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1814: Spectral Analysis |
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In a dark room, a ray of sunlight forms a prism on the laboratory table. The fan-shaped white ray is split into the colours of the rainbow. Yet, the coloured fan cannot be seen with the naked eye. |
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| 10.3.2010 Tourism in Germany fares well despite crisis |
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| As the world's biggest travel trade fair, the ITB, opened its doors in Berlin, Germany was upbeat. The country's tourism industry managed to sail through the financial crisis in 2009 relatively unscathed. |
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