| These are transmitters that use radio waves to communicate with mobile phone handsets. |
| It works like Morse code, which is a way to transmit the alphabet over radio waves using dots and dashes. |
| Lidar is a remote sensing technique that uses laser light in much the same way that sonar uses sound or radar uses radio waves. |
| Traditional radar detectors use radio waves to detect when a radar gun is in use. |
| We know that radio waves and waves of all kinds of frequencies are constantly going through our bodies. |
| Light according to Maxwell is an electromagnetic wave, no different in essence to radio waves or the microwaves that heat up our ready meals. |
