James Dyson's son Jake invents £399 lamp that lasts 37 years

James Dyson's son Jake invents £399 lamp that lasts 37 years | Daily Mail Online: "It is often asked how many men it takes to change a light bulb and in this case, it’s just one. The son of British inventor Sir James Dyson has created an innovative light that he claims will last, and stay bright, for almost four decades."