点点滴滴——时钟水在古代,我们祖先白天用日晷测时,所谓日晷,就是在阳光中立杆,观察它在水平面上影子位置的变化来记时.但是到了晚上或阴天怎么办呢?根据滴水等时性原理,我们祖先研制出铜壶滴漏计时器,这就是水钟,又叫滴漏或刻漏.相传在黄帝时期就有了滴漏,《初学记梁刻漏 Bit by bit – clock water in ancient times, when our ancestors used daytime measurements, the so-called sundial was to set the pole in the sun and observe the changes in the shadow position on the horizontal plane. But what should be done at night or on cloudy days? According to the principle of dripping water isochronism, our ancestors developed a copper pot dripping timer, which is called the water clock, also known as dripping or leaking. According to legend, there was a dripping leak in the Yellow Emperor period.