Artist Ryoji Ikeda has unveiled a new public installation in London, titled Spectra, and consisting of a massive column of light shooting up into the night sky next to the Parliament building.  The installation is part of a series of works commemorating the beginning of World War I in Britain.  “The light spectra throws up into the night sky is a unifying point,” says mayor Boris Johnson. “It echoes how the first world war affected all Londoners, but also how they and the rest of the country came together, standing united during those dark days.”
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