Yesterday my mobile dies. Dies suddenly and fast. The mobile agonizes during hours until I decide to go to a mobile-shop to acquire the substitute... Just like an hour after this action, a friend announced me the Neo FreeRunner release.
Rage...
2008/06/27
2008/06/23
Binary pulsar system
Our telescopes saw many dual star systems, here two star are orbiting between then their mass center. This two starts also rotates faster when the distance between is smaller, and this is one way to try to detect the gravitational waves specially if this pair is massive.
Also the sky have objects called pulsars, neutrons start that rotates fast and emits x-ray from the magnetic poles and can be thought to be like the lighthouses used to guide the pilots in the sea (close to the coast).
The Esa has a satellite to observe the x-ray sources called XMM-Newton. Last October this satellite saw something really interesting: a binary pulsar system. Interesting specially because the close impact effects of the emissions of each pulsar to the magnetosfere of the other. Have a nice read.
Also the sky have objects called pulsars, neutrons start that rotates fast and emits x-ray from the magnetic poles and can be thought to be like the lighthouses used to guide the pilots in the sea (close to the coast).
The Esa has a satellite to observe the x-ray sources called XMM-Newton. Last October this satellite saw something really interesting: a binary pulsar system. Interesting specially because the close impact effects of the emissions of each pulsar to the magnetosfere of the other. Have a nice read.
2008/06/21
Repository mirroring
This post title contain the necessary words to find a solution to the problem that I post at the beginning of this month. After some try touching what was not think to be touch (the files in the .svn directory of a checkout) I decide to send an email to the users list.
Why I didn't send it before? Easily I receive a feedback indicating me that I am trespassing the limits of the things that the users should be allow to do. Then I explain not only the intentions, and more the reasons why I want this feature. And a fast answer appears!
Yes, a tool to help what I want exist, and its name is svk! I'll use it and reflect the impression. Really thanks to Ryan Schmidt.
Why I didn't send it before? Easily I receive a feedback indicating me that I am trespassing the limits of the things that the users should be allow to do. Then I explain not only the intentions, and more the reasons why I want this feature. And a fast answer appears!
Yes, a tool to help what I want exist, and its name is svk! I'll use it and reflect the impression. Really thanks to Ryan Schmidt.
Just on time
I read the recently published Firefox 3 also receive a vulnerability announce just 5 hours after the launch.
I don't understand the reasons of the Zero Day Initiative to publish it so early to the launch, and then say they only inform the Mozilla foundation for security. I my opinion, the ZDI organization probably know the bug before the launch (then the beta versions are also vulnerable) and the test if the Firefox developers fix it before the launch.
They like to be publicised because they take care on security, but I think they did in the other way. If they know the problem under the beta version and don't say anything they had the tools to avoid this announce. Only 5 hours separate this people from deserving a good job recognition, or to say 'please, you already had the opportunity to said before'.
Actualization: Interesting discussion found. It seem like the 2 version of Firefox is also vulnerable. This does mean they know before, but increase the doubt.
I don't understand the reasons of the Zero Day Initiative to publish it so early to the launch, and then say they only inform the Mozilla foundation for security. I my opinion, the ZDI organization probably know the bug before the launch (then the beta versions are also vulnerable) and the test if the Firefox developers fix it before the launch.
They like to be publicised because they take care on security, but I think they did in the other way. If they know the problem under the beta version and don't say anything they had the tools to avoid this announce. Only 5 hours separate this people from deserving a good job recognition, or to say 'please, you already had the opportunity to said before'.
Actualization: Interesting discussion found. It seem like the 2 version of Firefox is also vulnerable. This does mean they know before, but increase the doubt.
Have you ever seen a virus?
I have in the aggregator a reference to the 'physics tao' that many time has interesting posts. Today we have available one about X-rays and virus. The resolution to see this really incredible little things is incredible. It seems to need really brilliant and coherent light, but a read of the referred article is mandatory.
Starting for the abstract, the words X-ray diffraction, increase my interest. Lest to read the complete article! Yes, it talks about Synchrotrons, about brilliant sources, cites the X-FEL, and the experiment was carried in Spring-8 (the highest electron energy synchrotron and the most brilliant x-ray source).
Did you ever meet a virus? It a really small organism and because of it length the light necessary to distinguish its parts has to be really energetic to see the structure a small distance detail.
In the article also has mention the effect of the radiation dose to the sample. Yes, the live structures doesn't like the radiation, but you need this light to see it. It seems a contradiction, but the way to do it is to reduce the exposition time that the sample has. A fast shutter is important, and now I understand better why I need to work for a ~1ms fast shutter for the NCD beamline. Reduce the exposition time of the sample to the x-rays to the exact time that the SAXS detector is available.
Uau! Here they talk about the improvement that can be the xfel use and a ultrafast pulses of <= 25 femtoseconds. This can allow more energetic dose during less time, but probably this relation is not linear. I say, more energy means much less time.
Starting for the abstract, the words X-ray diffraction, increase my interest. Lest to read the complete article! Yes, it talks about Synchrotrons, about brilliant sources, cites the X-FEL, and the experiment was carried in Spring-8 (the highest electron energy synchrotron and the most brilliant x-ray source).
Did you ever meet a virus? It a really small organism and because of it length the light necessary to distinguish its parts has to be really energetic to see the structure a small distance detail.In the article also has mention the effect of the radiation dose to the sample. Yes, the live structures doesn't like the radiation, but you need this light to see it. It seems a contradiction, but the way to do it is to reduce the exposition time that the sample has. A fast shutter is important, and now I understand better why I need to work for a ~1ms fast shutter for the NCD beamline. Reduce the exposition time of the sample to the x-rays to the exact time that the SAXS detector is available.
Uau! Here they talk about the improvement that can be the xfel use and a ultrafast pulses of <= 25 femtoseconds. This can allow more energetic dose during less time, but probably this relation is not linear. I say, more energy means much less time.
2008/06/13
How can be a sun aurora?
Reading this post about the end of the Ulyses program and also watching the fantastic good bye video I have a question for the air. I saw boreal auroras and its really fantastic, and difficult to photograph (also because it moves).
Our Sun has also a magnetic field called the heliosphere who protects the elements in the Solar Sistem from the interstellar medium. Also, as the video shows some particles can decay down to the Sun poles, as the solar wind does with us, and it may produce a similar show.
Our Sun has also a magnetic field called the heliosphere who protects the elements in the Solar Sistem from the interstellar medium. Also, as the video shows some particles can decay down to the Sun poles, as the solar wind does with us, and it may produce a similar show.
2008/06/11
TauPanel
In Alba, we are developing PyQt4 widgets for Tango, as you can read in many posts. Now is the torn of a generic widget for devices to show all the attributes:
This is a little early, and it's on the development beginning. It didn't have the features that the AtkPanel has. But time to time, it will. Right now it has support to read and write Tango attributes and to know the device status.
Future plans include, for sure, support for Tango commands, device and attribute properties, change the device during running time, and what else we think can be necessary...
I feel happy...
This is a little early, and it's on the development beginning. It didn't have the features that the AtkPanel has. But time to time, it will. Right now it has support to read and write Tango attributes and to know the device status.
Future plans include, for sure, support for Tango commands, device and attribute properties, change the device during running time, and what else we think can be necessary...
I feel happy...
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