News tagged with grains
Researchers improve efficiency of low-cost solar cells
(PhysOrg.com) -- As part of the recent progress in improving solar cells for widespread use, researchers from Purdue University have designed solar cells made of low-cost, abundant materials that are easily ...
Nanotechnology / Nanomaterials
Dec 07, 2010 |
4.5 / 5 (19) |
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Scientists Investigate Cause of 'Singing Dunes'
(PhysOrg.com) -- In more than 30 locations around the world, the phenomenon of singing sand dunes has intrigued explorers, tourists, and scientists. When an avalanche occurs or even when the sand is pushed ...
Dec 15, 2009 |
4.5 / 5 (22) |
7
Organic compounds found in proto-planetary disks
(PhysOrg.com) -- A new study from scientists in the US has reported that organic compounds could be formed in proto-planetary disks, and could have seeded the development of life in our own and other planetary ...
Mar 30, 2012 |
5 / 5 (7) |
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Space diamonds reveal supernova origins
Space diamonds may now be an astrophysicist's best friend.
Feb 15, 2012 |
4.8 / 5 (9) |
9
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How granular material becomes solid: Stress causes clogs in coffee and coal
It's easy to get in a jam. But it's much harder to explain exactly how or when it started.
Dec 14, 2011 |
5 / 5 (4) |
4
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Advanced electron microscope sheds light on metal embrittlement
Why does a solid metal that is engineered for ductility become brittle, often suddenly and with dramatic consequences, in the presence of certain liquid metal impurities?
Sep 22, 2011 |
3 / 5 (2) |
2
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Earth's oldest fossils boost hopes for life on Mars
(PhysOrg.com) -- Microfossils found in Australia show that more than 3.4 billion years ago, bacteria thrived on an Earth that had no oxygen, a finding that boosts hopes life has existed on Mars, a study published ...
Space & Earth / Earth Sciences
Aug 21, 2011 |
4.9 / 5 (17) |
11
Graphene: New electronics material closer to commercial reality
(PhysOrg.com) -- Researchers have developed a method for creating single-crystal arrays of a material called graphene, an advance that opens up the possibility of a replacement for silicon in high-performance ...
Nanotechnology / Nanomaterials
May 26, 2011 |
4.8 / 5 (8) |
7
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Frozen comet had a watery past, scientists find
For the first time, scientists have found convincing evidence for the presence of liquid water in a comet, shattering the current paradigm that comets never get warm enough to melt the ice that makes up the ...
Space & Earth / Space Exploration
Apr 05, 2011 |
5 / 5 (5) |
5
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Oxygen isotope analysis tells of the wandering life of a dust grain 4.5 billion years ago
Scientists have performed a micro-probe analysis of the core and outer layers of a pea-sized piece of a meteorite some 4.57 billion years old to reconstruct the history of its formation, providing the first ...
Mar 03, 2011 |
4 / 5 (6) |
13
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Why the sandfish lizard wriggles as it does (w/ Video)
(PhysOrg.com) -- The sandfish lizard (Scincus scincus) lives in the desert sands of North Africa and burrows through the sand by wriggling. Now scientists in the US have created a computer model that emulat ...
Feb 25, 2011 |
4.4 / 5 (7) |
0
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Brewery from 500 BC reveals its secrets
(PhysOrg.com) -- A scientist studying an ancient Celtic site believes he has worked out the recipe they used for making beer around the year 500 BC.
Other Sciences / Archaeology & Fossils
Jan 17, 2011 |
4.8 / 5 (11) |
7
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Graphene's strength lies in its defects
The website of the Nobel Prize shows a cat resting in a graphene hammock. Although fictitious, the image captures the excitement around graphene, which, at one atom thick, is the among the thinnest and strongest ...
Nanotechnology / Nanomaterials
Nov 11, 2010 |
4.7 / 5 (14) |
0
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Early sunflower family fossil found in South America
(PhysOrg.com) -- A beautifully preserved fossil identified as being of an early relative of the Asteraceae, or aster, family nearly 50 million years old suggests the plant family, which has now colonized much ...
Other Sciences / Archaeology & Fossils
Sep 28, 2010 |
5 / 5 (7) |
2
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Physicists explain why superconductors fail to produce super currents
When high-temperature superconductors were first announced in the late 1980s, it was thought that they would lead to ultra-efficient magnetic trains and other paradigm-shifting technologies.
Jun 27, 2010 |
4.7 / 5 (35) |
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