Our work explores a fascinating experiment in physics and science, the Double-Slit Experiment. We cover the mystery of this experiment, representing the wave and particle nature of photons, electrons, and quantum elements. We recount the history of quantum physics, an unknown field for most people due to its detachment from the world we see. Finally, we explore the capability of the human eye to detect light in its quantum state, closing the gap between us and quantum physics.

Wave-particle duality is concerned with the dual nature of light. Specifically, the particle and wave nature of light. The particle nature of light is the little packages of photons that make up light, and the wave nature of light is the wave pattern that light follows. An example of a way that light behaves like a particle is that it can’t go through walls like sound can. Light also can behave like a wave when we observe the interference pattern of light. This dual nature of light is important because nothing else known in the universe behaves and can be described in the way that light is. Getting to the consensus that light is both a particle and a wave has been a heated debate for decades, and to this day imagining what light truly is, is not humanly possible due to our lack of experience with a wave-particle nature. This thesis explores the history of the debates on the nature of light, and how the modern view was accomplished.