Wet comb: NIST’s tabletop frequency comb being used to identify water molecules in air. The yellow squiggle at the top of the screen is the electric field of mid-infrared laser light that has passed ...

All wireless connectivity is based on electromagnetic frequencies, with different parts of the frequency spectrum being used for different purposes, such as 5G or 2G. The precise way in which this is ...

Frequency modulation spectroscopy is a nondestructive technology for determining the water activity of pharmaceutical samples. This article discusses the various pharmaceutical applications of ...

Prior to 1994 spectrum management in South Africa was performed by the operators themselves: the SABC in the case of broadcasting, and Telkom in the case of non-broadcasting spectrum. The promulgation ...

A new quantum sensor can analyze the full spectrum of radio frequency and real-world signals, unleashing new potentials for soldier communications, spectrum awareness and electronic warfare. Army ...

The key parameters of the FSS technique and their impact on EMI performance. How to evaluate FSS performance using simulation, ICs, and a signal generator. Frequency spread spectrum (FSS) is a ...