a particle of light
photon
A particle of light, also known as a photon, is a fundamental particle that carries electromagnetic energy. Photons have no mass and travel at the speed of light in a vacuum. They have both wave-like and particle-like properties, which is known as wave-particle duality.
Photons can interact with matter in different ways. When a photon interacts with matter, it can be absorbed, reflected or scattered. The amount of energy carried by a photon determines its wavelength, and thus, its color. This property of photons is used in various applications such as photography, fiber optics, and solar energy.
The study of photons has contributed to significant advancements in the field of quantum mechanics, as they play a crucial role in understanding the behavior of particles at the atomic and subatomic level. Additionally, photons are used in various scientific instruments such as telescopes, microscopes, and particle detectors, making them an essential component in scientific research.
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