List the main types of electromagnetic waves in order of increasing frequency. Give at least one useful application for each type of wave.

There are seven main types of electromagnetic waves: 1. Radio waves 2. Microwaves 3. Infrared waves 4. Visible light 5. Ultraviolet waves 6. X-rays 7. Gamma rays These waves are listed in order of increasing frequency, from the lowest frequency (radio waves) to the highest frequency (gamma rays).

Now we will briefly discuss one application for each type of electromagnetic wave: 1. Radio waves are primarily used for communication, such as radio and television broadcasting, as well as wireless communication through mobile phones and Wi-Fi networks. 2. Microwaves are used for various applications such as in microwave oven for cooking/heating food, in radar systems for detection and ranging, as well as in satellite communication. 3. Infrared waves are used for remote control systems in electronic devices, such as TV remotes, night-vision systems, and also in thermal imaging to detect heat signatures. 4. Visible light is essential for sight and plays a crucial role in a wide range of applications, such as photography, illumination, and color detection. 5. Ultraviolet waves are used for sterilization and purification, such as in water treatment plants and air filtration systems, as well as in tanning lamps, and for detecting counterfeit currency. 6. X-rays are widely used in the medical field for diagnostic purposes, such as in imaging bones and teeth, and also in airport security scanners to examine the contents of luggage. 7. Gamma rays are used in cancer treatment, i.e., radiation therapy, to kill cancer cells, as well as in nuclear physics for studying atomic nuclei and in space exploration for observing distant astronomical objects. In conclusion, we listed the main types of electromagnetic waves in order of increasing frequency, and mentioned at least one useful application for each type of wave.