The junky 4gb ssd that came with my eee 900 died inside of a month. The 16gb OCZ SSD that I replaced it with has been going strong for a year now though/me crosses fingers
My EEE's 4GB SSD just died a couple of days ago; the 16GB secondary SSD is still working, but it's much slower, especially at writing. I think the 4GB one is soldered directly onto the main board, but can I replace the secondary one with something faster?
Ok, so lets assume that you can get a burst of 'entangled' photons into your eye and someone else's eye at the same time. And the point is? Last time I checked the human eye was incapable of determining anything about a photon except whether it was received or not, and the color if in sufficient quantity for a long enough period of time. Polarization? Not a chance. So how would you know its been polarized the same as a photon that someone else received?
You realize that avalanche photon detectors (APDs, which are more usually used in single-photon experiments) can't distinguish polarization either? If detecting polarization is important, you put a polarizing beam-splitter (PBS) in each arm (maybe some waveplates as well if you want a different basis from horizontal and vertical polarizations), and put an APD on each of its output ports. Given that most people have two eyes, there's no reason that a similar configuration of polarization optics can't be used.
The reason that we normally use APDs rather than human eyes as single-photon detectors is because they have lower noise, greater detection efficiency, and can work at higher repetition rates. Plus, I'd rather fry an APD if I accidentally sent too much light into it while it was switched on, than blind myself.
When writing scientific papers in LaTeX, there's nothing else that comes close to the power of AUCTeX with preview-latex http://www.gnu.org/software/auctex/preview-latex.html. It allows you to view typeset equations inline with the rest of the document, but on moving the cursor into an equation, shows the original code. After editing, one brief command, and the new equation is typeset and displayed.
Brand is definitely not important, but if you don't need the modern features or don't know what they are then why are you upgrading the scope at all? I've used scopes from all manufacturers and by far the most important consideration is what is currently being used. You don't sound like you are the one who will be using the scope so ask the guy who will.
There is nothing more frustrating than having a department full of Tektronix scopes and people who have used those for the last 3 years only to have to battle with an Agilent simply because the buttons are in a different place.
Absolutely. I spent a frightening amount of my time grad. school staring at a Tek TDS744A, and I knew my way round its interface much faster than the embedded processor could keep up with my commands. On the odd occasion that I've used a newer Tek ’scope, not only have I immediately known my way through the menus, it's also been able to keep up with me.
Agilent ’scopes have a reasonably well layed-out UI (though it's a bit of a culture shock), but LeCroy's ’scopes are just impenetrably different from Tek's.
I've been bitching about XP's contiunually rebooting until it "catches" and reaches the desktop while Mandriva boots right up with no complaints, but I finally found our why it was doing that.
I once had the opposite problem on one computer, Windows seemed to work fine, but Linux kernel panicked really often. It turned out to be dodgy memory, and I guess Windows just wasn't writing anything that important to the dodgy area. That's the only time Windows has been more stable than Linux for me!
I really don't get why Apple won't just come out with a real, honest-to-goodness two-button laptop. None of this gimmicky stuff meant to keep it looking like a one-button setup while ever-so-awkwardly implementing a secondary click feature. Lack of a real two-button touchpad is the only reason at least two of my friends haven't yet bought Mac laptops, and I can only chalk this kind of reality-defying failure to address the market to direct veto from Jobs himself.
I never even use the single button below the trackpad on a Macbook. I tap with one finger for left click, tap with two fingers for right click, and drag with two fingers for scroll. This method doesn't strike me as awkward at all (whereas holding down option while clicking the button is indeed awkward.)
There are some really neat ICs out there that allow you to build a device thats USB controlled, eg the PC can send a signal down the wire (and vice versa) and you can make the device do something.
Do you have any more information on these ICs? How difficult and expensive is it to build a simple few-channel low-voltage DC DAC/ADC device? Something where I can simply set an output to a desired voltage, and read the voltage into an input channel. I'm not talking waveforms: a response of around 1 Hz would be fine.
So it wasn't my imagination, that the crux of the passage as her panties fell to the floor, she looked up at me and said, "Hello, world" in your novel was perhaps "borrowed" from an earlier work published by Addison Wesley?
Try it. Telnet to your SMTP server and send an e-mail to yourself:
EHLO localhost
MAIL FROM: valid@email.address
RCPT TO: destination@email.address (or username on the system)
DATA
(From, To, Subject, etc would go here)
Any message
.
QUIT
I'm sure most people here know anyway, but if you want to try this you'll need to change the ELHO to HELO. Also you'll probably want to telnet using port 25.
or using a technique called 'fuzzing'. Anyone want to explain what this 'fuzzing' is?
Fuzzing is feeding a program with malformed input to see whether there are any vulnerabilities such as buffer overruns which may be exploitable. Of course, you'd know that if you'd read the article...
Yep, I have a Happy Hacking keyboard. It has 65 keys, basically all the keys I ever actually use. It's essentially the same layout as on some small laptops, but with proper full-sized keys. And since I don't have much room on my desk, it saves room for important stuff (like empty coke cans and coffee mugs).
I'm a grad student at the Oxford physics department. (Some of my colleagues had been collaborating with the Southampton fibre-optics facility.) At Oxford, there is a centralized backup server which many people use (an IBM tape-based remote, offsite backup called HFS), quoting from the website:
The HFS servers and tape library are situated in a climate-controlled, secure location. Three copies of your data are made, each to separate tapes; one copy is held in the automated tape library; the second, in a fire-proof safe located at OUCS and the third in a fire-proof safe at an offsite storage facility outside Oxford.
So pretty much nothing short of nuclear war is going to result in my data being lost.
But I have a lab full of optics equipment that's taken several people years to assemble and align. Hell, even someone going in and knocking every single component in the lab out of alignment would probably take several months to rectify.
If a substantial amount of fire damage was caused to my equipment, I'd be extremely lucky to graduate anything remotely close to on time, if at all. If there were a fire threatening the lab, and I were around, I'd prbably take a greater amount of personal risk to fight it, than I would if my flat were on fire. My personal possessions can be replaced with a little money (some stuff is even insured) and a relatively small amount of work and time, but I have over two years of my life invested in my lab set up.
Why did the testing procedure involve powering the supplies from what looks like a serious piece of kit delivering bang on 230Vac/50Hz. Surely an important consideration in choosing a power supply is how well it copes with a dirtier mains input?
funny that you mention it. I wish there would be a / find function instead of ctrl+f.
Umm, pressing / in Firefox does exactly the same as pressing Ctrl+F. It's how I bring up the find bar all the time. Or do you want regexps? That would be sweet.
Incidentally the report a broken web site wizard is great to use from the acid 2 test page.;)
Bear in mind that the Acid2 test involves invalid CSS (link to validator). It's not just a test of how a browser copes with compliant pages, but how the error handling copes as well.
You might say this in jest, but I'd be interested in hearing what ethical vegetarians think about eating cruelty-free meat.
As the artificial meat is technically an animal-derived product - you start with a real animal's muscle cell and replicate it - it would probably be ethically okay for vegetarians, but not for vegans. NB: IANAV
I call it "the mail." Each house gets a local kiosk called a "mailbox." Whenever someone needs Open Source software, a central "server" sends the software to the "mailbox" in "trucks."
Someone should totally do this.
As much as i dislike the practice it should not up to the government to decide what companies sell.
That is the decision of company.
I find it as silly as forcing restaurants to provide a vegetarian alternative (I am a vegetarian btw). If these companies can see profit in doing it they will , or they don't they will lose business , Simple as that.
No, this is more like a meat company saying that every meal you buy in a restaurant must include their meat.
And if you want to sell vegetarian meals too, then you'll have to pay a lot more for the meat.
Not only that, but they're the largest meat company in the world, and the only company that sells chicken, which is the most popular sort of meat there is.
A burglar only attacks you and your property once. A scab helps make each and every working day of your life worse than it was before.
Or, as Jack London put it:
After God had finished the rattlesnake, the toad, and the vampire, He had some awful substance left with which He made a scab. A scab is a two-legged animal with a corkscrew soul, a water-logged brain, and a combination backbone made of jelly and glue. Where others have hearts, he carries a tumor of rotten principles.
When a scab comes down the street, men turn their back and angels weep in heaven, and the devil shuts the gates of hell to keep him out. No man has a right to scab as long as there is a pool of water deep enough to drown his body in, or a rope long enough to hang his carcass with. Judas Iscariot was a gentleman compared with a scab. For betraying his Master, he had character enough to hang himself. A scab hasn't! Esau sold his birthright for a mess of pottage. Judas Iscariot sold his Savior for thirty pieces of silver. Benedict Arnold sold his country for a promise of a commission in the British Army. The modern strike-breaker sells his birthright, his country, his wife, his children, and his fellow men for an unfulfilled promise from his employer, trust or corporation.
What's Apple selling these days? Out of six things highlighted on their web page, only ONE is about hardware.
You gotta click on 'Store' before you see one single piece of hardware (aside from that iPod).
Yeah, but when you do click "Store", as in where they sell you stuff, pretty much the entire screen has hardware on it.
I don't think MS wan't to be in on the content-provision side, Apple seem to have proven that (for music at least) large profit isn't to be had.
Sure, but Apple aren't really in the content-provision business. The reason they have iTMS and iTunes is mainly to encourage people to buy iPods. Just the same as the reason they write MacOS is to sell computers.
The second is one of seven SI base units. It is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom at zero kelvins.
The definition is made in terms of the most accurate way we have of measuring it - with the atomic clock. There's a description of how they work here.
In the future the definition may change - there are developments to produce "optical clocks" which are more accurate even than atomic clocks. Read about them here or here (subscription required). Of course, any new definition will be chosen to be compatible with the previous definitions, to within the accuracy afforded by those definitions.
Slashdot Mirror
My EEE's 4GB SSD just died a couple of days ago; the 16GB secondary SSD is still working, but it's much slower, especially at writing. I think the 4GB one is soldered directly onto the main board, but can I replace the secondary one with something faster?
You realize that avalanche photon detectors (APDs, which are more usually used in single-photon experiments) can't distinguish polarization either? If detecting polarization is important, you put a polarizing beam-splitter (PBS) in each arm (maybe some waveplates as well if you want a different basis from horizontal and vertical polarizations), and put an APD on each of its output ports. Given that most people have two eyes, there's no reason that a similar configuration of polarization optics can't be used.
The reason that we normally use APDs rather than human eyes as single-photon detectors is because they have lower noise, greater detection efficiency, and can work at higher repetition rates. Plus, I'd rather fry an APD if I accidentally sent too much light into it while it was switched on, than blind myself.
Turn in your geek card!
Try this (run it a few times; the output should be different each time):
(Apologies for the rather messy use of grep and sed.)
When writing scientific papers in LaTeX, there's nothing else that comes close to the power of AUCTeX with preview-latex http://www.gnu.org/software/auctex/preview-latex.html. It allows you to view typeset equations inline with the rest of the document, but on moving the cursor into an equation, shows the original code. After editing, one brief command, and the new equation is typeset and displayed.
Absolutely. I spent a frightening amount of my time grad. school staring at a Tek TDS744A, and I knew my way round its interface much faster than the embedded processor could keep up with my commands. On the odd occasion that I've used a newer Tek ’scope, not only have I immediately known my way through the menus, it's also been able to keep up with me.
Agilent ’scopes have a reasonably well layed-out UI (though it's a bit of a culture shock), but LeCroy's ’scopes are just impenetrably different from Tek's.
I once had the opposite problem on one computer, Windows seemed to work fine, but Linux kernel panicked really often. It turned out to be dodgy memory, and I guess Windows just wasn't writing anything that important to the dodgy area. That's the only time Windows has been more stable than Linux for me!
I never even use the single button below the trackpad on a Macbook. I tap with one finger for left click, tap with two fingers for right click, and drag with two fingers for scroll. This method doesn't strike me as awkward at all (whereas holding down option while clicking the button is indeed awkward.)
Do you have any more information on these ICs? How difficult and expensive is it to build a simple few-channel low-voltage DC DAC/ADC device? Something where I can simply set an output to a desired voltage, and read the voltage into an input channel. I'm not talking waveforms: a response of around 1 Hz would be fine.
Actually, K&R was published by Prentice Hall.
It's also International No Diet Day today. Surely this is just a coincidence.
I'm sure most people here know anyway, but if you want to try this you'll need to change the ELHO to HELO. Also you'll probably want to telnet using port 25.
Fuzzing is feeding a program with malformed input to see whether there are any vulnerabilities such as buffer overruns which may be exploitable. Of course, you'd know that if you'd read the article...
Yep, I have a Happy Hacking keyboard. It has 65 keys, basically all the keys I ever actually use. It's essentially the same layout as on some small laptops, but with proper full-sized keys. And since I don't have much room on my desk, it saves room for important stuff (like empty coke cans and coffee mugs).
But I have a lab full of optics equipment that's taken several people years to assemble and align. Hell, even someone going in and knocking every single component in the lab out of alignment would probably take several months to rectify.
If a substantial amount of fire damage was caused to my equipment, I'd be extremely lucky to graduate anything remotely close to on time, if at all. If there were a fire threatening the lab, and I were around, I'd prbably take a greater amount of personal risk to fight it, than I would if my flat were on fire. My personal possessions can be replaced with a little money (some stuff is even insured) and a relatively small amount of work and time, but I have over two years of my life invested in my lab set up.
Why did the testing procedure involve powering the supplies from what looks like a serious piece of kit delivering bang on 230Vac/50Hz. Surely an important consideration in choosing a power supply is how well it copes with a dirtier mains input?
All your base are belong to us?
And if you want to sell vegetarian meals too, then you'll have to pay a lot more for the meat.
Not only that, but they're the largest meat company in the world, and the only company that sells chicken, which is the most popular sort of meat there is.
Or, as Jack London put it:
Sure, but Apple aren't really in the content-provision business. The reason they have iTMS and iTunes is mainly to encourage people to buy iPods. Just the same as the reason they write MacOS is to sell computers.
The definition is made in terms of the most accurate way we have of measuring it - with the atomic clock. There's a description of how they work here.
In the future the definition may change - there are developments to produce "optical clocks" which are more accurate even than atomic clocks. Read about them here or here (subscription required). Of course, any new definition will be chosen to be compatible with the previous definitions, to within the accuracy afforded by those definitions.