CHAPTER 1 : Understanding Reality — From Physical to Virtual
CHAPTER 1 Understanding Reality — From Physical to Virtual** 1.1 Introduction to the Nature of Reality Human beings perceive the world not as it truly is, but as our senses interpret it. What we call “reality” is constructed by our brain using signals from our eyes, ears, skin, and other sensory systems. These perceptions allow us to interact with the world—but they also have limitations. We see only certain wavelengths of light, hear only specific frequencies, and can process only a fraction of the sensory data around us. This chapter explores how Extended Reality (XR) builds upon the boundaries of human perception by altering, supplementing, or simulating sensory input. Before we understand XR technologies, we must understand what “reality” means in the human context. 1.2 Human Perception: How We Sense Reality 1.2.1 Vision: The Dominant Sense More than 70% of human sensory input is visual. Our eyes collect light, convert it into electrical signals, and send it to...