Research at Hokkaido University has revealed that elusive particles called neutrinos can interact with photons, the fundamental particles of light and other electromagnetic radiation, in ways not previously detected. The ...
Optics & Photonics
Sep 11, 2023
3
114
Medical imaging via X-rays, CT scans, MRIs and ultrasounds provide health-care professionals with unique perspectives and a better understanding of what's happening inside a patient's body. Using various forms of waves, these ...
General Physics
Aug 14, 2023
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4
Physicists at St Petersburg University have studied planetary waves and discovered that they can generate disturbances in the stratosphere causing extreme warming and cooling in the Arctic and mid-latitudes. Numerical modeling ...
Earth Sciences
Aug 2, 2023
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1
Space is a dangerous place. From micro-meteorites and electromagnetic interference to fires in space and extreme heat and cold, we need to develop new materials to enable the next generation of space travel and intergalactic ...
Space Exploration
Jul 26, 2023
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11
Metamaterials are a type of artificial material which, as the prefix "meta"—meaning in Greek "after" or "beyond"—indicates, demonstrate electromagnetic properties and other characteristics not found in nature.
Condensed Matter
Jul 17, 2023
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4
By conducting Varstrometry for Off-nucleus and Dual sub-Kpc AGN (VODKA), astronomers from the University of Illinois at Urbana-Champaign and elsewhere, have investigated a quasar known as SDSS J0823+2418. The study, published ...
Using various space telescopes, an international team of astronomers have observed a recently detected luminous quasar known as SMSS J114447.77-430859.3, or J1144 for short. Results of the observational campaign, available ...
Dark matter, matter in the universe that does not emit, absorb or reflect light, cannot be directly detected using conventional telescopes or other imaging technologies. Astrophysicists have thus been trying to identify alternative ...
A multi-institutional team of biologists and ecologists from Chile and Argentina has found evidence suggesting that electromagnetic fields emanating from electrical towers disrupt pollinating honeybees. The research is published ...
Astronomers have revealed new evidence about the properties of the giant bubbles of high-energy gas that extend far above and below the Milky Way galaxy's center.
Astronomy
May 8, 2023
5
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Electromagnetic radiation (sometimes abbreviated EMR) is a ubiquitous phenomenon that takes the form of self-propagating waves in a vacuum or in matter. It consists of electric and magnetic field components which oscillate in phase perpendicular to each other and perpendicular to the direction of energy propagation. Electromagnetic radiation is classified into several types according to the frequency of its wave; these types include (in order of increasing frequency and decreasing wavelength): radio waves, microwaves, terahertz radiation, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays. A small and somewhat variable window of frequencies is sensed by the eyes of various organisms; this is what we call the visible spectrum, or light.
EM radiation carries energy and momentum that may be imparted to matter with which it interacts.
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