Mammograph and petri dish: what they have in common

1. Step 1. Mammograph — is made of — Tungsten. The tube anode is molybdenum or tungsten.
2. Step 2. Tungsten — is material for — Plasma cutting. The electrode is tungsten or hafnium.
3. Step 3. Plasma cutting — has part — Compressor. Supplying the plasma gas.
4. Step 4. Compressor — is part of — Sewage treatment plant. Blowers supply oxygen to the microbes.
5. Step 5. Sewage treatment plant — uses — Culture medium (agar). Waste water is cleaned by activated sludge — bacteria.
6. Step 6. Culture medium (agar) — uses — Petri dish. Agar in dishes.

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