The Earth's liquid molten outer core, composed mostly of iron and nickel, exerts an electromagnetic field extending from the north and south pole that protects the planet from harmful solar particle radiation.
Planetary Sciences
May 27, 2024
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A tiny NASA satellite was launched Saturday from New Zealand with the mission of improving climate change prediction by measuring heat escaping from Earth's poles for the first time.
Earth Sciences
May 25, 2024
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212
Materials that can maintain a magnetized state by themselves without an external magnetic field (i.e., permanent magnets) are called ferromagnets. Ferroelectrics can be thought of as the electric counterpart to ferromagnets, ...
Nanophysics
May 31, 2024
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129
A new study published in Nature, conducted by an international collaboration team led by Prof. Wei Li from the Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP) of the Chinese Academy of Sciences, introduces ...
Optics & Photonics
May 27, 2024
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155
Researchers at the Ningbo Institute of Materials Technology and Engineering (NIMTE) of the Chinese Academy of Sciences, in collaboration with research groups from the University of Electronic Science and Technology of China ...
Nanophysics
Jun 6, 2024
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150
The basis of the marine food web in the Arctic, the phytoplankton, responds to heat waves much differently than to constantly elevated temperatures. This has been found by the first targeted experiments on the topic, which ...
Ecology
May 17, 2024
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392
Researchers have designed a novel oxide material, Ca3Co3O8, through atomic precision manipulation of correlated oxides. It demonstrated a remarkable combination of properties—ferromagnetism, polar distortion and metallicity, ...
Condensed Matter
May 29, 2024
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77
The awe-inspiring aurorae seen on Earth, known as the Northern and Southern Lights, have been a source of fascination for centuries. Between May 10 and 12, 2024, the most powerful aurora event in 21 years reminded us of the ...
Planetary Sciences
May 27, 2024
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180
When chiral gold nanoparticles are irradiated with near-infrared femtosecond pulses, visible emission of luminescence is observed. In a study published in Advanced Optical Materials, this luminescence was found to yield high ...
Nanophysics
Jun 5, 2024
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36
Will clouds help cool or warm our world in the years ahead? The EarthCARE satellite will blast off Tuesday from California on a mission to find out, aiming to investigate what role clouds could play in the fight against climate ...
Earth Sciences
May 26, 2024
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A polarizer is an optical filter that passes light of a specific polarization and blocks waves of other polarizations. It can convert a beam of light of undefined or mixed polarization into a beam with well-defined polarization. The common types of polarizers are linear polarizers and circular polarizers. Polarizers are used in many optical techniques and instruments, and polarizing filters find applications in photography and liquid crystal display technology. Polarizers can also be made for other types of electromagnetic waves besides light, such as radio waves, microwaves, and X-rays.
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