Light

Electromagnetic Spectrum

Definition

The electromagnetic spectrum refers to the range of all possible frequencies (or wavelengths) of electromagnetic radiation. It includes various types of waves, such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Analogy

Imagine a buffet with different food stations representing different types of electromagnetic waves. Each station offers a specific range of dishes (wavelengths/frequencies). Just like you can choose from a variety of foods at the buffet, the electromagnetic spectrum offers a wide range of wavelengths to explore.

Related terms

Frequency: Frequency refers to the number of complete cycles or oscillations that occur in one second for an electromagnetic wave. It is measured in Hertz (Hz).

Wavelength: Wavelength is the distance between two consecutive points on an electromagnetic wave that are in phase with each other. It is usually represented by the Greek letter lambda (λ) and is measured in meters.

Visible Light: Visible light is a narrow range within the electromagnetic spectrum that humans can perceive with their eyes. It consists of different colors ranging from red to violet.