Browsing the blog archivesfor the day Friday, November 21st, 2008.


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  • Snapshot of the International Space Station

     
    On March 13, 2008, the International Space Station passed across the field-of-view of Germany's remote sensing satellite, TerraSAR-X, at a distance of 195 kilometers, or 122 miles, and at a relative speed of 34,540 kilometers per hour, or more than 22,000 mph. In contrast to optical cameras, radar does not 'see' surfaces. Instead, it is much more aware of the edges and corners which bounce back the microwave signal it transmits. Smooth surfaces such as those on the station's solar generators or the radiator panels used to dissipate excess heat, unless directly facing the radar antenna, tend to deflect rather than reflect the radar beam, causing these features to appear on the radar image as dark areas. The radar image of the station therefore looks like a dense collection of bright spots from which the outlines of the space station can be clearly identified. The central element on the station, to which all the modules are docked, has a grid structure that presents a multiplicity of reflecting surfaces to the radar beam, making it readily identifiable. This image has a resolution of about one meter (about 39 inches). In other words, objects can be depicted as discrete units--that is, shown separately--provided that they are at least one meter apart. If they are closer together than that, they tend to merge into a single block on a radar image. Since this image was taken, the station has expanded and is more than 90 percent complete, including a full complement of solar arrays. Image Credit: DLR
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  • APOD

Lincoln ve Topal Ankara’da yok

beni kategorize etme

Galatasaray, Süper Lig’de yarın oynayacağı Ankaraspor maçında iki yıldızı Lincoln ve Mehmet Topal’dan faydalanamayacak. Lincoln ve Mehmet Topal’ın tedavileri yoğun bir şekilde sürüdürülse de iki yıldızın da Ankaraspor maçında forma giymelerinin riskli olacağı ortaya çıkınca, teknik direktör Skibbe bu iki futbolcuyu kadrodan çıkarmak zorunda kaldı.

Lincoln ve Mehmet Topal’ın tedavilerinin sürdürüldüğü ve bu iki oyuncunun gelecek hafta perşembe günü UEFA Kupası’nda Metalist Kharkov ile oynanacak karşılaşmaya yetiştirilmeleri için çaba gösterildiği açıklandı.

Bu arada rahatsızlığının etkilerini tamamen atlatan ve son derece moralli olan Arda Turan, Skibbe tarafından Ankaraspor maçı kadrosuna dahil edildi. Dün gece geç saatlerde Brezilya’dan İstanbul’a gelen Meira ise Ankaraspor maçı için yapılan bu sabahki son antrenmana katıldı.

Meira, Ankara’ya götürülecek ve büyük bir olasılıkla maçta görev yapacak. Ayrıca uzun süredir sahalardan uzak olan Barış Özbek’in bu hafta içinde antrenmanlardaki performansı yeterli bulundu ve teknik direktör Skibbe tarafından Ankara’ya götürülmesine karar verildi. Barış’ın ikinci 45 dakikada görev yapacak fizik güce ulaştığı belirtildi. Barış gibi uzun süredir sakat olan Emre Güngör’ün ise bir gün önce sol arka adalesinde gerilme ortaya çıktı ve genç futbolcu son anda maç kadrosundan çıkarıldı.

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