Historically, another important source of light for humans has been fire, from ancient campfires to modern kerosene lamps Is light a wave or a particle 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 But what exactly is light The brightness that comes from the sun, fire, etc
And from electrical devices, and that allows… The study of light and its interaction with matter is termed optics The observation and study of optical phenomena such as rainbows and the aurora borealis offer many clues about the nature of light as well as much enjoyment. 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. 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…
