Compression paddle and telescope: what they have in common

1. Step 1. Compression paddle — is part of — Mammograph. It spreads the cloth in a thin layer.
2. Step 2. Mammograph — has part — Image sensor. A flat-panel detector.
3. Step 3. Image sensor — is part of — Smartphone camera. A CMOS sensor turns light into a digital image.
4. Step 4. Smartphone camera — is part of — AR glasses. Cameras.
5. Step 5. AR glasses — evolved from — Glasses. Glasses with a display.
6. Step 6. Glasses — evolved into — Telescope. The first telescopes were assembled by spectacle makers.

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