A Conceptual Breakthrough in Our Understanding of Fundamental Nature of Matter and Energy!! A lot of questions have bothered science for a long time! What is a photon? Why does light behave both like a particle and a wave? How does light transform into matter? What is gravity? What is Big Bang and what came before it? The list is endless ... Riding on a Ray of Light describes a working model, called the Negentropic Model, which describes the fundamental nature of matter and energy. The negentropic model, formulated as a single theoretical principle based on the current scientific concepts, describes the precise structure of photon along with an explicit mechanism of generation of a light. It also describes the precise nature of matter and its formation in nature along with the intriguing nature of gravity. Alongside, this model explains the underlying meaning of some of the weirdest quantum phenomena such as wave-particle duality. In addition, by proposing the concept of 'dark protons', negentropic model allows us to delineate the precise nature of dark matter and dark energy, and this knowledge lets us peep into the depths of black holes to understand their true nature. Basing on these findings, the concept of Big Bang is revised and a brand-new concept of Differential Big Bang proposed! Riding on a Ray of Light presents the most comprehensive model in fundamental physics proposed so for, answering many of the hitherto unanswered questions in particle physics and cosmology, which really helps us to work towards a Theory of Everything !