News tagged with gem stones
New 3-D structures assemble with remarkable precision
(Phys.org) -- While it is relatively straightforward to build a box on the macroscale, it is much more challenging at smaller micro- and nanometer length scales. At those sizes, three-dimensional (3-D) structures are too ...
Nanotechnology / Nanomaterials
Apr 24, 2012 |
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Look ma, no mercury in fillings!
Tooth enamel is hardest material in the human body because it's made almost entirely of minerals. As tough as it may be, however, enamel can be broken down by bacteria, forming cavities and eventually destroying the tooth. ...
Nov 09, 2009 |
5 / 5 (1) |
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Search results for gem stones
Voyager seeks the answer blowin' in the wind
(PhysOrg.com) -- In which direction is the sun's stream of charged particles banking when it nears the edge of the solar system? The answer, scientists know, is blowing in the wind. It's just a matter of getting ...
Space & Earth / Space Exploration
Mar 09, 2011 |
4.9 / 5 (9) |
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NC farm produces emerald shaped into massive gem
(AP) -- An emerald so large it's being compared with the crown jewels of Russian empress Catherine the Great was pulled from a pit near corn rows at a North Carolina farm.
Other Sciences / Archaeology & Fossils
Aug 30, 2010 |
4.5 / 5 (6) |
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New Moon Rock Is Fit for a King
(PhysOrg.com) -- People don't discover a new type of moon rock every day, so consider the odds of finding one rich in a mineral that England's King Henry V wore on his battle helmet. And then imagine spotting, ...
Space & Earth / Space Exploration
Apr 09, 2010 |
4.9 / 5 (15) |
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Naval research laboratory takes a close look at unique diamonds
The song says that "diamonds are a girl's best friend," but scientists at the Naval Research Laboratory are finding that diamonds are a researcher's best friend too.
Mar 23, 2010 |
3.8 / 5 (5) |
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A rare discovery: An engraved gemstone carrying a portrait of Alexander the Great
A rare and surprising archaeological discovery at Tel Dor: A gemstone engraved with the portrait of Alexander the Great was uncovered during excavations by an archaeological team directed by Dr. Ayelet Gilboa ...
Other Sciences / Archaeology & Fossils
Sep 15, 2009 |
4.5 / 5 (22) |
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Made by man, finished by nature: Now's the best time to hit the beach to hunt for sea glass
It may have once been part of a beer bottle. Or a vase. Or a Milk of Magnesia container. But after decades of being tumbled by water, after years of having its edges softened and rounded, it sits on the beach, a colored ...
Jun 11, 2009 |
4 / 5 (4) |
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Trading carats for nanometers - and defective diamonds for crystal clear microscopy
(PhysOrg.com) -- Large, perfect diamonds are precious to almost all of us but to some scientists, it is the defects that really matter. This is because defects can form nanoscopic color centers, which play ...
Mar 02, 2009 |
4.8 / 5 (5) |
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DNA is blueprint, contractor and construction worker for new structures
DNA is the blueprint of all life, giving instruction and function to organisms ranging from simple one-celled bacteria to complex human beings. Now Northwestern University researchers report they have used DNA as the blueprint, ...
Nanotechnology / Nanomaterials
Jan 30, 2008 |
4.8 / 5 (36) |
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Hope Diamond's phosphorescence key to fingerprinting
Shine a white light on the Hope Diamond and it will dazzle you with the brilliance of an amazing blue diamond. Shine an ultraviolet light on the Hope Diamond and the gem will glow red-orange for about five ...
Jan 07, 2008 |
4.6 / 5 (5) |
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Polymer opal films shed new kind of light on nature
Imagine cleaning out your refrigerator and being able to tell at a glance whether perishable food items have spoiled, because the packaging has changed its color, or being able to tell if your dollar bill is counterfeit simply ...
Jul 23, 2007 |
4.5 / 5 (17) |
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List of search results for gem stones
