Abbreviation for Optical Backscattering Meter, an instrument built by Downing Associates and used to obtain in-situ measurements of light scattering in sea water This measurement also provides a crude measure of the particle abundance in the water The instrument works by projecting a beam of light into the water and measuring the amount of light scattered back to a detector place next to the source The LSS is a similar instrument
Organizational Breakdown Structure Structure chart normally shown as a tree diagram showing the management structure of an organisation