Risultati di ricerca
12 ore fa · A second, incompatible high-speed prototype was constructed by Max Bögl and Chengdu Xinzhu Road & Bridge Machinery Co. Ltd. and unveiled in January 2021. Developed at Southwest Jiaotong University in Chengdu, the Super Bullet Maglev design uses high-temperature superconducting magnets, is designed for 620 km/h (390 mph) and was demonstrated on a 165-metre (180 yd) test track.
12 ore fa · Air Force film introducing the Navstar Global Positioning System, circa 1977 GPS constellation system animation. The GPS project was launched in the United States in 1973 to overcome the limitations of previous navigation systems, combining ideas from several predecessors, including classified engineering design studies from the 1960s.
- United States
- Military, civilian
- Operational
- US Space Force
12 ore fa · The 1964–1965 New York World's Fair was a world's fair that held over 140 pavilions and 110 restaurants representing 80 nations, 24 U.S. states, and over 45 corporations with the goal and the final result of building exhibits or attractions at Flushing Meadows–Corona Park in Queens, New York City. [1] [2] [3] The immense fair covered 646 ...
