Optical vortices—light beams carrying orbital angular momentum (OAM)—are characterized by helical wavefronts and phase ...

In this episode, a faster and more accurate weather radar system provides instantaneous full 3D images of storm cloud activity 10km up into the sky, promising more precise weather forecasting. There's ...

Abstract: In this paper, a low-cost K-band phased array antenna is designed for LEO satellite communication. The design reduces the number of T/R components by allowing multiple elements to share a ...

Abstract: In this communication, a novel circularly polarized (CP) phased array design with low radar cross section (RCS) is proposed. On the one hand, a wideband absorber consisting of multiple-layer ...

April 9, 2026 • The Artemis II astronauts don't have a lot of space to exercise. That's why they've got the flywheel — a small device that can be used for strength and cardio workouts. April 8, 2026 • ...

This project simulates the 3D attitude control of a quadcopter using PID controllers in MATLAB. The simulation numerically integrates the quadcopter’s nonlinear equations of motion using the ODE45 ...

(1, 'Aria', 12, ARRAY['engine_part','fuel_cell','toolkit']), (2, 'Borin', 9, ARRAY['navigation_chip',&#x27 ...