Lightgrams are an example of slow speed photography in which the shutter is kept open for a long time in a dark room to capture dim lights. These were created by hanging an LED from a thread from the ceiling to a height of about 4 ft from floor, while keeping the camera facing upwards on the floor underneath the LED. The LED is swung in erratic paths, and thanks to gravity and simple harmonic motion, these patterns are created. The different colors were caught by placing a colored transparent sheet over the lens, and changing colors intermittently.