Imaging and mapping of electric fields at radio frequencies currently requires structures about the same size as the wavelength of the RF fields to be mapped. New theoretical and experimental work ...

Many current wireless communication, imaging and sensing technologies rely on components that convert oscillating electric ...

While the world sprints toward ever faster mobile speeds, another connectivity story is quietly unfolding at the opposite end of the dial. Low-frequency spectrum—the radio bands below one gigahertz ...

Physicists have created the first "frequency comb" in the extreme ultraviolet band of the spectrum, high-energy light less than 100 nanometers in wavelength. Laser-generated frequency combs are the ...

Imaging and mapping of electric fields at radio frequencies (RF)* currently requires the use of metallic structures such as dipoles, probes and reference antennas. To make such measurements ...

Physicists at JILA have created the first "frequency comb" in the extreme ultraviolet band of the spectrum, high-energy light less than 100 nanometers (nm) in wavelength. Laser-generated frequency ...

Optical frequency combs are breaking new ground in applications ranging from precision timing to breath analysis. Marie Freebody speaks to Jun Ye from JILA to find out more. Jun Ye is a fellow of JILA ...

In the last few weeks I've been working on a slightly more formal version of this post on black-body radiation for use in something else. One of the tricky things in writing about the development of ...

As Solar Cycle 25 peaks, learn how increased sunspots and ionospheric ionization are boosting shortwave radio propagation.