Robert Watson-Watt image: International Churchill Society Watson-Watt demonstrated the first practical radio system for detecting aircraft to a British Air Ministry (AM) committee. The Air Ministry ...

Their answer: The death ray. The British military put their best and brightest on the case, including Robert Watson-Watt, a Scottish physicist. The government had had the idea for some time.

The British military put their best and brightest on the case, including Robert Watson-Watt, a Scottish physicist. The government had had the idea for some time.