In 1956, theoretical physicist David Pines predicted that electrons in a solid can do something strange. While they normally have a mass and an electric charge, Pines asserted that they can combine to form a composite particle ...
General Physics
Aug 9, 2023
5
1817
Waste from computers and cell phones, solar panels and other discarded electronics are becoming an important source of noble metals alongside mining. Researchers at the University of Helsinki have developed sustainable dissolution ...
Analytical Chemistry
May 14, 2024
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191
Earth's inner core, a hot iron ball the size of Pluto, has stopped spinning faster than the planet's surface and might now be rotating slower than it, research suggested on Monday.
Earth Sciences
Jan 24, 2023
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3831
Colombia's army has shared unprecedented images of the legendary San Jose galleon shipwreck, hidden underwater for three centuries and believed to have been carrying riches worth billions of dollars in today's money.
Archaeology
Jun 7, 2022
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1100
For the past two centuries, humans have relied on fossil fuels for concentrated energy; hundreds of millions of years of photosynthesis packed into a convenient, energy-dense substance. But that supply is finite, and fossil ...
Analytical Chemistry
Nov 11, 2022
11
1331
At first, the Norwegian man thought his metal detector reacted to chocolate money buried in the soil. It turned out to be nine pendants, three rings and 10 gold pearls someone might have worn as showy jewelry 1,500 years ...
Archaeology
Sep 7, 2023
1
1266
Silicon, the standard semiconducting material used in a host of applications—computer central processing units (CPUs), semiconductor chips, detectors, and solar cells—is an abundant, naturally occurring material. However, ...
Condensed Matter
Feb 16, 2023
4
2381
Late last year, Caltech researchers revealed that they had developed a new fabrication technique for printing microsized metal parts containing features about as thick as three or four sheets of paper.
Nanophysics
Sep 21, 2023
1
81
An electrochemical reaction that splits apart water molecules to produce oxygen is at the heart of multiple approaches aiming to produce alternative fuels for transportation. But this reaction has to be facilitated by a catalyst ...
Materials Science
Feb 25, 2022
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1396
Scientists at Yale and the Southwest Research Institute (SRI) say they've hit the jackpot with some valuable new information about the story of gold.
Earth Sciences
Oct 10, 2023
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1441
In chemistry, a metal (Greek: Metallo, Μέταλλο) is an element, compound, or alloy characterized by high electrical conductivity. In a metal, atoms readily lose electrons to form positive ions (cations); those ions are surrounded by delocalized electrons, which are responsible for the conductivity. The thus produced solid is held by electrostatic interactions between the ions and the electron cloud, which are called metallic bonds.
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