Solved cryptogram
Water vapor will not form a cloud droplet on its own. It needs a speck of dust or salt.
Earth Science Facts, sourced to NASA.
Or go to the puzzle’s own page first.
What it means
Pure air can be pushed well past saturation without a single drop appearing, because the first tiny droplet has so much curvature that it evaporates faster than it grows. A solid particle gives the water a surface to condense onto and skips that problem. Dust, sea salt, pollen, smoke and pollution all serve. Cloud seeding is the same idea done deliberately, and it explains why the air over a city can hold more cloud than the air over an ocean.
The claim comes from NASA.
- SourceNASA
- CollectionEarth Science Facts
- Difficultymedium
- Length67 letters, 18 unique
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