The orbital angular momentum (OAM) of electromagnetic waves—a kind of "structured light"—is associated with a helical or twisted wavefront.
Optics & Photonics
Apr 19, 2023
0
430
Testing the possibility of models of gravity different from general relativity may be closer to home than we think. In a paper published on the arXiv preprint server, a team of researchers has proposed that we might be able ...
Planetary Sciences
Apr 17, 2023
0
49
Some classical computers have error correction built into their memories based on bits; quantum computers, to be workable in the future, will need error correction mechanisms, too, based on the vastly more sensitive qubits.
Quantum Physics
Apr 12, 2023
0
311
Have you ever wondered what a volcano looks like from space? Today, we're counting down our picks of the most impressive volcanoes around the world—captured by satellites.
Environment
Apr 10, 2023
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26
Researchers have discovered that in the exotic conditions of the early universe, waves of gravity may have shaken space-time so hard that they spontaneously created radiation.
Astronomy
Apr 10, 2023
39
547
Astronauts aboard the International Space Station are hard at work on research guided by students and researchers from the University of Colorado Boulder.
Space Exploration
Apr 10, 2023
0
3
Researchers have developed a way to create photonic time crystals, and they have shown that these bizarre, artificial materials amplify the light that shines on them. These findings, described in a paper in Science Advances, ...
Optics & Photonics
Apr 5, 2023
0
371
The soot produced by unburnt hydrocarbon flames is the second largest contributor to global warming, while also harming human health. Researchers have developed state-of-the-art, high-speed imaging techniques to study turbulent ...
NASA is partnering with a Pentagon research agency to develop a nuclear-powered rocket engine in preparation for sending astronauts to Mars.
Space Exploration
Jan 24, 2023
11
92
One of the most exciting applications of quantum computers will be to direct their gaze inwards, at the very quantum rules that make them tick. Quantum computers can be used to simulate quantum physics itself, and perhaps ...
Quantum Physics
Jan 23, 2023
1
700
