Light follows rules. Reflection is the “bounce” that lets us see mirrors, shine, and images.
Reflection is what happens when light hits a surface and changes direction without passing through it. This lesson focuses on the core rule of reflection: the incoming and outgoing angles are equal, measured from the normal.
You’ll use the “ray model” of light to explain how images form in mirrors and why a smooth surface makes a clear image while a rough surface scatters light and blurs what you see.
Reflection is the foundation of mirrors, periscopes, cameras, and many optical devices. Once you can track rays correctly, you can predict what an observer will see — and why.
Inside: detailed explanations, graphical relationships, mathematical reasoning, and guided practice.