White wall photographic reflection

At night, shine a flashlight vertically on the flat mirror and white wall hanging on the white wall, and you will see that the white wall is bright.

Because the mirror surface is very smooth, the light incident vertically on the mirror surface is reflected vertically, and there is little light in other directions. Seen from the side, almost no light enters the eyes, so the flat mirror looks darker. However, the surface of the white wall is rough. After the light incident on the white wall is diffused, the reflected light is emitted in all directions, so the white wall is brighter when viewed from the side.

I hope I can help you. You can ask questions ~ ~ ~

I wish you progress in your studies and go up a storey still higher! (*^__^*)