to combat this is to embrace their logic. If social stability is of such importance, then argue, as the post does in the final paragraph:
While cracking down on rumors that endanger public and state security, authorities should also study the roots of rumors and public sentiment. A more open and transparent government and the immediate issuance of relevant information could improve the government's credibility and better dispel rumors.
And what kind of social stability is promoted by fear of reprisals for having opinions?
Looks pretty cool, though I think they shouldn't have the game character repeat the shout if you already shouted it.
To be honest, I wouldn't be able to remember the shout names. (I always relied on my bow. Yes, I play the archer-thief, don't like hack/slash.:P) I'm sure my 10-year old nephew, who's read the strategy guide and knows the name of all the characters and creatures and quests and artifacts and holds and..... would be able to though, heh.
Exactly the same for me. I've wanted to file online for years, but each year I bail out as soon as I start.
I live in the Netherlands for now, and taxes are so much easier here (and it's such a pain still having to file in the US; I've never found expats of any other country who have to file income taxes in their home country when they work abroad....). First, if you just get income from your job, there's nothing at all to do. The taxes are already paid, and you don't have to file a form (if you owe, I assume they'll send an "acceptgiro" invoice that you pay through online banking). I didn't realize that, so I filed it electronically: an application from the government site (though closed-source, I think), available for Windows, Mac, and Linux. The only annoyance was getting a digital ID for signing, but that was just a web form (with a private company...) and then waiting a few days.
You have freedom of speech, you don't have the right to force people to listen. Which is good because otherwise I might have to read the rest of your post, where you draw a false-equivalency with China, sprinkled freely with fact-free pessimistic predictions of the future. You fail at the basic logic fallacies Richard Feynman warned about
LFS is a great learning process that shows you exactly WHAT makes your Linux tick, and what packages depend on eachother.
Hello, the 90s called...;) I guess my path through distros was a way of getting away from dependency hell. But it's a good sign: Linux has arrived on the desktop if people are now encouraged to learn about their distro's inner workings, as opposed to being forced to in order to get it working!
From the article, "liquid water is key to the evolution of life" and "the radiation breaks the water molecules down". That means it's...less likely to contain life, right? Therefore it should...get more funding?
There might be something to giving them more taxes if they competently used the existing taxes. For example, our elected representatives could demonstrate, "here are the sensible ways we used the existing tax dollars to have this and this positive impact". "This method had this effect measured by this reasonable metric, and we think (for this and that reason) if we could dedicate X% more dollars it would lead to positive result Y". Instead, we get things like the TSA theater, trillion-dollar wars in Iraq and Afghanistan, bank bailouts, broken education, social security, and health care. How about starting with something with a real impact on violence: like not invading a few countries and killing real people? Predator drones -- surely you've seen videos online where they mow people down like in a computer game? That's real life, though. How about more funding for alternative energy sources, make it unnecessary to invade oil-rich countries? Start by not glorifying the killing of people in the name of the USA, maybe you'll have a real impact on how American kids perceive violence. Or take the popular route for your voters, suggest taxing games that are "violent" according to some arbitrary committee (paid for by....?), maybe that will work....
Slashdot Mirror
Better to use crucified Jesus, then we could really see the feces hit the rotor.
You seem a bit sensitive about people who are too sensitive.
Einstein had learned about [tensors], with great difficulty, from the geometer Marcel Grossmann.
Getting a degree is just a different game. Thanks for not playing!
In one of the links, a caption says "She knows. He's been playing Facebook games." I ask you, the Slashdot jury, who is more likely to be playing Facebook games: he or she?
We make legislation to make smoking annoying, because it is harmful. Why not do the same with television?
Have you maintained any (large) body of code that isn't a nightmare?
And, like, an elephant is roughly like the earth, massive with a gooey inside, so it's not so crazy to think that Saturn is a whale wearing a tutu.
The Holy Roman Empire was a German empire "from 962 to 1806 in Central Europe". The decline of the (western, not Holy) Roman Empire (which you're presumably referring to with the phrase "panem et circenses") "occurred over a period of four centuries, culminating on September 4, 476".
Perl 5 continues to be strongly developed. Perl 6 is not likely to catch on any time soon, if ever.
Another example of quasi-particles are phonons. Maybe easier to understand. Phonon makes you think of sound (phonograph). What is sound? It's waves of compression of air molecules. Sound can travel through solids, too, in which case it's waves of compression of the molecules in the solid. Imagine you have a lattice (regular array) of molecules, like a solid crystal, and you tap it on one side. Where you tap, it will push the molecules closer to other molecules, and those will push away other molecules, which then get close to other molecules, which get pushed away, etc.. You can pretend the molecules are connected by springs. (If you take calculus through differential equations, you'll probably solve this kind of boundary-value problem.) So a wave travels through the solid.
The cool thing, mathematically, is that these waves bounce around inside the "box" of the solid as if they were billiard balls (though usually I think the phonons pass through each other, which isn't how billiard balls are, but I mean they bounce off the "walls"). So you can effectively stop thinking of molecules jiggling on springs, and instead think of a kind of "gas" of phonons bouncing around in a box, as if the waves are really particles. That's why they are "quasi" particles. They're not real, but they behave like they are. And like another poster pointed out, how exactly do you define a "particle" anyway? :)
Now where things get really cool is when you shine laser light on a crystal. What is laser light? Either you think of light as electromagnetic waves, or you think of it as particles called photons. (Photo makes you think of light, right? :) So you can think of laser light as a bunch of photons with pretty much all the same energy (plus or minus some relatively small margin; in real experiments you even pass laser light through filters to make the range of energy/wavelength/frequency even narrower). In a technique called Raman spectroscopy (among other techniques), you shine a laser on a crystal and observe the light that bounces back. What happens here? Imagine one of the photons of light going in. It has a certain energy. The photon goes into the crystal and bounces off a phonon (again, like billiard balls). The photon comes back out with more or less energy. Say that it comes out with less energy. Where did that energy go? It smacked into the phonon! So you can actually measure how a material likes to vibrate by looking at the light that bounces back. The peaks in that spectrum of light (measured relative to the energy of the laser) correspond to the phonons. You can even get information by looking at the height and width of the peaks.
So I hope this gives a simpler example of a quasi-particle, and how it can be useful to think this way. The article is a bit misleading, referring to breaking apart an electron, as if it was just one electron. But really they mean a bunch of electrons, acting together in (as the article also said) a "one-dimensional chain of atoms". So very roughly, maybe you can imagine something like a phonon in a "lattice" of electrons.
I read a book recently (I won't plug it, but it was a popular book on information theory...) which mentioned there was (were?) a book published (hundreds of years ago, is my recollection) that simply listed a whole lot of random numbers. So basically for scientists/mathematicians who needed a random source, they could flip to a, uh, random page and read off some numbers. Probably nowadays easier than reading your sound card, at least on unix-like systems, is to read from /dev/random.
And crates, yes! :)
It's something to look forward to. Entertainment (games in particular) is naturally going to evolve, and new hardware is part of that. It must be hard, though, to introduce new hardware. How many people buy joysticks to play a flight sim? Not many. But somehow the Wii (and followers) edged its way into things, so it's not impossible. A recent Slashdot article was about Kinect voice-controlled shouts for Skyrim. So there are lots of possibilities. Although, like others clearly ;), I'm still looking forward to Half-Life 3, I think it's fair for Valve as a game company (and owner of Steam) to be exploring other gaming possibilities.
I found this article to be reasonable, except perhaps for the (tongue-in-cheek?) "Can we tolerate fake of inferior products with the aim of promoting the free market?" But does that mean I think a government should be taking down blog posts? No. I think the way to combat this is to embrace their logic. If social stability is of such importance, then argue, as the post does in the final paragraph:
And what kind of social stability is promoted by fear of reprisals for having opinions?
Looks pretty cool, though I think they shouldn't have the game character repeat the shout if you already shouted it.
To be honest, I wouldn't be able to remember the shout names. (I always relied on my bow. Yes, I play the archer-thief, don't like hack/slash. :P) I'm sure my 10-year old nephew, who's read the strategy guide and knows the name of all the characters and creatures and quests and artifacts and holds and..... would be able to though, heh.
Exactly the same for me. I've wanted to file online for years, but each year I bail out as soon as I start.
I live in the Netherlands for now, and taxes are so much easier here (and it's such a pain still having to file in the US; I've never found expats of any other country who have to file income taxes in their home country when they work abroad....). First, if you just get income from your job, there's nothing at all to do. The taxes are already paid, and you don't have to file a form (if you owe, I assume they'll send an "acceptgiro" invoice that you pay through online banking). I didn't realize that, so I filed it electronically: an application from the government site (though closed-source, I think), available for Windows, Mac, and Linux. The only annoyance was getting a digital ID for signing, but that was just a web form (with a private company...) and then waiting a few days.
Mass Effect players tweaked their games endlessly to get a perfect ending across THREE games one into the next all culminating at that final point.
And after all that it turns out that all that tweaks was totally wasted.
Something to consider before playing a computer game for hundreds of hours: it wasn't ever really going anywhere anyway.
You have freedom of speech, you don't have the right to force people to listen. Which is good because otherwise I might have to read the rest of your post, where you draw a false-equivalency with China, sprinkled freely with fact-free pessimistic predictions of the future. You fail at the basic logic fallacies Richard Feynman warned about
Nice appeal to authority there.
'Yahoo! has invested substantial resources in research and development through the years', so "new CEO Scott Thompson is planning to lay off workers in public relations, marketing, research...." [stop reading here].
LFS is a great learning process that shows you exactly WHAT makes your Linux tick, and what packages depend on eachother.
Hello, the 90s called... ;) I guess my path through distros was a way of getting away from dependency hell. But it's a good sign: Linux has arrived on the desktop if people are now encouraged to learn about their distro's inner workings, as opposed to being forced to in order to get it working!
Firefox version 3.6.0 was released on January 21, 2010. Firefox version 4.0 was released on March 22, 2011. How is this "many years", again? Less than one year ago 3.6 became an "older" version of Firefox.
From the article, "liquid water is key to the evolution of life" and "the radiation breaks the water molecules down". That means it's...less likely to contain life, right? Therefore it should...get more funding?
The sun's mass is about 0.9% oxygen. Therefore there should be more funding of research into the sun, because it might (not?) contain life?
There might be something to giving them more taxes if they competently used the existing taxes. For example, our elected representatives could demonstrate, "here are the sensible ways we used the existing tax dollars to have this and this positive impact". "This method had this effect measured by this reasonable metric, and we think (for this and that reason) if we could dedicate X% more dollars it would lead to positive result Y". Instead, we get things like the TSA theater, trillion-dollar wars in Iraq and Afghanistan, bank bailouts, broken education, social security, and health care. How about starting with something with a real impact on violence: like not invading a few countries and killing real people? Predator drones -- surely you've seen videos online where they mow people down like in a computer game? That's real life, though. How about more funding for alternative energy sources, make it unnecessary to invade oil-rich countries? Start by not glorifying the killing of people in the name of the USA, maybe you'll have a real impact on how American kids perceive violence. Or take the popular route for your voters, suggest taxing games that are "violent" according to some arbitrary committee (paid for by....?), maybe that will work....
Though I notice those cultures also tend to be short, too, as if malnourished. I'd rather look at whatever the Dutch are eating.