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  1. 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 …

  2. Light | Definition, Properties, Physics, Characteristics, Types ...

    Sep 27, 2025 · Light is electromagnetic radiation that can be detected by the human eye. Electromagnetic radiation occurs over an extremely wide range of wavelengths, from gamma …

  3. Light - Learn Physics

    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 …

  4. 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.

  5. 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 …

  6. Light - New World Encyclopedia

    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 …

  7. 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 …

  8. The Basics of Light - Johns Hopkins University

    Simply stated, light is nature's way of transferring energy through space. We can complicate it by talking about interacting electric and magnetic fields, quantum mechanics, and all of that, but …

  9. What is Light? - An overview of the properties of light

    Light is our primary means of perceiving the world around us. Indeed, in a scientific context, the detection of light is a very powerful tool for probing the universe around us.

  10. Light - Electromagnetic, Wavelength, Spectrum | Britannica

    Sep 27, 2025 · In his formulation of electromagnetism, Maxwell described light as a propagating wave of electric and magnetic fields. More generally, he predicted the existence of …