What is between us and a clear view?
Fog is a population of droplets, together with the aerosol particles and water vapor around them. Water mass and light attenuation weight that population differently. A successful visibility experiment measures the optical endpoint directly, while the size distribution helps explain the change.
Questions worth measuring
- Which wet sizes contribute most to attenuation?
- Does a change persist after temperature, humidity and inlet conditions are accounted for?
- Is the measurement representative of the volume people need to see through?
The records below are a starting point for those questions. Read the original methods and results before applying a finding outside the tested setting.