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For instance, knowing that Earth's average solar day is almost exactly 24 hours, an analemma can be traced by plotting the position of the Sun as viewed from a fixed position on Earth at the same time every day for an entire year. The resulting curve resembles a figure of eight. This curve is commonly printed on globes.
Star Axis is just one of Ross's explorations of the physical relationship between light and form. In another set of projects, he makes solar burns – marks made by sunlight burned through glass onto wood. The goal is to chart the movement of the sun in a particular location, at a particular time of day.
Originally posted by stereologist
Out of curiosity that chart you posted many posts back, what is it? It can't be the trace of a shadow from a pole.