Sweat stains on clothing can trigger alarms on airport body scanners. False alarms are common, and travelers can request a ...

This paper presents a stable fiber-based radio frequency (RF) transmission system and investigates the effect of transmission frequency on the system’s frequency stability. By changing the frequency ...

A faint radio glow reveals a million-light-year halo enveloping one of the earliest galaxy clusters, hinting that energetic ...

The next generation of large telescopes for radio astronomy at frequencies below 100 MHz will consist of tens of thousands of wide-band dipole-like antennas, each individually instrumented with a ...