Bio-Mimetics -Bat SONAR system was inspired from bats. Bats use Echolocation to move and hunt it's prey by emitting a sound about the frequency of 9-200kHz humans have the range about 20-20kHz sometimes bats crips are able to listen by human. A boy designed a new SONAR based walking stick for blind people this Sonar stick are able to find out object near the stick to detect any presents
Creative and revealing the facts