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With the development of electric lights and power systems, electric lighting has effectively replaced firelight. Light is 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 metres to radio waves measured in metres. The meaning of light is something that makes vision possible How to use light in a sentence In order to see, there must be light
Light shines on an object, then bounces off, or reflects, back to our eyes Our eyes are sensitive to a certain kind of light called visible light Visible light is all the colors (red, yellow, blue, etc.) that we can see But there are many other kinds… 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.
In most situations, light behaves like a wave with properties like wavelength and frequency, and is subject to diffraction and interference In some situations, light can be considered to behave like a particle called a photon This particle has no mass, but carries a fixed amount of energy. Is light a wave or a particle And why can’t humans see the whole spectrum of light In this international year of light, it is particularly appropriate to review the historical concept of what is light and the controversies surrounding the extent of the visible spectrum
Today we recognize that light possesses both a wave and. Light is both a particle and a wave Light has properties of both a particle and an electromagnetic wave but not all the properties of either It consists of photons that travel in a wave like pattern. Light is a type of energy that enables us to see with our eyes Light travels from a source, like the sun or a light bulb, to our eyes, and to the surroundings
