Brick studs and camera: what they have in common

1. Step 1. Brick studs — is part of — LEGO bricks. Studs on top fit into the tubes of the brick below.
2. Step 2. LEGO bricks — uses — Elasticity. The grip relies on the elastic deformation of the plastic.
3. Step 3. Elasticity — is used in — Spring. A spring works through the elasticity of its material.
4. Step 4. Spring — is part of — Shutter. A spring mechanism.
5. Step 5. Shutter — is part of — Camera. A shutter.

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