Sensor Device in Yokohama-kita Tunnel
Same kind of device is shown in “Objects on Yokohama-kita Tunnel 2.”
After some googling, I concluded that it is a “visibility meter.” The system consists of two similar boxes. One emits light, and the other receives it. It can measure air pollution. The long visor is required so that the device would not catch dust.
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Uploaded on April 26, 2019
Taken on March 11, 2017
Sensor Device in Yokohama-kita Tunnel
Same kind of device is shown in “Objects on Yokohama-kita Tunnel 2.”
After some googling, I concluded that it is a “visibility meter.” The system consists of two similar boxes. One emits light, and the other receives it. It can measure air pollution. The long visor is required so that the device would not catch dust.
108
views
0
faves
0
comments
Uploaded on April 26, 2019
Taken on March 11, 2017