Kite and vacuum pump: what they have in common

1. Step 1. Kite — is made of — Silk. Chinese kites were silk.
2. Step 2. Silk — works like — Nylon. Nylon was created as a substitute for silk.
3. Step 3. Nylon — is material for — Spacesuit. The outer layer is nylon and other synthetic fabrics.
4. Step 4. Spacesuit — evolved from — Diving suit. A sealed suit with an air supply.
5. Step 5. Diving suit — has part — Piston pump. Air was pumped from the surface.
6. Step 6. Piston pump — evolved into — Vacuum pump. Guericke adapted the piston pump to pump out air.

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