Many of us have seen solar power plants of this type, and making primitive versions of these mirror dishes was the goal for some of us, for example this case...
Some of this stuff would be very easy to copy or modify.
I think these types of solar projects are something an older child could do, at least with a little adult supervision to make sure that don't blind or burn themselves
I think these types of solar projects are something an older child could do, at least with a little adult supervision to make sure that don't blind or burn themselves