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Light particles, also known as photons, are fundamental entities that make up electromagnetic radiation, including sunlight, moonlight, and even the light we see. These particles are incredibly small, far smaller than any atom or molecule, and they travel at the speed of light in a vacuum, approximately 299,792 kilometers per second. Unlike matter particles, light particles do not have mass or charge in free space; however, when they interact with matter, they can transfer energy and momentum. This property makes them crucial for various phenomena, from photosynthesis to the functioning of optical devices like cameras and lasers. Light particles are also responsible for the colors we perceive, as different wavelengths correspond to different colors, and their behavior under various conditions (such as refraction or diffraction) forms the basis of many scientific studies in physics and optics.
key:light_particles