CSC-SY - علوم

NASA Tests First Deep-Space Internet

BEN ADAM — Thu, 20 Nov 2008 05:42:16 -0500

Japanese Scientists Plan to Build Space Elevator

L4W4ND — Tue, 23 Sep 2008 17:52:09 -0400

Japanese scientists are so hyped up on the possibilities of building a real life space elevator that in just two months' time the country is playing host to a conference designed to set a production timetable.
Carbon nanotube technology has advanced so rapidly that a material capable of withstanding the amazing forces in the space elevator cable is almost within reach: according to the chairman of the Japan Space Elevator Association it'd only need to be four times stronger than the current strongest nanotube rope.

The potential benefits of accessing space by crawling up a cable versus launching rockets are mind boggling...especially when you realize it could be 100 times cheaper to get there than using a Space Shuttle. But building a more than 36,000km-long carbon rope (or more likely a series of parallel ropes) to connect an Earth-based "launch pad" with a geostationary-orbiting elevator hub still seems a lot like science fiction. Yet it turns out that development of carbon nanotube technology has seen a more than 100 times increase in the fiber strength in the last five years: four times more strength certainly seems possible.

قراءة المزيد

جهاز كمبيوتر لكل طالب و كل معلم (بس مو عنا)

bayrn — Wed, 10 Sep 2008 07:20:37 -0400

الحلم عندهم ( USA ) تحقق بأن يكون لكل طالب و معلم جهاز كمبيوتر بحيث تصبح هملية التعلم أكثر متعةو تشويقا بالاضافة الى رفع مستوى التعليم

بادرت أكبر شكرة في العالم لصناعة المعالجات INTEL الى صناعة كمبيوتر خاص للطلبة و المعلمين و بسعر منخفض جدا و أسمته Classmate PC

ولهذا الجهاز ميزات تفوق سعره فهومصنوع من مواد شديدة التحمل و بألوان جميلة و حجم يماثل حجم كتاب كبير ، و لذلك هو سهل الحمل و التشغيل

قراءة المزيد

MIT Develops Realistic 6-D Imaging System

BlackSigma — Wed, 13 Aug 2008 15:30:34 -0400

The images, which have a full 3-D appearance, also react to their surrounding environments and can produce shadows and highlights.

First there was 3-D, and now there is 6-D, or at least there's 6-D in a laboratory at MIT.

MIT associate professor Ramesh Raskar is explaining his work with 6-D images at this week's SIGGRAPH meeting in a presentation titled "Towards Passive 6-D Reflectance Field Displays."

The images, which have a full 3-D appearance, also react to their surrounding environments and can produce shadows and highlights, creating an imaging phenomenon he calls "6-D."

"The [image] prototypes physically implement a reflectance field and generate different light fields depending on the incident illumination, for example, light falling through a window," Raskar states in his presentation. "We discretize the incident light field using an optical system and modulate it with a 2-D pattern, creating a flat display. It is free from electronic components."

قراءة المزيد

IBM Research Develops Technology to Aid Human Memory

BEN ADAM — Sat, 02 Aug 2008 01:21:57 -0400

Lately,IBM has unveiled a software technology created in its Research Labs that uses the images, sounds, and text recorded on everyday mobile devices to help people recall names, faces, conversations and other important information.

Nasa opens up space image library

BEN ADAM — Sat, 26 Jul 2008 14:18:49 -0400

Historic photographs, film and video available to the public.

Nasa is to make its huge collection of historic photographs, film and video available to the public for the first time.

A partnership with the non-profit Internet Archive will see 21 major Nasa imagery collections merged into a single searchable online resource. The Nasa Images website is expected to go live this week.

More !

كسوف جزئي للشمس في دول الخليج أول أغسطس.. ورمضان أول سبتمبر

BEN ADAM — Mon, 21 Jul 2008 09:44:22 -0400

أعلن نائب رئيس الجمعية الفلكية البحرينية الدكتور وهيب الناصر ان مملكة البحرين وباقى دول الخليج العربى ستشهد كسوفا جزئيا فى الاول من اغسطس المقبل.

وأوضح الدكتور الناصر فى تصريح بثته وكالة انباء البحرين اليوم ان هذا الكسوف يمثل مشاهدة ولادة هلال شعبان وذلك فى الاول من اغسطس مما يعنى أن الاول من شعبان يصادف السبت الثاني من أغسطس وفق التقويم الاسلامى الموحد و ان الاول من رمضان المبارك هو الاثنين الاول من سبتمبر وعيد الفطر هو الاربعاء الاول من اكتوبر.

قراءة المزيد

Wikipedia hosts human gene repository

BEN ADAM — Thu, 10 Jul 2008 10:36:05 -0400

U.S. scientists are developing a “Gene Wiki” with the aim of fostering a flexible, organic archive of human genetic information.

The project exists within Wikipedia, and is expected to speed up the process of deciphering genome sequences.

According to Andrew Su, whose report of the project appears this week in the scientific journal PLoS Biology, the researchers were emboldened to develop the Wiki by Wikipedia’s “Be Bold” ethos.

قراءة المزيد

Big atom-smasher may start up in August

Renwar — Sun, 29 Jun 2008 01:12:17 -0400

MEYRIN, Switzerland - MEYRIN, Switzerland - The most powerful atom-smasher ever built could make some bizarre discoveries, such as invisible matter or extra dimensions in space, after it is switched on in August.

But some critics fear that the Large Hadron Collider could exceed physicists' wildest conjectures: Will it spawn a black hole that could swallow Earth? Or spit out particles that could turn the planet into a hot dead clump?

Ridiculous, say scientists at the European Organization for Nuclear Research, known by its French initials CERN -- some of whom have been working for a generation on the $5.8 billion collider, or LHC.

قراءة المزيد

Japan robot scales Grand Canyon

BEN ADAM — Mon, 02 Jun 2008 07:34:51 -0400

June 2 - It may be a Great Wonder of the World, but the Grand Canyon could not stop a determined 17-cm robot and a pair of AA batteries.

After a few returns to base camp, a carbon-plastic robot powered by Panasonic's Evolta batteries made the 530-m rope climb in under seven hours.

Dan Sloan reports.

Watch the video on Reuters.