Light aircraft often use a heading indicator as a way to know where they’re going. Retired instrumentation engineer [Don Welch] recreated a heading indicator of his own, using cheap ...

Combining a database with over 1.5 billion shots, GPS and an ultra-accurate laser, the Arccos Smart Laser goes far beyond distance and slope.

Israel targeted Iran's oil facilities for the first time early Sunday, with videos showing huge flames lighting up the sky, while Iranian state media reported officials were close to announcing a ...

Abstract: Distributed acoustic sensors (DAS) based on coding technology can extend the sensing distance while ensuring high spatial resolution. However, due to the high sidelobe level of the aperiodic ...