A study reported in the journal acta ethologica has recorded the use of ultrasound by amphibians for the first time in South America. It also describes the first documented case of the use of ultrasound for defense against ...
Plants & Animals
Apr 4, 2024
1
391
An international team of astronomers has performed radio observations of a massive galaxy cluster known as ACT-CL J0329.2-2330, which resulted in the detection of a new radio halo in this cluster. The finding was reported ...
The detection of gravitational waves stands as one of the most significant achievements in modern physics. In 2017, gravitational waves from the merger of a binary neutron star were detected for the first time which uncovered ...
General Physics
Apr 5, 2024
0
570
In a new Nature study, Columbia Engineering researchers have built a photonic chip that is able to produce high-quality, ultra-low-noise microwave signals using only a single laser. The compact device—a chip so small, it ...
Optics & Photonics
Mar 20, 2024
0
503
Exploring wave propagation and localization in various media has been a core focus in optics and acoustics. Specifically, in photonics and phononics, scientists have been dedicated to understanding and controlling the behavior ...
Optics & Photonics
Mar 22, 2024
0
18
The optical frequency comb, a spectrum of optical radiation composed of evenly spaced and phase-coherent narrow spectral lines, was initially developed for precise time and frequency measurements. Over the past two decades, ...
Optics & Photonics
Apr 1, 2024
0
8
Birds' bodies are changing and so are their songs. Over the last 70 years, birds worldwide have been noticeably shrinking in mass or expanding in wing length.
Plants & Animals
Apr 4, 2024
0
1
A new study led by researchers at the University of Oxford has found that birds that are more social are more likely to use novel sources of food. The findings have been published in iScience.
Plants & Animals
Apr 3, 2024
0
50
Tropical marine species venturing into new areas as the climate changes could fall victim to another effect of the phenomenon—as bursts of cold water from the deep sea suddenly kill them.
Plants & Animals
Apr 16, 2024
0
6
Next-generation wireless signals will no longer emanate indiscriminately from a base station as is the case now but will likely take the form of targeted directional beams. However, any physical interference—an object or ...
General Physics
3 hours ago
0
1
