‘Twisted’ waves could boost capacity of wi-fi and TV

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”.Varying this twist permits many data streams to fit in the frequency spread currently used for just one.To read this BBC News report in full, see:
www.bbc.co.uk/news/science-environment-17221490