Transmissometer

A transmissometer is an instrument used to measure the transmission of light through a medium, often employed in various fields such as meteorology, environmental monitoring, and telecommunications. It quantifies how much light is able to pass through a medium, which can be air, water, or other substances, and is particularly useful for assessing visibility conditions. In meteorology, for instance, transmissometers are commonly used to measure atmospheric visibility, which can be affected by factors like fog, rain, dust, and pollution.