新颖性：The apparatus has a light sensor for sensing light emitted from a light source (36). A data logger (41) is operably connected to the light sensor, and records intensity of the light sensed by the light sensor over a period of time. A gap (39) is provided between the light source and the light sensor, where algal growth is taken in the gap when the sensor is partially submerged i ........
(请QQ直接登录后查看全文)