LONDON, ENGLAND - JUNE 02:  Felicity Henderson from The Royal Society arranges Otheoscopes and Radiometers from 1875 which form part of  'The Royal Society:350 Years of Science' exhibition on June 2, 2010 in London, England. The exhibition at The Royal Society's headquarters forms part of The Society's 350th anniversary year celebrations and displays material from the Society's foundation in 1660 to the present day.  (Photo by Peter Macdiarmid/Getty Images)