Making a dark human hair transparent, or even an opaque bar of silicon: this optical "sorcery" is possible by manipulating the incident light. This new phenomenon is called "mutual extinction and transparency." Until now ...
Optics & Photonics
Oct 18, 2021
0
9
If two black holes merge in the middle of space, and nobody's around to see it, does it really happen?
Astronomy
Sep 13, 2021
0
44
As electronic devices decrease in size, their component parts, like speakers, need to shrink as well.
General Physics
Aug 31, 2021
1
25
Like light waves, magnetic waves move through materials at a fixed maximum velocity. However, at the smallest possible length scale (nanometres) and the shortest possible time scale (femtoseconds), magnetism behaves differently. ...
General Physics
Aug 26, 2021
1
1913
Observations of gravitational waves in space have sparked public interest in space technology and an interactive exhibit modeled on a real-life gravitational-wave detector is helping to explain this new field of science.
Education
Aug 11, 2021
0
790
An international team from Delft, Lancaster, Nijmegen, Kiev and Salerno has demonstrated a new technique to generate magnetic waves that propagate through the material at a speed much faster than the speed of sound.
Quantum Physics
Jul 29, 2021
0
3067
Optical superoscillation refers to a wave packet that can oscillate locally in a frequency exceeding its highest Fourier component. This intriguing phenomenon enables production of extremely localized waves that can break ...
Optics & Photonics
Jun 25, 2021
0
18
With a wave length of about half a millimeter, terahertz radiation fills the gap between visible light and radio waves. This radiation lends itself very well to the in-depth measurement of the electrical properties of new ...
Optics & Photonics
Jun 18, 2021
0
1
An international team of scientists, led by astrophysicists from the University of Bath in the UK, has measured the magnetic field in a far-off Gamma-Ray Burst, confirming for the first time a decades-long theoretical prediction—that ...
Astronomy
Jun 16, 2021
0
675
The internet era that we live in depends completely on the transfer of vast amounts of information over optical fibers. Optical fibers are literally everywhere. In fact, the overall length of optical fibers installed on our ...
Optics & Photonics
Jun 14, 2021
0
3
