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...Leonardo da Vinci just became even more prolific. An analysis released in the U.K.-based Antiques Trade Gazette claims a small portrait once attributed to a 19th century German artist was actually painted by the Italian master around the year 1500. The surprising revelation is but the latest in a series of cases in which "lost" pieces of artwork were rediscovered through art authentication. But how can experts - who have previously certified works by Caravaggio, Raphael, Van Gogh and countless others - be so sure that a specific painter is responsible for a work...
...case of the da Vinci painting, the authentication was based on physical evidence. Using a high-resolution multispectral camera capable of analyzing the painting on a precise level without touching it, a Canadian forensic-art expert named Peter Paul Biro was able to identify a faint fingerprint left on the canvas. The print was then matched to one on a known da Vinci painting hanging in Vatican City. Carbon dating of the newer canvas matched the painting to da Vinci's period, and an analysis of the style concluded the painter was left-handed, another purported da Vinci trait. Taken...
When scientists were running currents through the device’s magnets in 2008, soon after its completion, a breakdown known as a “quench” occurred that caused overheating, said Joao Guimaraes da Costa, an assistant professor of physics and a member of the Harvard ATLAS team...
This failure allowed helium gas to leak into the vacuum and explode, moving the magnets and destroying a large area of the experiment, added da Costa...
...Brazil's time," President Luiz Inácio Lula da Silva insisted in his pitch before Friday's International Olympic Committee vote. "It is time to light the Olympic torch in a tropical country." The IOC agreed - and that lit up a frenzied carnival in Rio de Janeiro, a city that knows how to party perhaps better than any other. As the decision was announced, the world forgot Rio's problems for a moment, especially its frightening murder rate, and watched tens of thousands of its residents, known as Cariocas, exult on Copacabana Beach, dancing to deafening music in tanga...