Solar in Thirty Second Segments
I made these thirty second public service announcements for public access TV around 1991. They served as intro and outro to the videos of the Boston Area Solar Energy Association lectures I shot and cablecast on Cambridge Community TV for a few years. The tape archive of all those lectures needs to be digitized.
The modern history of solar is hidden in plain sight but the best book I know on the earlier 2500 years is still A Golden Thread by John Perlin and Ken Butti.
I still don't understand the relationship between a calorie and a watt. I understand the btu though. Sorry, physicists.
These two trick questions were collaborations with the polymathic Ed Hill.