Earthquake scientists rely on distant seismic instruments to infer how faults rupture during large earthquakes. This video provides the first direct evidence.

In this paper, a simple harmonic motion experiment teaching platform based on Human-machine Engineering is proposed. Based on the phenomenon of friction oscillators, a new simple harmonic motion ...

A novel direction-finding method by the time-modulated array (TMA) is proposed through analyzing the harmonic characteristic of received signal, which requires only two antenna elements and a single ...

Sudan was thrown into disarray in 2023 when its army and a paramilitary group began a power struggle.