prism
🇺🇸
/ˈprɪzəm/
🇬🇧
/ˈprɪzəm/
A prism is a geometric shape with two ends that are the same and flat, and the sides are parallelograms.
The artist used a prism to study how light behaves when it passes through different shapes.
A prism can also be a clear piece of glass or plastic that splits light into different colors, like a rainbow.
When sunlight passed through the prism, it created a beautiful spectrum of colors on the wall.