Describe how a sunshine recorder works?

A sunshine recorder is an instrument used to measure the amount of sunshine received at a specific location over a period of time. It typically consists of a glass sphere or a transparent dome that focuses sunlight onto a strip of paper or a recording surface. As the sun moves across the sky, the focused sunlight burns a path on the paper, creating a trace that indicates the hours of sunshine. By analyzing the length and position of the burn marks, one can determine the duration and intensity of sunlight received.