Textbook Sleep #16: Photography

Welcome to Textbook Sleep, the Maximum-Strength Sleep Aid, where I read extremely boring public-domain textbooks to help people fall asleep. We continue with General Science by Bertha M. Clark, Ph.D. Specifically, we’ll hear what Dr. Clark has to say about photography, or I will anyway—you’ll be lulled to sleep, hearing me speak of movable convex lenses, sodium thiosulphite, and sensitive plates left to dry in dark rooms. Today we all carry a camera in our pockets, but in 1912, when this textbook was written, a photograph was far more complicated to take. Which was great in that no one could take a selfie, let alone post it on so-called social media. Still, it’s all terribly tedious, which is just perfect for our purposes. Smile. And sleep.This recording will end quietly. Get full access to Pieces of Jim at jimnolan1.substack.com/subscribe