Stirling engines, like the one pictured, are now being used by Chinese scientists for high-power microwave (HPM) weapons in a reputed world first. Photo: CSSC It says that the weapon system, which can easily fit into a truck, boasts a significant reduction in energy consumption for generating a strong magnetic field compared with existing technologies. According to preliminary tests, China claims it consumes only one-fifth of the energy required by current methods and can operate continuously for four hours. The development of low-energy, compact, superconducting magnet systems is essential for large-scale production and use of microwave weapons. The report claims...