Geostationary orbit simulation in GlowScript VPython: a practical tutorial that demonstrates orbital mechanics and physics-based visualization of satellites maintaining a fixed position relative to ...

March 17, 2026 • US-Israeli airstrikes on oil depots culminated in ‘black rain’ in Iran early last week – a phenomenon usually caused by large amounts of soot, carbon and other pollutants in the air.

Abstract: In this article, for the first time, a novel stepper motor predicated on harmonic drive principles is introduced. The input rotation is generated by switching of electromagnetic attraction.

Abstract: This study introduces a novel Dual-Motor Actuation (DMA) architecture based on a modified cycloidal gear mechanism which, to the best of the authors’ knowledge, has not been previously ...