The Large Hadron Collider plays with Albert Einstein's famous equation, E = mc2, to transform matter into energy and then back into different forms of matter. But on rare occasions, it can skip the first step and collide ...
General Physics
Sep 3, 2020
4
2382
Giant elliptical galaxies, the oldest known large galactic structures in the universe, have no spiral arms and little or no current star formation activity, but their central supermassive black holes are often active galactic ...
Astronomy
Aug 21, 2020
0
102
Axions and dark photons are two of the most promising types of particles for unveiling new physics. The axion scalar field explains the absence of an electric dipole moment for the neutron, while the dark photon resembles ...
Light-by-light scattering is a rare phenomenon in which two photons—particles of light—interact, producing another pair of photons. Direct observation of this process at high energy had proven elusive for decades, until ...
General Physics
Jun 19, 2020
0
44
Laser light traveling through ornately microfabricated glass has been shown to interact with itself to form self-sustaining wave patterns called solitons. The intricate design fabricated in the glass is a type of "photonic ...
Optics & Photonics
Jun 1, 2020
0
745
Copper oxidation generally means tarnished surfaces and corroded electronics. But the compound Cu2O, or cuprous oxide, is a promising material for quantum photonics, optoelectronics and renewable energy technologies. Now, ...
Optics & Photonics
Apr 15, 2020
0
235
When the American physicist Arthur Compton discovered that light waves behave like particles in 1922, and could knock electrons out of atoms during an impact experiment, it was a milestone for quantum mechanics. Five years ...
Quantum Physics
Apr 15, 2020
1
1722
Past cosmological and astrophysical observations suggest that over one quarter of the universe's energy density is made up of a non-conventional type of matter known as dark matter. This type of matter is believed to be composed ...
Using plasma to control microwaves for beaming direct energy toward a specific point is explored for their durability in high-energy electric fields and their reconfigurable structure. High power microwave beams, similar ...
Plasma Physics
Apr 7, 2020
1
133
Photonic cavities are an essential part of many modern optical devices, from laser pointers to microwave ovens. Just as we can store water in a tank and create standing waves on the surface of the water, we can confine light ...
Optics & Photonics
Mar 25, 2020
0
180
