Cat's eyes

The transcript describes how Percy was inspired by a cat's eyes reflecting light to invent a road safety device called cat's eyes. These devices use glass balls with a reflective substance to help drivers see the road at night. Percy also developed a self-cleaning mechanism using rainwater to keep the glass clean. Over 80 years later, cat's eyes are used worldwide, contributing significantly to road safety alongside other reflectors.

What inspired Percy to invent his own version of a cat's eye?

Describe how Percy's cat's eyes work to help drivers.

What mechanism did Percy invent to keep the glass of the cat's eyes clean?

How do the cat's eyes get cleaned when a car passes over them?

In what ways do cat's eyes contribute to road safety?