Abstract: Given the current high school students' bedtime management, to maintain the students' bedtime order and reduce the burden of teachers' sleep check work, this paper puts forward a design ...

Li-Fi is a wireless data system remarkably similar to Wi-Fi, but uses light to send information. Data rates can hit a gigabit ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Nancy Redd Shifts in the number of daylight hours — due to changing seasons or ...

China’s microelectromechanical systems (MEMS) sensor industry is surging, but technical gaps, fragmented production and coordination challenges hinder its full potential. As global demand accelerates, ...

Abstract: The vortex polarization direction indicator (Vortex-PDI), comprising a half-wave vortex retarder and an analyzer, enables single-shot characterization of linearly polarized light. This study ...