👉 Light particles, colloquially referred to as photons or light itself, are fundamental entities that exhibit both wave-like and particle-like properties, a concept central to quantum mechanics. These particles of light are the quanta of electromagnetic radiation, meaning they carry discrete packets of energy proportional to their frequency, as described by Planck's relation (E = hν). In this context, "light particles" or "light photons" can be thought of as tiny bursts of energy that travel through space at a constant speed, approximately 299,792 kilometers per second in a vacuum. When we speak of "light particles in a greeting," it metaphorically conveys the idea of these particles interacting or communicating with one another or with matter. This interaction can manifest in various phenomena, such as reflection, refraction, absorption, or emission, where light particles exchange energy and momentum. For instance, when sunlight (composed of numerous photons) hits a leaf, some photons are absorbed, exciting electrons within the leaf's molecules, while others are reflected, causing the leaf to appear bright. In a more abstract sense, when we greet someone with light particles—whether through words, smiles, or gestures—we're essentially sending out these energy packets to convey warmth, positivity, and connection, symbolizing the fundamental role of light in human communication and the universe's interconnectedness.