Hello! People often think of solar panels as something full of complicated cutting-edge technology. Is this the case?
Oh, no, at least it doesn't have to be. Highly efficient collectors can easily be built with nothing more complicated than window screen and an insulated wooden box!
One of the really exciting aspects of solar heating technology is that it is both elegantly simple, something anyone who can pick up a hand saw and drill can enjoy, while also being ripe for experimentation and technological advancement by the backyard hobbyist / experimenter / inventor.