Pendulum photographs are shown in Figures 75-77. They were taken by vibrating around a flashlight hung from the ceiling, and its traces were taken by a camera set up under it in a darkroom. By changing the ways of hanging a string and throwing a pendulum, a variety of patterns can be created.
 
 

75   76   77   Figure 75-77: Compositions of light traces of a moving pendulum (Figure 76: type I,                              photographed using one pendulum, a long exposure by Naomi Asakura).

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