From MSNBC More HereAn unusual photograph of two see-through goby fish, each no bigger than an inch, is this year's overall winner in the 2011 Annual Underwater Photography Contest, hosted by the University of Miami's Rosenstiel School of Marine and Atmospheric Science. German photographer Tobias Friedrich captured the view during a dive near Marsa Alam in Egypt. More than 600 pictures were entered in the contest, from photographers representing 20 countries
Showing posts with label MSNBC. Show all posts
Showing posts with label MSNBC. Show all posts
Saturday, April 23, 2011
The wonders of the underwater world
Friday, April 23, 2010
Why the ash from the eruption of Eyjafjallajoekull volcano is dangerous?
The mushrooming cloud of ash from the eruption of the Eyjafjallajoekull volcano in Iceland had resulted in the closure of major airports throughout the U.K. and Scandinavia.
Remy Melina writes in MSNBC:
The grounded flights make sense, as these super-heated plumes can do more than reduce visibility. They're downright hazards for airplanes.
"Basically, planes and volcanic ash don't mix," Elizabeth Cory, a spokesperson for the Federal Aviation Administration, said today. "When ash is ingested into the engine, it creates problems for the plane, including electrical failure."
The thing that makes volcanic plumes so dangerous is that they look extremely similar to regular clouds, visibly and on radar screens. Even when ash isn't visible to the human eye, it can still pose a threat to aircrafts because of the chemicals floating within volcanic plumes.
Airborne ash makes air travel extremely dangerous and difficult for several reasons, the number one being that when the air that gets sucked through an aircraft's jet engine is mixed with ash, it can cause engine failure.
The ash particles that make up volcanic clouds contain powder-size to sand-size particles of igneous rock material that have been blown into the air by an erupting volcano. The tiny particles instantly melt when faced with the internal temperature of an in-flight jet engine, which exceeds 1,832 degrees Fahrenheit (1,000 degrees Celsius).
To read more click here.
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