Does someone know if you can use DarwinPorts with Tiger? They still list 10.2/10.3 as system requirements and I was not able to find any relevant Tiger information on their site.
I cannot understand how parent post got moderated to +4 Informative when the story is about OpenOffice.org for Mac.
[OT]
Also, I really do not know why people seem to hate Quebec that much... also, you need to remember that just before the last referendum in Quebec (1995) people from all over Canada came to Montreal saying "Quebec, we love you". The truth is that I think Canada needs Quebec, and I'm not only saying this because if Quebec had left Canada there would be a big gap between Ontario and New-Brunswick.
The presence of Quebec in Canada is about the only thing that allows canadian identity to be different from the american one. A simple example of this (I could give more) would be that Quebecers where the most opposed to the invasion of Irak by American forces, and the decision that Canada would not join them was taken by a Quebecer, Canada's prime minister Jean Chretien...
As a matter of fact, I would really appreciate knowing why people dislike Quebec.. [/OT]
If they had started in 1993, they would have had a chance. In 2003, it's way too late.
I'm from Quebec, and I primary talks french. Since I won't ever say "courriel" instead of email in spoken language, you can be sure that when I have to write something more important (like my c.v., or just a letter to my boss!), I will be using 'courriel'. As a matter of fact, most people are already using 'courriel' when writing formal papers.
So, in a way you are right since I am pretty sure that the word usage will stay lower than 'email' in everyday language. However, even as of today (in Quebec, at least) seeing the word 'email' on a official note seems very weird.
Ok well I misunderstood your introducing line. Sorry 'bout that!
Anyway, my point was more that even tough the technological challenge to build this missile is a great one, I cannot understand why someone would want to start such a project, since there are so much more things that could be done that could really be more useful, or at least less *harmfull* from a social point of view.
The real question is not 'how do we prevent terrorist from using this king of stuff' , since if joe-nobody can build a cruise missile in his backyard, you can be sure that terrorist organisations could have built it years ago. However, they do not need to buy their own missile. They have enough money to buy *quality* missiles from kind multinational corporations when they want to.
The question this article raises is why would somebody who is not totally out of his mind would want to build a cruise missile. I don't think the *geek* factor alone would be a correct answer. A cruise missile... as if the world needed more of those. I cannot believe the man could not find anything more useful to build.
I don't think "tracking the motions of electrons around the nucleus" is what they are trying to do. Most of the time, ultrafast spectroscopy (as in femtosecond spectroscopy) is done in a "pump-probe" setup. First you pump the sample with a femtosecond pulse, then you probe it with another femtosecond pulse, delayed in time. You just have to look at the way the probe is transmitted in function of delay time to see the living times of excited states..
I think this may be more like what they want to do.. study the nucleus dynamics, or as they say in the text, their formation or fission,..
I do think that you were right on one point however, when you told that they did not adress the Uncertainty Principle. What puzzles me is how do they think they are going to use zeptosecond pulses. Pulses this short must have a very large bandwith (for comparison, 5fs pulses need to have about 300nm bandwith). Dispersion will be a huge problem if they ever want to steer the beam, or even focus it.
I went to a conference on pulsed lasers about two weeks ago (I'm a physics student working with femtosecond lasers) and I can tell you that the shortest pulse widths ever achieved are of 4-5 femtoseconds.. no one ever got a width 10^-15s because of frequency dispersion in dispersive materials (prisms, lens..)
However, you have a good point saying they could have use an autocorrelator for mesuring the frequency of the transistors..
Slashdot Mirror
Does someone know if you can use DarwinPorts with Tiger? They still list 10.2/10.3 as system requirements and I was not able to find any relevant Tiger information on their site.
I cannot understand how parent post got moderated to +4 Informative when the story is about OpenOffice.org for Mac.
[OT]
Also, I really do not know why people seem to hate Quebec that much... also, you need to remember that just before the last referendum in Quebec (1995) people from all over Canada came to Montreal saying "Quebec, we love you". The truth is that I think Canada needs Quebec, and I'm not only saying this because if Quebec had left Canada there would be a big gap between Ontario and New-Brunswick.
The presence of Quebec in Canada is about the only thing that allows canadian identity to be different from the american one. A simple example of this (I could give more) would be that Quebecers where the most opposed to the invasion of Irak by American forces, and the decision that Canada would not join them was taken by a Quebecer, Canada's prime minister Jean Chretien...
As a matter of fact, I would really appreciate knowing why people dislike Quebec.. [/OT]
Ok well I misunderstood your introducing line.
Sorry 'bout that!
Anyway, my point was more that even tough the technological challenge to build this missile is a great one, I cannot understand why someone would want to start such a project, since there are so much more things that could be done that could really be more useful, or at least less *harmfull* from a social point of view.
The real question is not 'how do we prevent terrorist from using this king of stuff' , since if joe-nobody can build a cruise missile in his backyard, you can be sure that terrorist organisations could have built it years ago. However, they do not need to buy their own missile. They have enough money to buy *quality* missiles from kind multinational corporations when they want to.
The question this article raises is why would somebody who is not totally out of his mind would want to build a cruise missile. I don't think the *geek* factor alone would be a correct answer. A cruise missile... as if the world needed more of those. I cannot believe the man could not find anything more useful to build.
I'm also a physics student.
..
I don't think "tracking the motions of electrons around the nucleus" is what they are trying to do. Most of the time, ultrafast spectroscopy (as in femtosecond spectroscopy) is done in a "pump-probe" setup. First you pump the sample with a femtosecond pulse, then you probe it with another femtosecond pulse, delayed in time. You just have to look at the way the probe is transmitted in function of delay time to see the living times of excited states..
I think this may be more like what they want to do.. study the nucleus dynamics, or as they say in the text, their formation or fission,
I do think that you were right on one point however, when you told that they did not adress the Uncertainty Principle. What puzzles me is how do they think they are going to use zeptosecond pulses. Pulses this short must have a very large bandwith (for comparison, 5fs pulses need to have about 300nm bandwith). Dispersion will be a huge problem if they ever want to steer the beam, or even focus it.
taxelxii
I went to a conference on pulsed lasers about two weeks ago (I'm a physics student working with femtosecond lasers) and I can tell you that the shortest pulse widths ever achieved are of 4-5 femtoseconds.. no one ever got a width 10^-15s because of frequency dispersion in dispersive materials (prisms, lens..) However, you have a good point saying they could have use an autocorrelator for mesuring the frequency of the transistors..