I have been studying videos of swimmers and find what was once called the "S" stroke has almost disappeard.
I have noticed that flyers use it. But crawl swimmers have modified it so much that it is almost gone.
Has it been replaced completely or was it an optical illusion? Did underwater film show us it did not exist.
It is a myth that the Shkval travels faster than the speed of sound. It exceeds 200 mph, but gets nowhere near 700 mph. The Popular Science article only says that the US Navy has tested a prototype, but it never says that prototype approached the speed of sound. Geochuck, the military.com article you linked to dispels the myth that this weapon approaches the speed of sound!
It is a myth that the Shkval travels faster than the speed of sound. It exceeds 200 mph, but gets nowhere near 700 mph. The Popular Science article only says that the US Navy has tested a prototype, but it never says that prototype approached the speed of sound. Geochuck, the military.com article you linked to dispels the myth that this weapon approaches the speed of sound!
