Press platen e camera: o que têm em comum

1. Passo 1. Press platen — faz parte de — Screw press. It transfers the force to the material.
2. Passo 2. Screw press — faz parte de — Gutenberg printing press. Gutenberg adapted the screw press known from pressing grapes.
3. Passo 3. Gutenberg printing press — utiliza — Paper. The impression is made on paper.
4. Passo 4. Paper — é material para — Photometer. A photometer compares the illumination of paper screens.
5. Passo 5. Photometer — inclui — Exposure meter. A photometer.
6. Passo 6. Exposure meter — faz parte de — Camera. A built-in light meter.

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