Sound is basically a form of wave., the ECE guys, and specifically people in for EM and related stuff LOOOVVEEEEEEEEE waves (those of you being extra picky
If you want to participate in India or most other countries of our earth with a motor vehicle on the road, you need only a valid driver's license an insurance
Once upon a time two poor merchants lived in a city. Their names were Nek-dil and Dusht-dil. They were friends. They decided to travel to distant lands