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Wave technology
| Research | finding out something |
| Explain | tell how or why something happens |
| Encode | to change |
| Transmit | to send something from one place to another |
| Telegraph | machines that send messages |
| Sound energy | energy you can hear |
| Digital signals | send using numbers |
| Converts | changes something |
| Receiving station | place or device that gets a messages |
| Digitized | changed into numbers |