The wind-up radio

　　When you switch your TV on tonight，think about all those people without electricity.Thinking about this，Trevor Baylis came up with the idea of designing a radio that could be powered by hand.In common with Joshua Silver he wanted his invention to be cheap and easy to use.He wanted even the poorest people in

　　developing

　　countries，who don’t have electricity and cannot afford batteries，to use it. The radio has a generator (发电机) which is powered by turning a handle.In 1996 it won the BBC Design Award for Best Product and Best Design.

　　The Dyson vacuum ( 真空) cleaner

　　In many homes around the world you can see a cleaner that looks like a spaceship.This is the Dyson vacuum cleaner which uses something called ”cyclonic separation“ to separate the dirt.You do not need a bag for your cleaner and it does not get blocked so it is very practical.The idea came to Sir James Dyson after he kept having problems with his vacuum cleaner.He decided he could design a better one and in 1993 he opened his own factory.The Dyson is now one of the best-selling cleaners in the UK and Dyson is believed to have earned over a billion pounds.

　　The Zapata Flyboard

　　Have you ever dreamed of zooming through the water and leaping in the air like a dolphin？Now you can thanks to a flyboard，built by water sports enthusiast Frank Zapata.With it you can dive back in the water and out again.It’s possible to jump to incredible heights out of the water—over 30 feet.The basic flyboard model comes in at ￡4,200.

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