Maser resonant cavity and greenhouse: what they have in common

1. Step 1. Maser resonant cavity — is part of — Maser. A cavity tuned to the transition frequency.
2. Step 2. Maser — is made of — Ammonia. The first maser ran on ammonia.
3. Step 3. Ammonia — is material for — Mineral fertilizer. Nitrogen fertilizers.
4. Step 4. Mineral fertilizer — is used in — Hydroponics. A nutrient solution.
5. Step 5. Hydroponics — uses — Greenhouse. Usually in greenhouses.

Open Evothings