I love heliostats. Like pneumatic tubes, there is something old and new about them at the same time and they hint of mystery. We are fools for not using the fr

I love heliostats. Like pneumatic tubes, there is something old and new about them at the same time and they hint of mystery. We are fools for not using the free daylight indoors when it rains down on us from the heavens. It is better for your health too. If anybody has a good book recommendation on heliostats I would be delighted to have it.