A 50-cm Fog Disdrometer.
Abstract
A description is given of an ultra-sensitive disdrometer to be used in the analysis of fogs and aerosols. This device operates on a wavelength of 0.9 microns over a 50-cm path and utilizes the principles of optical transmission and scattering of light by small particles. It was originally developed to analyze aerosols composed of particles as small as 1 micron and as large as 14 microns in diameter. The primary region of operation is in the 97.0 to 99.9 per cent transmission coefficient range with an ascribed sensitivity of 4 parts in 100,000. The device is capable of determining the average size and average density of particles per cubic centimeter of light to moderate fogs. Other suggested uses of this disdrometer include the investigation of smokes, hazes, and air pollution. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1970
- Accession Number
- AD0727184
Entities
People
- Harlan L. Faller
Organizations
- South Dakota School of Mines and Technology