The Search for Christian Doppler

It is now 150 years ago, on 25th May 1842, that the son of a Salzburg ston­ emason presented a scientific work "On the coloured light of the double stars and certain other heavenly bodies" at a meeting of the Royal Bo­ hemian Society of Sciences held in Prague. Christian Andreas Doppler, then professor at the Prague Technical Institute, set a milestone in scien­ tific history in the meeting room of the Royal Society in the Charles University, just a few meters from the National Theatre wher...