Energy & Green Tech
The National Academies of Sciences, Engineering, and Medicine released on Jan. 12 a congressionally mandated report on reducing lead emissions from small aircraft—the single largest lead emitter in the United States. The ...
Jan 15, 2021
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8
Electronics & Semiconductors
Rutgers researchers have created a miniature device for measuring trace levels of toxic lead in sediments at the bottom of harbors, rivers and other waterways within minutes—far faster than currently available laboratory-based ...
Aug 26, 2020
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81
Energy & Green Tech
They are omnipresent and essential to navigating modern life. Small, light, rechargeable: lithium ion batteries have revolutionised our world in less than three decades.
Oct 9, 2019
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227
Energy & Green Tech
A study led by KU Leuven for the first time explains how a promising type of perovskites—man-made crystals that can convert sunlight into electricity—can be stabilized. As a result, the crystals turn black, enabling them ...
Jul 26, 2019
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134
Energy & Green Tech
A protective layer of epoxy resin helps prevent the leakage of pollutants from perovskite solar cells (PSCs), according to scientists from the Okinawa Institute of Science and Technology Graduate University (OIST). Adding ...
Jun 17, 2019
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121
Energy & Green Tech
Researchers at the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) established a new world efficiency record for quantum dot solar cells, at 13.4 percent.
Oct 31, 2017
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82
Energy & Green Tech
Publishing in Nature, EPFL scientists show how light affects perovskite film formation in solar cells, which is a critical factor in using them for cost-effective and energy-efficient photovoltaics.
Apr 26, 2017
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114
Energy & Green Tech
A breakthrough in solar power could make it cheaper and more commercially viable, thanks to research at the University of Warwick.
Nov 23, 2016
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2669
Lead (pronounced /ˈlɛd/) is a main-group element with symbol Pb (Latin: plumbum) and atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metals. Lead has a bluish-white color when freshly cut, but tarnishes to a dull grayish color when exposed to air. It has a shiny chrome-silver luster when melted into a liquid.
Lead is used in building construction, lead-acid batteries, bullets and shot, weights, and is part of solder, pewter, fusible alloys and radiation shields. Lead has the highest atomic number of all stable elements, although the next element, bismuth, has a half-life so long (longer than the estimated age of the universe) it can be considered stable. Like mercury, another heavy metal, lead is a potent neurotoxin that accumulates in soft tissues and bone over time. Lead poisoning was documented in ancient Rome, Greece, and China.
This text uses material from Wikipedia, licensed under CC BY-SA
