Cone-shaped paper filter und electrical telegraph: was sie gemeinsam haben

1. Schritt 1. Cone-shaped paper filter — ist Teil von — Kaffeefilter. Pleats shaped like a funnel.
2. Schritt 2. Kaffeefilter — funktioniert wie — Water filter. Filtering a liquid through a porous medium.
3. Schritt 3. Water filter — ist hergestellt aus — Silica (sand). Slow filters are layers of sand and gravel.
4. Schritt 4. Silica (sand) — ist Material für — Internet. The backbones are silica optical fibre.
5. Schritt 5. Internet — nutzt — Packet switching. Data is sent in packets.
6. Schritt 6. Packet switching — funktioniert wie — Electrical telegraph. An analogy: telegraph messages were passed from station to station with intermediate storage — a “store and forward” principle similar to packet transmission.

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