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Communication, radar, medical imaging
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- Electromagnetic waves can propagate through a vacuum and various materials, such as air, water, and solids. This allows for their use in communication, radar, medical imaging, and many other applications.
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Aug 10, 2016 · What is Electromagnetic energy? Electromagnetic energy travels in waves and spans a broad spectrum from very long radio waves to very short gamma rays. The human eye can only detect only a small portion of this spectrum called visible light.
Aug 10, 2016 · Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.
- Radio waves. Radio waves have the longest wavelengths and the least energy of all electromagnetic waves. There are different types of radio waves. Different types of radio waves have different penetrating abilities and have different uses.
- Microwaves & Millimeter waves. Today, due to the advancement in technology, generating electromagnetic waves of much shorter wavelengths has become easier.
- Infrared waves. Infrared rays are heat waves given off by most objects. They have wavelengths ranging from 1 mm to 700 nm. Infrared waves cannot penetrate walls.
- Visible light. Visible light is the range of frequencies that are visible to our naked eyes. You can read more about visible light and its properties in our blog post here: The visible spectrum.
Feb 21, 2024 · The electromagnetic spectrum has many practical applications, from communication and medical imaging to cooking food in a microwave oven. Understanding the properties of different types of electromagnetic waves allows scientists and engineers to develop new technologies and improve existing ones.
- Chitra Sharma
- Radio and Television. Radio Waves are typically used for the purpose of signal broadcasting via various signal modulation techniques such as frequency modulation, amplitude modulation, etc.
- Microwave Ovens. As the name signifies, microwave ovens make use of high energy possessed by the microwaves to cook or heat the food. The frequency range of microwaves lies between 1 GHz to 1000 GHz.
- Medical Examination. A number of electromagnetic waves are used for medical diagnosis purpose. For instance, X-Rays are used to get an image of tissues and bones, thereby allowing the medical examiner to locate broken bones or injured body tissues.
- Sterilization. The electromagnetic rays lying in the wavelength range of 80 nanometers to about 10 nanometers are known as UV rays or ultraviolet rays.
This unique NASA resource on the web, in print, and with companion videos introduces electromagnetic waves, their behaviors, and how scientists visualize these data. Each region of the electromagnetic spectrum (EMS) is described and illustrated with engaging examples of NASA science.
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The electromagnetic spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength. The spectrum is divided into separate bands, with different names for the electromagnetic waves within each band.
