Energy quantization

Energy quantization refers to the idea that energy exists in discrete units, rather than a continuous range. In simple terms, it means that certain systems, like atoms and molecules, can only possess specific, fixed amounts of energy. For example, electrons in an atom occupy defined energy levels; they can jump between these levels by absorbing or emitting exact amounts of energy. This concept is fundamental in quantum mechanics and helps explain phenomena like the colors of light emitted by gases, as well as the stability of atoms and the behavior of materials at the atomic scale.