What is transmissiometer?

A transmissiometer is a device used to measure the transmittance of light or other electromagnetic radiation through a medium such as air, water, or smoke. It is primarily used in atmospheric research to study visibility and aerosol concentrations. The device consists of a light source, photodetector, and sample chamber. The light source emits a beam of light that passes through the sample chamber and is detected by the photodetector. The degree of attenuation of the light as it passes through the sample chamber is used to calculate the transmittance of the medium being measured. The transmissiometer can be used to study weather, climate, air pollution, and other environmental factors.