I hate to quibble with a comment but I had to offer some follow up to the comment regarding the disbelief of a German secret weapon during World War I. The concept for a wave type weapon has its origins before World War I with Nicola Tesla, who first postulated the notion of what has become known as scalar waves. Modern physics denies that such waves can exist but Tesla was convinced that they did and according to some he provided it (Tesla Horwitzer). The British actually developed the first theoretic underpinnings for a sound weapon of the type depicted in Biggles and frankly I thought that is where the idea came from. We "moderns" think far to much of our capabilities. What is happening today is that some open minded scientists are revisiting discarded Victorian science. How many people know that the modern principles of William Clerk Maxwell's electromagnetic principles are taught today in a truncated form and that the missing parts may in fact provide the theory for effective wave weapons (ever wonder why the US government spends so much time on Star Wars technology?). By the 1930s, the Germans were developing a number of secret weapons including the so called death rays. I think it prudent to give early modern humans credit for being just as creative as our generation and a lot more open minded.
Review of Biggles: Adventures in Time
