LONDON, ENGLAND - NOVEMBER 04:  Secretary of State for Culture, Media and Sport, Ben Bradshaw speaks before a photocall at the Science Museum on November 4, 2009 in London, England. The Science Museum is celebrating a century of science with a public poll that has voted the X Ray machine as the most important invention of the last 100 years. Getty Images logo Getty Images 3 weeks ago

LONDON, ENGLAND - NOVEMBER 04: Secretary of State for Culture, Media and Sport, Ben Bradshaw speaks before a photocall at the Science Museum on November 4, 2009 in London, England. The Science Museum is celebrating a century of science with a public poll that has voted the X Ray machine as the most important invention of the last 100 years.