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If memory serves me well, water absorbs that wavelength, so it would basically function sort of like a microwave oven, but with such a much lower energy level that you can basically ignore it.

How will LIDAR work under the rain or snow then?

The same way regular vision works under snow. Snowflakes are opaque to visible light too, so it'd work the same way human eyesight works for drivers currently.

so maybe we don't need Lidar, because the cameras can see like the human eye in the snow, too. Depth can be given by doing like insects and adding many triangulation points.

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