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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 ...

    5 days ago · 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. The Nature of LightThe Physics Hypertextbook

    Light is a transverse, electromagnetic wave that can be seen by the typical human. The wave nature of light was first illustrated through experiments on diffraction and interference.

  5. 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 …

  6. Light - definition of light by The Free Dictionary

    Define light. light synonyms, light pronunciation, light translation, English dictionary definition of light. n. 1. Physics a. Electromagnetic radiation that is visible, perceivable by the normal …

  7. 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 …

  8. What is Light? - Las Cumbres Observatory

    Light is just one form of electromagnetic radiation, or electromagnetic waves. These waves are all around us and come in many sizes. The largest electromagnetic waves, with wavelengths …

  9. LIGHT definition in American English | Collins English Dictionary

    If a room or building is light, it has a lot of natural light in it, for example, because it has large windows. It is a light room with tall windows.

  10. 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 …