Does Light Disappear? — Photons, Energy, and the Final Question of the Universe
Does Light Disappear? — Photons, Energy, and the Final Question of the Universe Prologue — The Beginning of All Questions We encounter light every day. The morning sun, the starlight at night, the familiar scenery illuminated under a lamp. But when we closely examine the essence of light— the photon —we find ourselves quickly swept into cosmic confusion. Does light truly exist? Can light disappear? Where do the stars' emitted energies ultimately go? And how do all these phenomena relate to the ultimate fate of our universe? This article follows that thread— a small intellectual journey through one of the biggest questions we can ask. Does light disappear, or does it continue to exist somewhere? 1. Is Light Real? — Energy Without Mass Light, or photon , is one of the most fundamental components of our universe. A photon is both a wave and a particle that carries energy, yet it has zero rest mass . This does not mean it is nothing. On the contrary: Photons: Carr...