The Crab Nebula seen in new light by NASA's Webb
Exquisite, never-before-seen details help unravel the supernova remnant's puzzling history.
Astronomy
Oct 30, 2023
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254
News tagged with electromagnetism
Revolutionizing radar: Integrated THz emitter for precise rotating target detection
You may not realize it, but the Doppler effect is everywhere in our lives, from tracking the speed of cars with radar to locating satellites in the sky. It's all about how waves change their frequency when a source (like ...
Optics & Photonics
Oct 20, 2023
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321
Realizing vertical ultraviolet-B semiconductor laser diodes for high optical output
Ultraviolet (UV) rays are electromagnetic waves with wavelengths ranging from 100 to 380 nanometers (nm). These wavelengths can be classified into three regions: UV-A (315–380 nm), UV-B (280–315 nm), and UV-C (100–280 ...
Optics & Photonics
Oct 20, 2023
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1
Chaos Raman distributed optical fiber sensing
The timeliness and accuracy of detection technology is directly related to the safety of people's lives and property. In the application of this technology, temperature is a physical quantity that must to be focused on. Compared ...
Optics & Photonics
Oct 19, 2023
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6
Photonic crystals bend light as though it were under the influence of gravity
A collaborative group of researchers has manipulated the behavior of light as if it were under the influence of gravity. The findings, which were published in the journal Physical Review A on September 28, 2023, have far-reaching ...
Condensed Matter
Oct 16, 2023
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85
Five things to know about NASA's mission to a metal world
For the first time ever, a NASA probe is journeying to an object composed not of rock, ice, or gas, but metal: the asteroid Psyche.
Planetary Sciences
Oct 12, 2023
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57
Whispering gallery microprobe opens up new opportunities for optical spectroscopy
Light–matter interaction is one of the most basic ways people observe the physical world. While reflection and refraction of light reveal the morphology of matter, inelastic scattering of light, like Raman scattering, encodes ...
Optics & Photonics
Oct 11, 2023
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5
Source of electron acceleration and X-ray aurora of Mercury ̶ local chorus waves detected
Since Mercury is the closest planet to the sun among the solar system planets, it is strongly influenced by the solar wind, a high-speed (several hundred km/s) stream of plasma blowing from the sun. Explorations of Mercury ...
Astronomy
Oct 10, 2023
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229
Magnetic fusion plasma engines could carry us across the solar system and into interstellar space
Missions to the moon, missions to Mars, robotic explorers to the outer solar system, a mission to the nearest star, and maybe even a spacecraft to catch up to interstellar objects passing through our system. If you think ...
Space Exploration
Oct 6, 2023
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190
Researchers revolutionize understanding of supermassive black hole accretion radiation in quasars
Through the study of the optical to extreme ultraviolet radiation generated by the accretion of supermassive black holes at the centers of quasars, Associate Professor Cai Zhenyi and Professor Wang Junxian from the Department ...
Astronomy
Oct 6, 2023
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