Abstract
The purposes of this research are to make a crown-shaped escapement formula stick temp clock, which is an early mechanical clock, examines its characteristics and to use it as teaching materials for further study and exploration. A crown-shaped escapement formula stick temp clock was developed as an old Japanese style clock in the Edo era. It has interesting mechanisms. This kind of clock can be made easily and cost-effectively using a plastic bottle (pet bottle), and with this, the clock's mechanisms can be easily understood. The results shows that the square of the natural period of the pendulum (stick temp) is proportional to the moment of inertia and is inversely proportional to the size of the torque which turns a crown-shaped cogwheel. This is proved through experiments. Therefore, it is concluded that the speed of the clock can be controlled by changing the weight of the pendulum and the weight of the torque. The clock, which can be made easily and whose characteristics can be examined, seems to arouse students' interest, and is thus suited for (teaching) materials which further their studies.
