Just spotted this on the BBC news website.
http://news.bbc.co.uk/1/hi/sci/tech/6331897.stm
I have mentioned this before but the story of Radar is fascinating - especially the book Radar Days.
Many people don't realise just how much Radar changed the war and our lives.
"In fact, it was so important a development that the official historian of the Office of Scientific Research and Development, James Phinney Baxter III, wrote: "When the members of the Tizard Mission brought the cavity magnetron to America in 1940, they carried the most valuable cargo ever brought to our shores."
