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The primary colours of light are red, green and blue. The secondary colours of light are cyan, magenta and yellow. Cyan is made by combining blue and green. Magenta is made by combining blue and red. Yellow is made by combining green and red. Computer screens and TV screens use these colours of light to make all of the colours that you see.
light, electromagnetic radiation that can be detected by the human eye. Electromagnetic radiation occurs over an extremely wide range of wavelengths, from gamma rays with wavelengths less than about 1 × 10 −11 metre to radio waves measured in metres.
Light has the property of waves and particles. All the important properties of light like refraction, reflection, dispersion, etc. are explained in this page.
The primary properties of light are intensity, propagation direction, frequency or wavelength spectrum, and polarization. Its speed in vacuum, 299 792 458 m/s, is one of the fundamental constants of nature. [6] .
light, That portion of the electromagnetic spectrum visible to the human eye. It ranges from the red end to the violet end of the spectrum, with wavelengths from 700 to 400 nanometres and frequencies from 4.3 × 10 14 to 7.5 × 10 14 Hz.
In this chapter, we study the basic properties of light. In the next few chapters, we investigate the behavior of light when it interacts with optical devices such as mirrors, lenses, and apertures.
Light is a transverse, electromagnetic wave that can be seen by the typical human. The wave nature of light was first illustrated through experiments on diffraction and interference. Like all electromagnetic waves, light can travel through a vacuum. The transverse nature of light can be demonstrated through polarization.
Does light travel as a wave, a ray or a stream of particles? Is it a single color or many colors mixed together? Does it have a frequency like sound? And what are some of the common properties of light, such as absorption, reflection, refraction and diffraction? You might think scientists know all the answers, but light continues to surprise them.
Light has properties of both waves and particles; it can be described as both an electromagnetic wave and as a photon, the carrier particle of the electromagnetic force. Light is electromagnetic so it consists of oscillating electric and magnetic fields. The visible part of the spectrum has a wavelength range of 3.7 × 10−7 —7.4 ×10−7m.
Summary. Light is a transverse, electromagnetic wave that can be seen by the typical human. The wave nature of light was first illustrated through experiments on diffraction and interference. Like all electromagnetic waves, light can travel through a vacuum. The transverse nature of light can be demonstrated through polarization.