Visualizing the Spin & Radiation of the Extended Electron in Magnetic Field

This article presents illustrations of an extended model of the electron to visualize how it spins and radiates in the external magnetic field. A time-varying magnetic field B produces a rotational induced electric field E which rotates (spins) the electron about its axis. In time-constant magnetic field: the electron radiates the cyclotron radiation. In time-varying magnetic field: synchrotron radiation is generated. The couplings between spin, acceleration and radiation will be discussed.

中承式桁架拱桥节段模型风洞试验研究

通过重庆朝天门长江大桥的节段模型静力试验和动力试验,获得了主梁及主拱的静力三分力系数随攻角的变化规律、主梁的颤振特性,识别了主梁的8个颤振导数,并对试验获得的结果进行了详细分析;对该桥的主梁和主拱结构的抗风性能进行了评价。