A civil servant named Su Song built the first mechanical clock between A.D 1088
and 1092. It could tell the time of day and also track the constellations so that
accurate horoscopes could be determined.
Here is an interesting link to a lecture on this invention by John H. Lienhard of the University of Houston. It is one in a series of lectures made available online by the College of Engineering, "about the machines that make our civilization run, and the people whose ingenuity created them."
Here is an interesting link to a lecture on this invention by John H. Lienhard of the University of Houston. It is one in a series of lectures made available online by the College of Engineering, "about the machines that make our civilization run, and the people whose ingenuity created them."
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