And the key to being small was to use short radio waves.

They've certainly no idea of using sound waves in air for communication.

They use very short waves that reflect from earth and stone.

Instead of sending data across phone lines, the computers use radio waves.

Radar makes use of the same techniques using radio waves.

Overall impression is the main focus for judges with weight given to performance on or using waves.

Using radio waves, miners could remain in contact with surface operations.

Radar is a system using radio waves to detect objects.

Seth can reduce people and objects to dust using sound waves.

Most bugs transmit information, whether data, video, or voice, through the air by using radio waves.