In the quantum realm, the vacuum is never truly empty. According to the Heisenberg Uncertainty Principle, energy and time share a relationship that allows for brief "borrowings" of energy. This leads to the existence of —temporary changes in the amount of energy in a point in space.
Light is famously both a wave and a particle. As a wave, it exhibits interference and diffraction, moving through space as oscillating electromagnetic fields. As a particle (the photon), it interacts with matter in discrete packets of energy. This duality is not just a characteristic of light itself, but a fundamental property of the fields that occupy all of space. Light and Vacuum: The Wave Particle Nature of t...
These fluctuations manifest as "virtual particles," including virtual photons, that pop in and out of existence. Even when no physical light source is present, the underlying electromagnetic field exists in its lowest energy state, known as the . Evidence of the "Active" Vacuum In the quantum realm, the vacuum is never truly empty