A photographer and appearances
Our photographer draws our attention to how differently the same objects appear in different light. It’s a lesson easily generalized.
Our photographer notices how a new technology forces our bodies into new positions.
Our astronomer spent a few years in England, where he learned something of the arcane art of ringing church bells. In the belfries of that country are wonderful examples of essentially Medieval technology that also demonstrate advanced mathematical and physical ideas.
Our astronomer steps out of his area of expertise to comment on biology.