Shadows are like cookie cutters for light. Imagine the sun is a giant lamp shining down on you, when it shines straight, your shadow stretches out and becomes long. But if something blocks that light in a round way, like a ball or a moon, your shadow always looks round because it’s just copying the shape of the thing blocking the light. It's like drawing with a circle stamp every time.
Examples
- A round lamp casts a round shadow on the floor like a cookie cutter stamping the ground.
- If you stand near a round window, your shadow gets circular, it's just copying the shape of the light.
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See also
- Why Is The Number Pi So Special?
- Why Do Shapes Tile the Plane So Differently?
- What is Φ (phi)?
- What Is The Most Efficient Way To Stack Spheres?
- Why Does π Show Up Everywhere?