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  1. Optics - Wikipedia

  2. Light: Science & Applications - Nature

  3. Light - Wikipedia

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

  5. Optics | History, Applications, & Facts | Britannica

  6. 1: The Nature of Light - Physics LibreTexts

  7. The Nature of LightThe Physics Hypertextbook

  8. Optics - Physics LibreTexts

  9. Optical physics - Latest research and news - Nature