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Showing posts with label solar. Show all posts
Showing posts with label solar. Show all posts

Wednesday, September 29, 2010

PlanetSolar

World's biggest solar powered boat sets sail. This sleek catamaran-styled yacht, named the PlanetSolar, measures 102 feet long, almost 50 feet wide and 24-1/2 feet high (31 meters by 15 meters by 7.5 meters), but its most interesting feature is that it’s covered with 5,382 sq ft (500 sq m) of solar panels that gather sunlight and help it sail the sea nice and smooth.
Built by Knierim Yachtbau and designed by PlanetSolar SA of Switzerland, the world’s largest solar boat has a futuristic shape that gets the eye. The vessel has been unveiled for the first time during a press event held at the HDW shipyard in Kiel.

Tuesday, June 22, 2010

Solar Music

The sun has been the inspiration for hundreds of songs, but now scientists have discovered that the star at the center of our solar system produces its own music.
Astronomers at the University of Sheffield have managed to record for the first time the eerie musical harmonies produced by the magnetic field in the outer atmosphere of the sun.
They found that huge magnetic loops that have been observed coiling away from the outer layer of the sun's atmosphere, known as coronal loops, vibrate like strings on a musical instrument.
Using satellite images of these loops, which can be over 60,000 miles long, the scientists were able to recreate the sound by turning the visible vibrations into noises and speeding up the frequency so it is audible to the human ear.
Professor Robertus von Fay-Siebenburgen, head of the solar physics research group at Sheffield University, said: "It was strangely beautiful and exciting to hear these noises for the first time from such a large and powerful source... It is a sort of music as it has harmonics." "It is providing us with a new way of learning about the sun and giving us a new insight into the physics that goes on at in the sun's outer layers where temperatures reach millions of degrees," he added. The coronal loops are thought to be involved in the production of solar flares that fling highly charged particles out into space, creating a phenomenon known as space weather.

Thursday, April 08, 2010

Solar globetrotter

The Solar Impulse aircraft, a pioneering Swiss bid to fly around the world on solar energy, took off on its first test flight from an air base in western Switzerland on Wednesday. Tensions were running high in the team as the high tech prototype lifted into blue skies at a speed of just 45 km per hour after a one km run down the runway at Payerne air base shortly before 10.30 am. Propelled by four 10 horsepower electric motors, the gangling single-seater aircraft and test pilot Markus Scherdel slowly gained altitude for a scheduled flight of around two hours at an altitude of 1,000 meters. The prototype has a wingspan comparable to that of an Airbus A340 airliner, but weighs as little as a car at only 1,600 kg.

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