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Latest Coal Stories

Scientists: Coal Is Better, Cheaper For Making Graphene Quantum Dots
2013-12-06 16:55:31

Brett Smith for redOrbit.com – Your Universe Online A team of scientists from Rice University has found a way to use coal as a source of graphene quantum dots (GQD), tiny fluorescent particles that could be used in medical imaging and photovoltaic applications – according to a new report in Nature Communications. The use of coal to make GQDs would be much cheaper than conventional means, which are expensive and only produce small quantities. “We wanted to see what’s there in...


Latest Coal Reference Libraries

28_b6d8369d3cd22b9f7d915b14278a4ed3
2005-05-26 11:24:59

Coal is a fossil fuel extracted from the ground either by underground mining, open-pit mining or strip mining. It is a readily combustible black or brownish-black sedimentary rock. It is composed primarily of carbon and hydrocarbons, along with assorted other elements, including sulfur. Often associated with the Industrial Revolution, coal remains an enormously important fuel and is the most common source of electricity world-wide. In the United States, for example, the burning of coal...

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Word of the Day
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
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