简介：This film reveals how seven ingenious technological breakthroughs enabled engineers to build the biggest aircraft carrier in the world - the USS Nimitz, weighing more than 100,000 tons. From steam catapults and mirror landing aids to advanced nuclear-powe
简介：The discovery of China's Terracotta Army in 1974 captured the imagination of the world. But that first dig only revealed a fraction of this enormous and extraordinary treasure. Since then, scientists have resumed work on the site, and their research
简介：Nova's examination or how thousands to terra cotta soldiers in Qin dynasty's terra cotta army were created digresses into reviews of Qin history and technology.