Abstract: Due to the ability of terahertz (THz) waves to penetrate nonpolar opaque optical materials, Doppler interferometric velocimeters using THz waves can measure the velocity of a target inside ...

In a makeshift demonstration kitchen in Concord, California, cooking oil splatters in and around a frying pan, which catches ...

NASA wants to make supersonic travel quieter. On Thursday the agency released new footage of its X-59 jet, a ...

High-frequency ultrasound platform for preclinical imaging, supporting real-time visualization of small animal anatomy and ...

Infrasound waves are usually too low for the human ear to actually hear, but they can still have a negative effect on ...

Coherent Doppler Lidar (CDL) has been used for measuring distance profile of wind velocities. Typical CDL transmits single-frequency short-duration pulses and receives signals scattered from aerosols ...

A new device for creating individual "phonons" — vibrational quanta — could give rise to the acoustic equivalent of lasers.

Doppler ultrasound works by measuring frequency shifts in sound waves as they bounce off moving red blood cells, translating them into waveforms that reflect blood flow patterns. In obstetrics, this ...

Doppler ultrasound blends physics and medical imaging to reveal the movement of blood through vessels and the heart. From diagnosing clots to assessing heart valve function, it’s a non-invasive tool ...