Opacity

Opacity refers to how much a material or object prevents light from passing through it. If something is highly opaque, it blocks most or all light, making it impossible to see through. Conversely, transparent objects allow light to pass through easily, making objects behind them clearly visible. Opacity is important in various contexts, such as design, photography, and material science, to control visibility, privacy, or protection from light. It is usually measured in terms of transparency or translucency, with higher opacity indicating less transparency.