Lead
hideLead (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.
For more information about Lead, read the full article at
Wikipedia.
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News tagged with lead
Road trains may be coming soon to Europe (w/ Video)
Nov 13, 2009 |
4.6 / 5 (18) |
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(PhysOrg.com) -- Road trains linking vehicles together in a traveling convoy are planned for Europe. With only the lead vehicle being actively driven, the road trains would allow commuters to sleep, read a ...
Young adults' blood lead levels linked to depression, panic disorder
Medicine & Health / Psychology & Psychiatry
Dec 07, 2009 |
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Young adults with higher blood lead levels appear more likely to have major depression and panic disorders, even if they have exposure to lead levels generally considered safe, according to a report in the December issue ...
Childhood lead exposure causes permanent brain damage
Dec 01, 2009 |
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A study using functional magnetic resonance imaging (fMRI) to evaluate brain function revealed that adults who were exposed to lead as children incur permanent brain injury. The results were presented today at the annual ...
Exposure to lead, tobacco smoke raises risk of ADHD
Nov 23, 2009 |
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Children exposed prenatally to tobacco smoke and during childhood to lead face a particularly high risk for ADHD, according to research done at Cincinnati Children's Hospital Medical Center.
Search results for lead
Clean energy to grow into 1.6 trillion euros industry: WWF
5 hours ago |
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The clean energy technology sector will grow into a 1.6 trillion-euro (2.4 trillion-dollar) industry by 2020, becoming the third largest industrial sector after automobiles and electronics, WWF said Friday.
Governments turn to cloud seeding to fight drought
Space & Earth / Earth Sciences
7 hours ago |
1 / 5 (1) |
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(AP) -- On a mountaintop clearing in the Sierra Nevada stands a tall metal platform holding a crude furnace and a box of silver iodide solution that some scientists believe could help offer relief from searing ...
MRI detects breast cancer at earlier stage
7 hours ago |
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Magnetic resonance imaging (MRI) coupled with mammography detects almost all cancers at an early stage, thereby reducing the incidence of advanced stage breast cancer in high-risk women.
Vermicompost from pig manure grows healthy hibiscus
7 hours ago |
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Vermicomposting, the practice of using earthworms to turn waste into nutrient-rich fertilizer, can be an economical, organic waste management practice. During vermicomposting, earthworms and microorganisms stabilize organic ...
Climate projections underestimate CO2 impact
Space & Earth / Earth Sciences
7 hours ago |
3.5 / 5 (8) |
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The climate may be 30-50 percent more sensitive to atmospheric carbon dioxide in the long term than previously thought, according to a recent study published in Nature Geoscience.
Probing Question: What are wildlife corridors?
8 hours ago |
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Imagine that an unknown force hacks your city into two chunks. Because of this new barrier, you can’t get from your home to your office or the grocery store. Suddenly, your access to critical resources is ...
Researchers engineer bacteria to turn carbon dioxide into liquid fuel
9 hours ago |
4.7 / 5 (22) |
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(PhysOrg.com) -- The genetically modified cyanobacterium consumes carbon dioxide and produces the liquid fuel isobutanol by using energy from sunlight.
Early carnivorous dinosaurs crossed continents
Other Sciences / Archaeology & Fossils
10 hours ago |
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Did the first dinosaurs wander across continents or stay put where they first evolved? The first dinosaurs evolved 230 million years ago when the continents were assembled into one landmass called Pangea. ...
New approach to emissions makes climate and air quality models more accurate, major study finds
Space & Earth / Earth Sciences
11 hours ago |
5 / 5 (2) |
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It's no secret that the emissions leaving a car tailpipe or factory smokestack affect climate and air quality. Even trees release chemicals that influence the atmosphere. But until now, scientists have struggled to know where ...
Earth's atmosphere came from outer space, find scientists
Space & Earth / Earth Sciences
11 hours ago |
4 / 5 (17) |
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(PhysOrg.com) -- The gases which formed the Earth's atmosphere - and probably its oceans - did not come from inside the Earth but from outer space, according to a study by University of Manchester and University ...
List of search results for lead
