Sign up for FlowVella
Sign up with FacebookAlready have an account? Sign in now
By registering you are agreeing to our
Terms of Service
Loading Flow
Downloading Image /
Downloading Image /
Downloading Image /
Downloading Image /
Downloading Image /
Who invented sonar
Paul Langevin, a French physicist, invented the first sonar used to detect submarines in 1915 using echolocation, like bats. It was used during WWII to detect submarines.
#1
Downloading Image /
Downloading Image /
Downloading Image /
Downloading Image /
Downloading Image /
Downloading Image /
FlowVella, Previously Known As Flowboard
© 2025 FlowVella
FlowVella
