| A | B |
|---|
| carrier wave | radio waves broadcast by a radio or TV station at an assigned frequency that contains information used to produce pictures and sound |
| electromagnetic spectrum | range of electromagnetic waves, including radio waves, visible light, and X-rays with different frequencies and wavelengths |
| electromagnetic wave | waves that can travel through matter or space |
| gamma ray | highest-energy electromagnetic waves with the shortest wavelengths and highest frequencies |
| global positioning system | uses satellites, ground-based stations, and portable units with receivers to locate objects on Earth |
| infrared wave | electromagnetic waves with wavelengths between 1 mm and 0.7 millionths of a meter; sensed as heat |
| radiant energy | energy carried by electromagnetic waves |
| radio wave | lowest-frequency electromagnetic waves that have wavelengths greater than about 0.3 m and are used in most forms of telecommunications technology – such as TVs, telephones, and radios |
| ultraviolet radiation | electromagnetic waves with wavelengths between 0.4 millionths of a meter and 10 billionths of a meter; has frequencies and wavelengths between visible light and x-rays |
| visible light | electromagnetic waves with wavelengths between 0.4 and 0.7 millionths of a meter that can seen with your eyes |
| x-ray | high-energy electromagnetic wave that is highly penetrating and can be used for medical diagnosis |
