What percentage of light does green glass block?

Green glass primarily filters out a significant amount of light, with studies indicating that it blocks approximately 20% of the visible light spectrum. This characteristic of green glass makes it particularly useful in various applications, such as in the production of wine bottles, where the color helps protect the contents from UV light while still allowing for some visibility. The specific percentage of light blocked can vary depending on the thickness and composition of the glass, but 20% is a widely acknowledged figure in the industry.

Understanding the properties of different glass colors is essential for anyone involved in beverage service, as it influences both the appearance of the beverage and the preservation of its quality. In contrast, other options represent either higher or lower percentages that do not accurately reflect the performance of green glass.