Giant Mirrors on Giant Mountains
Two towns that live in the shadow of nearby mountains during winter months have erected mirrors to steer sunlight down into the town center. The first to do this was a village in Italy named Viganella. The second was the Norwegian town of Rjukan. Both projects are described in this article.
The Norwegian mountaintop mirrors dilute sunlight by a factor of about ten, but even this level of light, projected onto the town square, evokes celebrations.
The rest of us—who don’t live in the shadow of a mountain—find it much easier to get some sunlight. SunSprite can remind us to go outside or to move near a south-facing window, whenever we have not recently found bright light. Even better, SunSprite was created specifically as a tool to track which light levels are beneficial to us, and it will tell us when we have gotten enough for the day.
These two sun-starved towns had to erect big mirrors to cheer themselves up. The rest of us can do the job a lot more easily. We can just clip on SunSprite and reach—like the geranium on my window sill—toward the light.