1) When place clean water above the panel , It’ll produce less electricity than usual , because the light can’t fall onto the panel enough.
2) When make some wave in clean water , it’ll produce less electricity than number 1) because
the light will fall onto the panel less.
3) When put some dirt into the water , it’ll produce the least electricity because the light nearly
can’t fall onto the panel.
4) When make some wave in dirty water , it’ll produce more electricity than number 3)
because mud and dirt under the water will spread out.