Virtual particle always recombine, by their definition. Photon flies, virtually becomes electron-positron pair, but after a short
period of time becomes photon again, etc. It's virtual because it's unobservable but strictly follows from the physical interpretation of the time-evolution of the quantum field.
If you ask whether it is possible that photon flies, then somehow by itself or in interaction with something else just turns into electron and positron which then never reassemble again into a photon, well, that's possible too and it is simply called decay, and happens with some probability whenever energy of photon is larger than the energy necessary to create electron positron pair.
Furthermore, time-reversibility of these processes is also assumed in the formalism, it is essentially postulated from the beginning, so there is no production or loss of "entropy" in such elementary processes.
Maybe you were unintentionally alluding to something similar to the black hole radiation? What these guys calculated was for strict tunneling, where you get the probability of a process by which particle turns into a virtual pair and then pair goes through the wall and recombines into the particle again. The process as a whole is taken into account, not "by parts".
There's enough information to build detectors that can discriminate the rate of tunneling (if any, of course) between this virtual particle mode, the conversion mode, and "classical" (uncertainty) tunneling.
They are both "uncertainty" tunnelings, the standard one being classical and the proposed one would be relativistic.
Huh? All I'm saying is that authors would type stuff using cheap and available typewriters. Typewriters, however, were not suitable for professional publishing, so an entire industry sprung up around turning amateurish looking type fonts into professional looking (and easier to read) published products.
But does not this also restate what I said before, that writers were making their works using significantly different typesetting than what came out as the final product at the consumer market?
As a user who upgraded to Fedora 7 from Fedora Core 6 after the Liberation fonts switchover, I can say that the impact must be experienced to be believed.
I dunno. It looks fine, but the dot in the middle of zero is just sooo like last century that it is becoming annoying. I really like Inconsolata, although it could be rendered a bit better.
Books and articles may have been written on a typewriter, but very few were ever PUBLISHED using the typewritten original.
[italics added]
Truer words have never been spoken. But then you write: typewritten original. Original! As though there is more veracity, closer proximity to the author and the work, in the typewriter-written text than in a nicely typeset copy of the same text.
Word shape is important. Take mono-spaced fonts for example. They may work well in writing lines of code or in spreadsheet columns (where it is helpful for the letters to line up), but in English prose, they are tiresome to read, because they completely eliminate the shape of words that we are used to reading. Again, change your paper to Courier, then try to read it. Tiresome.
Yet, before, typewriters were used en masse for production of prose, poetry and pretty much anything else.
It could be implemented as a permanent virtual address space in which the programmer treats everything like a memory-resident object and the pages of memory regularly get written to disk or read from it if needed. It seems to have worked for OS/400 (now IBM i) for over two decades.
Isn't this called swap or page file nowadays? Also, there is mmap to map any file into virtual address space just like in your description.
Thanks for the post, I've almost clicked the link in parent's post to see what he's talking about. I'd say then that the civilization as we know it has a chance of survival.
As for why they had to code an actual application? It's so it can run in the background. Otherwise you'd need to open your browser every day to check for updates.
As they say, you have a firm grasp of the obvious.
The fix is already included in the accepted updates:[...]
Just run apt-get update && apt-get install acpi-support.
Before the update don't forget to check whether you have the bug:
This problem has been confirmed in Ubuntu as well as in other distributions and on MacOS X and Windows.
Symptoms of this bug are:
* Frequent HD clicks -- more than one per 3 minutes while idle, louder than the typical access sounds. Often more than twice per minute. On some disks, the click is very quiet
* Rapidly Increasing Load_Cycle_Count as displayed in the final number in sudo smartctl -a/dev/hda | grep Load_Cycle_Count (where/dev/hda is replaced with your own hard disk device)
[...]
Reasonable Limits / Criteria for a fix:
* There should be fewer than ~15 load cycles per hour, except during heavy usage while on battery.
* This provides a life expectancy of over four years, which is reasonable for a hard disk.
Let's face it: for you the summary should have been: "The class is taught by a superficial model, who will fall in love with the nerdiest student at the end of the semester after realizing that she is beautiful on the inside."
So far, I've tested the following apps to work perfectly in Windows 7:
- Mozilla Firefox 3.0 (with AdBlock, Flash, and Acrobat Reader)
- Acrobat Reader 9
- GIMP 2.6
- OpenOffice 3
- iTunes (Vista x64)
[italics added]
I can't emphasize enough how interesting all of this is---achieving such a wide range of software to work, and perfectly at that, is no small feat for any OS vendor, let alone MS.
I'm seriously considering now switching my notebook from 64bit ubuntu 8.10 to windows 7 beta.
Slashdot Mirror
5 *million* lines of Mathematica? How many code monkeys does he have working for him?
I don't know, but many NewbieProgrammerMen.
Virtual particle always recombine, by their definition. Photon flies, virtually becomes electron-positron pair, but after a short period of time becomes photon again, etc. It's virtual because it's unobservable but strictly follows from the physical interpretation of the time-evolution of the quantum field.
If you ask whether it is possible that photon flies, then somehow by itself or in interaction with something else just turns into electron and positron which then never reassemble again into a photon, well, that's possible too and it is simply called decay, and happens with some probability whenever energy of photon is larger than the energy necessary to create electron positron pair.
Furthermore, time-reversibility of these processes is also assumed in the formalism, it is essentially postulated from the beginning, so there is no production or loss of "entropy" in such elementary processes.
Maybe you were unintentionally alluding to something similar to the black hole radiation? What these guys calculated was for strict tunneling, where you get the probability of a process by which particle turns into a virtual pair and then pair goes through the wall and recombines into the particle again. The process as a whole is taken into account, not "by parts".
There's enough information to build detectors that can discriminate the rate of tunneling (if any, of course) between this virtual particle mode, the conversion mode, and "classical" (uncertainty) tunneling.
They are both "uncertainty" tunnelings, the standard one being classical and the proposed one would be relativistic.
God got tired of Satan bragging about his "all naturally-environmentally-powered controlled climate system" so he upped the ante a bit.
Add another 6 mil to the project and that would be 666 million dollars.
Huh? All I'm saying is that authors would type stuff using cheap and available typewriters. Typewriters, however, were not suitable for professional publishing, so an entire industry sprung up around turning amateurish looking type fonts into professional looking (and easier to read) published products.
But does not this also restate what I said before, that writers were making their works using significantly different typesetting than what came out as the final product at the consumer market?
Do you then claim that font rendering technologies that make something easier to read have nothing to do with writing?
Take a quiz, find who you are.
Mailbox. Open mailbox.
It's not the same, it's been set differently.
Let's take for example Hamlet as published by two publishers: we get two different books and the play is still set exactly the same.
I love pointless pedantry as much as anyone, but this whole "a minus is not a hyphen" thing is purely an exercise in masturbation.
So you don't like masturbation?
Well, sucky thing about LyX is that it supports only emacs key-bindings, so I do my LaTex in vi.
As a user who upgraded to Fedora 7 from Fedora Core 6 after the Liberation fonts switchover, I can say that the impact must be experienced to be believed.
I dunno. It looks fine, but the dot in the middle of zero is just sooo like last century that it is becoming annoying. I really like Inconsolata, although it could be rendered a bit better.
Books and articles may have been written on a typewriter, but very few were ever PUBLISHED using the typewritten original.
[italics added]
Truer words have never been spoken. But then you write: typewritten original. Original! As though there is more veracity, closer proximity to the author and the work, in the typewriter-written text than in a nicely typeset copy of the same text.
Printed works were professional typeset, even before desktop publishing.
I'd say at least since Gutenberg.
Very few books were typed on a typewriter, because, alas, mono-spaced fonts are hard to read.
Then you surely wouldn't believe if I told you how many books, articles and whatnot have been written using a typewriter.
I remember painstakingly cutting out letters and laying them out on the light board to avoid the problem of typewriter monospacing.
And I sometimes switch to monospaced type when writing just to dip my eyes into that vast reservoir of visual unconscious of the Western world.
Word shape is important. Take mono-spaced fonts for example. They may work well in writing lines of code or in spreadsheet columns (where it is helpful for the letters to line up), but in English prose, they are tiresome to read, because they completely eliminate the shape of words that we are used to reading. Again, change your paper to Courier, then try to read it. Tiresome.
Yet, before, typewriters were used en masse for production of prose, poetry and pretty much anything else.
If a letter is never written, does it exist?
It doesn't.
It could be implemented as a permanent virtual address space in which the programmer treats everything like a memory-resident object and the pages of memory regularly get written to disk or read from it if needed. It seems to have worked for OS/400 (now IBM i) for over two decades.
Isn't this called swap or page file nowadays? Also, there is mmap to map any file into virtual address space just like in your description.
Thanks for the post, I've almost clicked the link in parent's post to see what he's talking about. I'd say then that the civilization as we know it has a chance of survival.
As for why they had to code an actual application? It's so it can run in the background. Otherwise you'd need to open your browser every day to check for updates.
As they say, you have a firm grasp of the obvious.
The fix is already included in the accepted updates:[...]
Just run apt-get update && apt-get install acpi-support.
Before the update don't forget to check whether you have the bug:
This problem has been confirmed in Ubuntu as well as in other distributions and on MacOS X and Windows.
Symptoms of this bug are: /dev/hda | grep Load_Cycle_Count /dev/hda is replaced with your own hard disk device)
* Frequent HD clicks -- more than one per 3 minutes while idle, louder than the typical access sounds. Often more than twice per minute. On some disks, the click is very quiet
* Rapidly Increasing Load_Cycle_Count as displayed in the final number in
sudo smartctl -a
(where
[...]
Reasonable Limits / Criteria for a fix:
* There should be fewer than ~15 load cycles per hour, except during heavy usage while on battery.
* This provides a life expectancy of over four years, which is reasonable for a hard disk.
link
smartctl is in the smarttools package.
Let's face it: for you the summary should have been: "The class is taught by a superficial model, who will fall in love with the nerdiest student at the end of the semester after realizing that she is beautiful on the inside."
Why Git Is Better Than X.com/ YouTube - Tech Talk: Linus Torvalds on git (yeah, I'm a convert)
One thing that Linus left uncovered is whether git does cover-sheets for TPS reports.
So far, I've tested the following apps to work perfectly in Windows 7:
- Mozilla Firefox 3.0 (with AdBlock, Flash, and Acrobat Reader)
- Acrobat Reader 9
- GIMP 2.6
- OpenOffice 3
- iTunes (Vista x64)
[italics added]
I can't emphasize enough how interesting all of this is---achieving such a wide range of software to work, and perfectly at that, is no small feat for any OS vendor, let alone MS.
I'm seriously considering now switching my notebook from 64bit ubuntu 8.10 to windows 7 beta.
Hey, that's LISP. Oh, wait. I mean that's Zen!
For those who doubt that LISP is Zen, I ask the following: What is the sound of one ) closing?
It is the sound of one ( openning being closed.