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The main source of natural light on earth is the sun

Historically, another important source of light for humans has been fire, from ancient campfires to modern kerosene lamps With the development of electric lights and power systems, electric lighting has effectively replaced firelight. The meaning of light is something that makes vision possible How to use light in a sentence 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.

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 That is the reason we can see objects during daytime with the sunlight, or with a light bulb in the night. But what exactly is light 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. Light makes up a part of both the electromagnetic spectrum and radiation given by stars, like the sun The light that comes from the sun reaches the earth and makes it bright Rainbows are a type of light and stars are a type of light to The study of light is known as optics When light hits an opaque object, it makes a.

In his formulation of electromagnetism, maxwell described light as a propagating wave of electric and magnetic fields

More generally, he predicted the existence of electromagnetic radiation Coupled electric and magnetic fields traveling as waves at a speed equal to the known speed of light.