Academic Background Introduction The motion of a pendulum is one of the fundamental problems in classical mechanics, while the vibration of a pendulum on a flexible and stretchable string involves more complex nonlinear dynamic phenomena. Such problems have broad significance in practical applications, such as in engineering structures, biomechanic...

Study on Chorus Waves and Field-Particle Energy Transfer in Space Academic Background Chorus waves are among the strongest naturally occurring electromagnetic emissions, widely observed in the magnetospheres of Earth and other planets. These waves not only pose radiation hazards to satellites and astronauts but also play a crucial role in accelerat...