Tower clock (Jam Gadang )is a symbol of a typical hour and Bukittinggi West Sumatera. In the Dutch colonial period, this clock ornament is round and over it stands a statue of a rooster.
The mechanism that controls the internal clock, 24 hours, the people and other life forms, including algae, was identified by scientists.
The history of time measurement goes back many centuries before the invention of watches and clocks. There is little doubt that the rising and setting of the sun was man’s first means for the division of time. He also realized very early that the shadow cast by an upright object such as a stick, a stone or tree changed as the sun seemed to move across the sky.
For as far back as I can remember, I have always had a knack for not adding times corectly, or at least struggling with it. That is, until I leaned this interesting little trick. If the thought of adding 15 hours and 43 minutes to three hours and 56 minutes frightens you, then this is written for you personally.