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Teens capture images of space with £56 camera and balloon

Direct Posted by Direct at 11:03 PM on March 17, 2009 Comments comments (0)

Teenagers armed with only a £56 camera and latex balloon have managed to take stunning pictures of space from 20-miles above Earth.


A picture of the stratosphere taken by a group of four Spanish schoolboys Photo: METEOTEK IES LA BISBAL SCHOOL/BARCROFT MEDIA

Proving that you don't need Google's billions or the BBC weather centre's resources, the four Spanish students managed to send a camera-operated weather balloon into the stratosphere.

Taking atmospheric readings and photographs 20 miles above the ground, the Meteotek team of IES La Bisbal school in Catalonia completed their incredible experiment at the end of February this year.

Building the electronic sensor components from scratch, Gerard Marull Paretas, Sergi Saballs Vila, Marta­ Gasull Morcillo and Jaume Puigmiquel Casamort managed to send their heavy duty £43 latex balloon to the edge of space and take readings of its ascent.

Created by the four students under the guidance of teacher Jordi Fanals Oriol, the budding scientists, all aged 18-19, followed the progress of their balloon using high tech sensors communicating with Google Earth.

Team leader Gerard Marull, 18, said: "We were overwhelmed at our results, especially the photographs, to send our handmade craft to the edge of space is incredible."

Completing their landmark experiment on February, the Meteotek team had to account for a wide variety of variables and rely on a lot of luck.

"The balloon we chose was inflated with helium to just over two metres and weighed just 1500 grams," said Gerard. "It was able to carry the sensor equipment and digital Nikon camera which weighed 1.5kg.

"However, when we launched at 9.10am on that morning the critical point for the experiment was to see if the balloon would make it past 10,000m, or 30,000ft, which is the altitude that commercial airliners fly at."

Due to the changing atmospheric pressures, the helium weather balloon carrying the meteorological equipment was expected to inflate to a maximum of nine and a half metres as it travelled upwards at 270 metres-per-minute.

"We took readings as the balloon rose and mapped its progress using Google Earth and the onboard radio receiver," said Gerard.

"At over 100,000ft the balloon lost its inflation and the equipment was returned to the earth.

"We travelled 10km to find the sensors and photographic card, which was still emitting its signal, even though it had been exposed to the most extreme conditions."

The pupils' incredible school science project has already caught the attention of the University of Wyoming in the US, and the Meteotek team keep those interested updated with regular blogs and updates to their Twitter feed.

La nouvelle kairouan !!

Direct Posted by Direct at 08:00 PM on March 12, 2009 Comments comments (1)
الجميع لاحظ من دون أدني شك النسق المتلاحق من مشاريع و إنجازات ضخمة و من برامج إضافية نعتز بها من بينها

1- المصنع الألماني للأحذية الكلفة 98 مليون دينار مواطن الشغل 4200
2- أشغال إتمام تهيئة و تعبيد طريق حفوز و تجديد شبكة تصريف الأمطار به الكلفة 7 ملايين دينار
3- أشغال تهيئة باب الجلادين و شارع الثقافة الكلفة 550 ألف دينار
4- إشغال تجديد معدات و تجهيزات المركب الثقافي أسد ابن الفرات الكلفة 1 مليون دينار
5- إشغال بناء مدرسة نموذجية بالطريق الحزامية الكلفة 2,5 مليون دينار
6- إشغال بناء المصنع الكوري للأسلاك و الكوابل الكلفة 3,5 مليون دينار مواطن الشغل 1400
7- إشغال بناء مصنع للخزف الكلفة 250 مليون دينار مواطن الشغل 300
8- إشغال بناء مصنع للأسمنت بالرويسات الكلفة 406 مليون دينار مواطن الشغل 300
9- إشغال بناء طريق القيروان أولاد الشامخ الكلفة 14 مليون دينار
10- أشغال تعبيد طريق الوسلاتية الكلفة 11 مليون دينار
11- أشغال إتمام القسط الثاني من ساحة أولاد فرحان الكلفة 350 ألف دينار
12- إتمام و تهيئة حي الجنان المحاذي لمقام للإمام سحنون الكلفة 6 مليون دينار
13- إنجاز محطة تطهير جديدة بالقيروان الكلفة 17 مليون دينار
14- إنجاز المصب المراقب بمنطقة الباطن الكلفة 4,4 مليون دينار
Cet article est copier de forum officiel du Kairouan.

SANS Institute liste les 25 erreurs de programmation les plus dangereuses

Direct Posted by Direct at 07:52 PM on March 12, 2009 Comments comments (0)

Le SANS Institute américain, qui propose études et formations sur les questions de sécurité, a publié récemment une liste de 25 erreurs fréquentes de programmation, sources involontaires de vulnérabilités dans des logiciels, et susceptibles d'être exploitées à des fins malveillantes ou d'espionnage.

Mozilla lance Bespin, un éditeur de code en ligne

Direct Posted by Direct at 07:49 PM on March 12, 2009 Comments comments (0)

Le dernier projet des Mozilla Labs est un éditeur de code en ligne pour les développeurs, baptisé « Bespin ».Il permet de composer et de tester du code pour des sites web et des applications, directement à partir d'un navigateur web.

iPhone: devenez développeur d'applications en 10 étapes

Direct Posted by Direct at 07:47 PM on March 12, 2009 Comments comments (0)

Si l'iPhone constitue la poule aux oeufs d'or d'Apple, des milliers de développeurs se pressent pour programmer sur ce populaire mobile. Est-ce facile ? Quelles sont les trucs pour y parvenir ? En quelques règles d'or, nous vous indiquons comme devenir un talentueux développeur iPhone.


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