CHAPTER 7
The visual phase is one of the most persuasive in wine, leading to inquiries such as: Why does wine have colour? What is colour anyway? Is it possible to know which compounds of wine are responsible for its colour? Once these questions have been answered, we turn our attention to much more specific questions such as, for example, why wine changes its colour as it ages. We also investigate if wine colour can provide any further information. An understanding of what colour is also involves knowledge of the anatomy and functioning of the eye, as well as an appreciation of how light sensations are generated and how they become transformed into perception when they reach the visual cortex.
