Physicists identify gravitational flux and helicity as key topological properties that remain unchanged as the universe bends ...

Albert Einstein’s life was a blend of curiosity, creativity, and groundbreaking science that forever changed how we see the universe. From his childhood building blocks to theories that bent time and ...

The concept of spacetime, first described in Einstein's theory of general relativity, has since been widely studied by many ...

Abstract: We present a systematic design method for a cylindrical conformal array of rectangular waveguide-fed metasurfaces. The conformal metasurface consists of multiple curved rectangular ...

The cosmological constant is the mathematical description of the energy that drives the ever-accelerating expansion of the ...

Abstract: The latest communication technologies demanded broad bandwidth, high gain, and low-profile antennas that enhanced performance throughout the frequency's bandwidth region. Here, two antennas ...

Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects on an ongoing basis without requiring additional payments each time you use that ...