oscillating electric and magnetic fields traveling together through space at a speed of nearly 186,000 mi/300,000 km per second. The (limitless) range of possible wavelengths or frequencies or electromagnetic waves, which can be thought of as making up the electromagnetic spectrum, includes radio waves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays.
These waves are not sound, although people often use them to transmit sound information such as using radio waves. These all have the same speed, which is (The speed of light). Light, Microwaves and Infa-red are also part of the electromagnetic spectrum.
All matter absorbs and emmits radiation covering a broad band of frequencies and wavelengths. This electromagnetic radiation has the velocity of the speed of light (2.998 x 108 ms-1) and arises from the vibrating electric charges in atoms and bonds. The range of wavelengths, also known as the electromagnetic spectrum is shown below
Electromagnetic radiation which moves from the source through space in the form of electromagnetic waves. Where electric appliances are concerned, the limits of transmission of these emissions are defined by international standards.
Electromagnetic waves form a continuous spectrum of which visible light is only a small part. Gamma rays, X-rays, microwaves, and radio waves are also electromagnetic waves. They are also known as EM waves. Electromagnetic Waves
A wave propagated through space by simultaneous periodic variation in the electric and magnetic field intensity at right angles to each other and to the direction of propagation. The electromagnetic spectrum includes radio waves, microwaves, infrared, visible and ultraviolet radiation, X-rays, gamma rays and cosmic rays.
waves propagated through the simultaneous periodic intensity variation of an electric and magnetic fields. Electromagnetic waves propagate through free space without any medium. Electromagnetic waves include radio waves, microwaves, infrared light, visible light, ultraviolet light, x-rays and gamma rays.
A wave propagating as a periodic disturbance of the electric and magnetic fields and having a frequency in the electromagnetic spectrum; the means by which energy is transmitted from one place to another.