Punched paper tape and camera: what they have in common

1. Step 1. Punched paper tape — is part of — Bouchon’s loom. A paper tape sets which threads are raised.
2. Step 2. Bouchon’s loom — is made of — Paper. The program is a perforated paper tape.
3. Step 3. Paper — is material for — Photometer. A photometer compares the illumination of paper screens.
4. Step 4. Photometer — includes — Exposure meter. A photometer.
5. Step 5. Exposure meter — is part of — Camera. A built-in light meter.

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