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Wednesday, November 21, 2012
Sunday, June 3, 2012
مبارك حصولك على درجة الاختصاص العالي في الطب
مبارك تخرجك يا احلى واغلى دكتورة
كلنا فخر واعتزاز بك بابا
Tuesday, March 6, 2012
Saturday, February 25, 2012
Japan plans snail-paced space elevator for 2050
Japanese construction company Obayashi wants to build an elevator to space and transport passengers to a station about a tenth the distance to the moon. The elevator would use super-strong carbon nanotubes in its cables and could be ready as early as 2050, according to Tokyo-based Obayashi.
The cables would stretch some 60,000 miles, about a quarter the distance to the moon, and would be attached to Earth at a spaceport anchored to the ocean floor. The other end would dangle a counterweight in space. The elevator would zip along at 125 mph, possibly powered by magnetic linear motors, but would take about a week to get to the station. It would carry up to 30 people
Thursday, February 16, 2012
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