Tonight, winds will ease away and it will stay calm and mostly cloudy throughout. The cloud will fragment at times allowing for the odd clear break and it will be chillier under light easterly winds.

IN an earlier paper1, we have described a new type of interferometer which has been used to measure the angular diameter of radio stars2. In this instrument the signals from two aerials Ax and A2 (Fig ...

Abstract: An artificial metalens manipulates the electromagnetic wavefront phase via deploying transmitted phase and amplitude of metasurfaces units, which exhibits excellent merits in beam steering ...