xplain whether sunglass lenses are transparent, translucent or opaque, and why they need to be this way.

Sunglass lenses are typically categorized as translucent. This is because they allow some light to pass through, but not all. They are designed this way to protect our eyes from harmful UV rays and intense light that could cause damage.

Here's a step-by-step explanation:

1. Transparency, translucency, and opacity are terms used to describe the amount of light that can pass through a material. Transparent materials allow all light to pass through, opaque materials allow no light to pass through, and translucent materials allow some light to pass through.

2. Sunglass lenses are not transparent because they do not allow all light to pass through. If they were transparent, they wouldn't serve their purpose of protecting our eyes from bright light and harmful UV rays.

3. Sunglass lenses are also not opaque because they do allow some light to pass through. If they were opaque, we wouldn't be able to see through them at all.

4. Therefore, sunglass lenses are best described as translucent. They allow some light to pass through, but they also block out a significant amount of light to protect our eyes.

5. The reason they need to be this way is to balance visibility and protection. We need to be able to see through our sunglasses to go about our daily activities, but we also need them to block out harmful UV rays and intense light that could damage our eyes.