Light/Heat/Time

I designed this timepiece to measure the intensity of light and graph that value over time using heat to mark thermal paper. My inspiration came scientific instruments like seismographs. I chose to use sunlight because it is our fundamental measure of time passing. Heat is related to sunlight, but heat is also used to measure the passage of time of our expanding universe.

This pseudo scientific device plays with these themes.

The device is 3d printed plastic in green and black. There is a roll of white paper that is marked with a black seismographic like image.
This is an animated gif of the Light Heat Time device. An servo motor is cranking an arm back and forth moving the heating element.