👉 Light particles, or photons, are fundamental entities that make up light and other forms of electromagnetic radiation. These particles are incredibly small and massless, traveling at the speed of light in a vacuum, which is approximately 299,792 kilometers per second. Despite their minuscule size, photons carry energy and momentum, which are crucial for various physical phenomena, including the photoelectric effect, where light can eject electrons from materials. Photons exist as discrete packets of energy, meaning they come in specific amounts corresponding to their frequency or wavelength, as described by Planck's equation. This particle-like behavior of light contrasts with its wave-like properties, such as interference and diffraction, highlighting the dual nature of light that is central to quantum mechanics.
