👉 The term "fermions" is often used in quantum mechanics to refer to particles that are not charged or have a fixed mass. In this context, fermions are thought of as being like electrons and protons - they do not carry any electric charge but can exist with opposite charges on either side of their nucleus (the electron's "shell"). This concept is important because it allows for the existence of particles that cannot be described by classical physics, such as photons or antiparticles.
