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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 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.

  4. 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 …

  5. LIGHT | English meaning - Cambridge Dictionary

    LIGHT definition: 1. the brightness that comes from the sun, fire, etc. and from electrical devices, and that allows…. Learn more.

  6. 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 …

  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. 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 …

  9. Light - Simple English Wikipedia, the free encyclopedia

    Light makes up a part of both the electromagnetic spectrum and radiation given by stars, like the sun. The light that comes from the sun reaches the Earth and makes it bright. This is called …

  10. Light and its properties | Britannica

    In the mid-19th century, light was described by James Clerk Maxwell in terms of electromagnetic waves, but 20th-century physicists showed that it exhibits properties of particles as well; its …