Compression paddle and heron’s aeolipile: 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 — is made of — Tungsten. The tube anode is molybdenum or tungsten.
3. Step 3. Tungsten — is material for — Ion thruster. The cathodes are tungsten.
4. Step 4. Ion thruster — uses — Reaction force. Jet thrust.
5. Step 5. Reaction force — is used in — Heron’s aeolipile. Jets of steam spin the ball by reaction force.

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