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Infographic on measuring water quality with light

January 2024 (approx.)

Detailed Description

(A) Visible and ultraviolet light are forms of energy. (B) Sensors can take a variety of forms. Many are cylinders protected by a plastic or metal covering. Hiding inside are the energy sources, detectors, and computers for logging (storing) data.

Figure 2 in Underwater Flashlights: What Light Can Tell Us About Water Quality


Public Domain.