Historically, another important source of light for humans has been fire, from ancient campfires to modern kerosene lamps Simply stated, light is nature's way of transferring energy through space With the development of electric lights and power systems, electric lighting has effectively replaced firelight.
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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 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… Is light a wave or a particle And why can’t humans see the whole spectrum of light
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.
