MIDLAND, Texas--(BUSINESS WIRE)--AST SpaceMobile, Inc. (“AST SpaceMobile”) (NASDAQ: ASTS), the company building the first and only space-based cellular broadband network accessible directly by ...

Optical vortices—light beams carrying orbital angular momentum (OAM)—are characterized by helical wavefronts and phase singularities. While they have been widely studied in recent decades, two ...

We all know we live in three-dimensional space. But what does it mean when people talk about four dimensions? Is it just a bigger kind of space? Is it “space-time”, the popular idea which emerged from ...

Vertical cavity surface emitting lasers, or VCSELs, are among the most widely used laser sources today, powering applications from data communications to consumer products such as optical mice and ...

When you drill down into the very fabric of reality—where elementary particles make up the matter that is you and me and everything around us in three-dimensional space—things get divided nicely into ...

For many years, cesium atomic clocks have been reliably keeping time around the world. But the future belongs to even more accurate clocks: optical atomic clocks. In a few years' time, they could ...

Forbes contributors publish independent expert analyses and insights. Dr. Lance B. Eliot is a world-renowned AI scientist and consultant. This voice experience is generated by AI. Learn more. This ...

To continue reading this content, please enable JavaScript in your browser settings and refresh this page. Preview this article 1 min A solar developer has paid ...

Abstract: Two-dimensional beam scanning is crucial for microwave imaging. For conventional frequency-scanning antennas, such as leaky-wave antennas, their beams typically scan along only one dimension ...

Abstract: We propose and simulate a two-dimensional optical phased array using a silicon-based optical integrated circuit. Beam steering is achieved over a range of 11.73° × 11.9° at a fixed ...