
July 14, 2010
Cabeças duras? Crazy Guys?
July 8, 2010
June 24, 2010
Ondas Solares Produzem Música Pura
ScienceDaily (June 22, 2010) — Musical sounds created by longitudinal vibrations within the Sun’s atmosphere, have been recorded and accurately studied for the first time by experts at the University of Sheffield, shedding light on the Sun’s magnetic atmosphere.
Scientists Discover Heavenly Solar Music
Using state-of-the-art mathematical theory combined with satellite observations, a team of solar physicists from the University have captured the music on tape and revealed the harmonious sounds are caused by the movement of giant magnetic loops in the solar corona — the outermost, mysterious, and least understood layer of the Sun’s atmosphere. Most importantly, the team studied how this sound is decaying, giving an unprecedented insight into the physics of the solar corona.
Bola Maluca essa “jabulani”
A Teamgeist, no lugar dos hexágonos costurados, tinha 8 painéis fundidos por um processo térmico. A Jabulani tem 14 painéis – e ganhou sulcos aerodinâmicos.
Segundo a Nasa, quando a Jabulani se desloca em velocidade elevada, o ar próximo à superfície vira um fluxo assimétrico. Forças laterais podem resultar em “desvios e mergulhos voláteis”. A bola tende a assumir o comportamento imprevisível quando passa da barreira dos 73 a 80 km/h, detalhou o engenheiro aeroespacial Rabi Mehta, do Centro de Pesquisa Ames da Nasa, na Califórnia.
O golerão tava certo…
June 23, 2010
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