Life mask of Abraham Lincoln, cast in copper, measuring slow time. The top of the mask rotates as an hour hand; the camera rotates around the head every minute; the copper oxidizes as the day progresses, resetting at midnight. Scan data courtesy Smithsonian Institute.
Car interior, police chase on a dark road, measuring fast time. The rearview ornament rotates clockwise every hour, the windshield compass rotates clockwise from North to North every 24 hours, car changes lanes every 30 seconds.