Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye. The measurement of turbidity is a key test of both wat
Turbid creek water caused by heavy rains
Turbidimeters used at a water purification plant to measure turbidity (in NTU) of raw water and clear water after filtration.
A nephelometer or aerosol photometer is an instrument for measuring the concentration of suspended particulates in a liquid or gas colloid. A nephelometer measures suspended particulates by employing
Turbidity
…protect juvenile fish from predators. For most mangroves along the eastern coast of Australia, in particular Moreton Bay, turbidity levels as high as 600 Nephelometric Turbidity Units (NTU) are needed for proper ecosystem health…
Wilma Theatre 2013 Particle Falls 004
A nephelometer at the Kosan, Cheju Island, South Korea NOAA facility
Radiation balance (thickness of Earth's atmosphere is greatly exaggerated).
A nephelometer installation at Acadia National Park