Is it possible to tell time, by having a window sectioned into different pieces of colored glass, and as the sun travels, the light passes through the different sections so someone could accurately tell time based on what portion of colored glass was illuminated/what color a room was that the light was passing in to?
like i figure you could do it with enough observation and math to have 12 different windows of different colored glass arranged in a circle (?), and as the sun travels it hits the different windows?