Touch layer (capacitive) and newcomen engine: what they have in common

1. Step 1. Touch layer (capacitive) — is part of — Display. Under the glass is a touch layer that registers touches.
2. Step 2. Display — is part of — Monitor. The heart of a monitor is the display: an LCD panel, once a picture tube.
3. Step 3. Monitor — has part — Cathode-ray tube. The first monitors were CRTs.
4. Step 4. Cathode-ray tube — uses — Vacuum. Inside is a vacuum.
5. Step 5. Vacuum — is used in — Newcomen engine. Condensing the steam creates a vacuum under the piston.

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