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'Twisted' waves could boost capacity of wi-fi and TV

http://www.bbc.co.uk/news/science-environment-17221490

By Jason Palmer
Science and technology reporter, BBC News

A striking demonstration of a means to boost the information-carrying capacity of radio waves has taken place across the lagoon in Venice, Italy.

The technique exploits what is called the "orbital angular momentum" of the waves - imparting them with a "twist".




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