Uses of Electromagnetic Radiations
Uses of Electromagnetic Radiations
Radio Waves
- Radio waves are used for communication purposes.
- They are employed in television signals, transmission of mobile phone signals and for radio broadcasting.
- Satellite communication makes use of relatively short-wavelength radio waves.
Microwaves
- Microwaves are used for cooking because their energy is absorbed by water and fat molecules, which increases their temperature.
- They are also utilised in Radar technology, used in things such as speed guns used by police and Air Traffic Control to track aircrafts.
- Microwave technology is used for point-to-point communication links, and satellite transmissions.
Infrared Radiation
- In the medical field, infrared radiation is used for treating muscle strain and injuries because it generates heat.
- It is employed in electrical heaters and cookers for heating purposes.
- Infrared sensors are used in night vision equipment and remote controls.
- It also has applications in thermal imaging cameras used by firefighters and in detecting heat leaks in houses.
Visible Light
- Visible light has a wide range of uses, including allowing us to see!
- It is used in photography to produce images.
- Laser, which is a concentrated beam of light, has various applications including surgery, cutting and welding.
Ultraviolet Radiation
- Ultraviolet Radiation (UV) is used in fluorescent lights.
- UV light can be used for sterilizing water and tools, especially in hospitals.
- It causes the skin to produce vitamin D, which is beneficial for health.
- It is also used in sun tanning and in forensic science to identify substances invisible to the naked eye.
X-rays
- X-rays are widely used in medicine for inspecting broken bones and detecting some diseases.
- They are used in scanning luggage at airports for security purposes.
- X-rays are used in industrial radiography to examine welding seams and to detect cracks.
Gamma Rays
- Gamma rays are used in medicine for sterilizing equipment and for radiation therapy to kill cancer cells.
- They are used in food irradiation to kill bacteria and other pathogens.
- Gamma rays are used in nuclear power plants and in nuclear bombs.
The various uses of electromagnetic waves are determined by their unique properties such as frequency and wavelength. It is important to remember that each type of wave also comes with its own risks and safety precautions in order to prevent damage to living tissues.