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Light - Wikipedia
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.

Light | Definition, Properties, Physics, Characteristics, Types ...
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 Definition & Meaning - Merriam-Webster
The meaning of LIGHT is something that makes vision possible. How to use light in a sentence. Synonym Discussion of Light.

Light - Learn Physics
What is Light? Light in Physics 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.

Light – The Wonders of Physics – UW–Madison
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…

How Light Works - HowStuffWorks
But what exactly is light? We catch glimpses of its nature when a sunbeam angles through a dust-filled room, when a rainbow appears after a storm or when a drinking straw in a glass of water looks disjointed.

Light - Simple English Wikipedia, the free encyclopedia
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.

Custom Light Fabrication | LightArt Handmade Fixtures
Custom light fabrication accents architecture and sets a mood. Visit LightArt to see how handcrafted lighting elevates standard fixtures to an art form.

What is Light? - Las Cumbres Observatory
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.

What is light? - BBC Sky at Night Magazine
What is light, what are the different types of light and how does light behave? A history of discoveries has led us to see more clearly.

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