Historically, another important source of light for humans has been fire, from ancient campfires to modern kerosene lamps Its carrier particle is the photon 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 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. 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 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. When light hits a transparent object, it passes through it almost completely without making a significant shadow Light is a form of electromagnetic radiation that shows properties of both waves and particles.
