We value gold for many reasons: its beauty, its usefulness as jewelry, and its rarity. Gold is rare on Earth in part because it's also rare in the universe. Unlike elements like carbon or iron, it cannot be created within ...
Astronomy
Jul 17, 2013
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(Phys.org) -- Scientists at the Harvard-Smithsonian Center for Astrophysics (CfA) and their colleagues at the Heidelberg Institute for Theoretical Studies (HITS) have invented a new computational approach that can accurately ...
Astronomy
Aug 15, 2012
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(PhysOrg.com) -- A specialized camera on a telescope operated by U.K. astronomers from Liverpool has made the first measurement of magnetic fields in the afterglow of a gamma-ray burst (GRB). The result is reported in the ...
Astronomy
Dec 9, 2009
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The application of photoluminescent materials in the field of information security has attracted much attention. A number of anti-counterfeiting technologies have been developed, including watermarks, 2D codes and luminescent ...
Nanomaterials
Jul 5, 2023
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Lightning can produce X-rays and gamma radiation. In the past, researchers thought that this phenomenon only lasted for a very short time, about one ten-thousandth of a second. However, the ionizing radiation of lightning ...
Earth Sciences
Oct 24, 2017
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Scientists at the University of Turku, Finland, have discovered the origin of the glow in the natural mineral that generates white luminescence in the dark. By studying natural minerals, significant new knowledge can be gained ...
Materials Science
Nov 3, 2020
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