Energy quanta are the smallest units of energy that can be transferred or exchanged in physical processes. They are the building blocks of quantum physics, which describes the behavior of matter and energy at the subatomic level. Energy quanta are also known as quanta, quantum, or energy packets.Quantum physics emerged in the early 20th century as a new branch of physics that challenged the classical physics of Newton and Maxwell. Classical physics could not explain some phenomena, such as the e